Ffmpeg fix timestamps

Ffmpeg fix timestamps. [mp4 @ 0x556a367c4200] Non-monotonous DTS in output stream Fix your code to set the timestamps properly [matroska @ 000001c974ade080] Can't write packet with unknown timestamp av_interleaved_write_frame(): Invalid argument For clarity, I'm starting with an MKV ripped from a DVD, encoding it x265 (please don't start about x265 at SD - I know what I want), and then remuxing with the HEVC stream in place of the According to the ffmpeg documentation-vsync parameter. txt -c copy output. command line: So I tried fixing it using -fflags +genpts: ffmpeg -fflags +genpts -i 'video. mp4 (I'm doing this on windows but normally would be on linux I try to use_wallclock_as_timestamps in the video. In this network, I want to transfer video between two hosts. Playing it, it clearly shows me that it FFmpeg incorrecly alters timestamps, which results in subtitles not displayed when viewing output file: [sost#0:6/copy @ 0x127e150b0] Non-monotonic DTS; previous: 1268750, current: 150; changing to 1268750. Most videos from v. mp4 -codec copy out1. Non-monotonous DTS in output stream 0:1; previous: 3277744, current: 3276712; changing to 3277745. 264 / MP4. mp4 However, the output does not start at 09 use case you are trying to fix: the files you are trying to concat, with their format, their timestamps at the beginning, at the end and at discontinuities, the positions where the application jumps, the timestamps that are returned by lavf at both levels. mpeg This, however, creates a file somewhat smaller, but if I run the same command on the output again, I would expect that it creates the same file, but the following command Modern containers govern the time component of presentation of video (and audio) frames using timestamps, rather than framerate. I'm using: Kurento Media Server 6. The output seeking is very slow (it needs to decode the whole video until the timestamp of your -ss) so you want to avoid it if What's the best way to fix incorrect timestamps on a network camera using ffmpeg? Running the camera in h264 mode with a 1fps correctly produces duration=1. It claims to have made edits to the files, but TDARR still chokes on the timestamp and errors out. There's something funky about the H. com Sun Mar 19 20:17:45 EET 2023. 7 -i input. mp4 Many thanks! Edit: I am adding the part of remuxer where each frame from the input stream is read and timestamps are added. mkv -c copy timing-1m49s. mp4 -f hls -hls_time 3 -hls_segment_filename seg%02d. mp4 -c copy -bsf h264_mp4toannexb temp1. com are unsigned, and have 32-bit roll over semantics. Otherwise the -to value ends up being a duration instead of the end time from the original video. mp4 -movflags +frag_keyframe+separate_moof+omit_tfhd_offset+empty_moov output. g. mp4 It does give me a fragmented mp4 but the timestamps of the frames seem to be shifted by 0. This may result in incorrect timestamps in the output file FFmpeg - Concatenate TS files and fix timestamp issues. ts -c:v libx264 -crf 24 -c:a libfaac out. I haven't been able to find a solution. Here is something to try: ffmpeg -i input. /USB1_Test_vga. ffmpeg -i "concat:file1. Stream #0:1(eng): Audio: wmav2 (a[1][0][0] / 0x0161), Basically, I want to force change the frame rate of a file that is not encoded using H. mp3 -i video. mp4 Set CRF to anything between 19 and 25, or even more. Frames are passed through with their timestamp or dropped so as to prevent 2 frames from having the same timestamp. andres. xxx format. VLC doesn't seem to report the correct timestamps of some aac files. mkv Edit: Which ffmpeg command should I use to extract each frame number associated with its timestamp (time in ms from the starting of the video) ? Expected result : frame, ts 1, 34 2, 67 3, 101 4, 123 Q2. 0 -i input. It's important to me to know the exact start and end timestamp that ffmpeg use to generate the output, because I use this info to adjust subtitle timing Fix your code to set the timestamps properly and several thousand times [mp4 @ 0x560f9a37e5c0] pts has no value So I tried fixing it using -fflags +genpts: ffmpeg -fflags +genpts -i 'video. 264 video codec, and AAC audio codec): Instead of using -ss and -t, we better use Segment Muxer. mp4 -c:v libx265 -x265-params crf=25 -c:a copy output1. 624278) Let e be the desired end timestamp (here 87259. The issue is that it fails on files with covers. -> Since encoded video does plays very fast, so I have added temporary fix to multiply stream timebase by some factor just before av_packet_rescale_ts (in my case it is 5 -> 5*st->time_base. [mp4 @ VLC should offer you to fix a broken AVI file's index when you open the file. The input timestamps from ALSA are 64-bit whereas MPEG-TS stores timestamps as 33-bit (there are extra bits available for greater precision but not range). wmv Note that -t is an output option and always needs to be specified after-i. mp4 -i input_1. mkv to . Manually Correcting Time-Shift If you have a constantly shifted sound/video track that the previous fix doesn’t work with, but you know the time shift that needs to be corrected, then you can easily fix it with one of the following two commands: 3. Then I try to fix that with ffmpeg -timecode, and now the start TC is correct, but Resolve sees only 1257 frames! I checked, and it's the last frame that's missing. Fix your code to set the timestamps properly ffmpeg. 264 I can do the following: # Assume I want to take a 30FPS file and make it Try to examine the timestamps of the following generated video file: ffmpeg -y -f lavfi -i testsrc=size=384x216:rate=30:duration=10 -c:v libx264 -pix_fmt yuv420p test. The first frame has a timestamp of 0. Thus, the durations in the concat file exampled in the answer are mostly ignored, and images are displayed 0. 332589 which represents a PTS of 1589813372332589 . h. command: ffprobe -v quiet -f lavfi -print_format json -i "movie=test. In Description. 264. Message ID: 20180503165021. mp4 This could be altered to copy the timestamps in batch by using This may result in incorrect timestamps in the output file. mkv ffmpeg -i my_video. wmv -c copy -t 10 output. Packets from an audio encoder for codecs such as MP3/AAC/Opus are interdependent on neighbouring packets. 11. I was hoping for the ffmpeg commands to fix that please. Using concat and encoding the video seems to work fine. How can I save an original timestamps with transcoding to HLS ? UPDATE: I tried this command and timestamps are saves fine: ffmpeg -i source. If I pick an arbitary date and time as 2022/2/28 at 12:02:03, calculate the number of seconds for the offset, in this instance 12 x 60 x 60 plus 2 x 60 plus 3 equals 43323. But I don't know how to fix it here is my ffmpeg command (transcode to 250k bps) ===== ffmpeg -y -i sample-03. > > As said before, setpts should generally be avoided and > this is even more true for settb. ts (same without -vsync) the A/V streams in the output file result desynched, and will result in the video being unplayable. exe? With default settings, the shell running gallery-dl (and ytdl) needs to be able to see and run ffmpeg. For compatibility reasons old values can be specified as numbers. Please help me to When I use ffmpeg to convert m3u8 to mp4, I get some warning, ffmpeg -i xx. FFmpeg's setpts filter is a powerful tool for manipulating timestamps. 1 I am trying to use ffmpeg to copy files with all streams intact to fix various issues with files. elgorro opened this issue Aug 30, 2022 · 7 comments Labels. This may result in Stack Exchange Network. The formula you provided will generate PTS on AMF scale: 100th of nanoseconds. Thus If I copy the input stream with ffmpeg -i out. FFmpeg is a powerful, open-source multimedia framework that allows users to handle multimedia data in various formats. So, instead of recording a video as 25 fps, and thus implying that each frame should be drawn 0. vob file and ffmpeg hanged this time at an other point. Conclusion: Using FFmpeg's setpts filter, you can efficiently adjust video timestamps without the need for re-encoding. png. it are DASH, which means audio and video get downloaded separately and then get combined into a (working) MP4. Adts header allow you to dump AAC data directly to a file, call it foo. Try to examine the timestamps of the following generated video file: ffmpeg -y -f lavfi -i testsrc=size=384x216:rate=30:duration=10 -c:v libx264 -pix_fmt yuv420p test. Stack Exchange Network. It's 4 hours 35 minutes long, 4. Any ideas? I understand that ffmpeg seeks to the nearest Keyframe and that precise seeking to a timestamp is not possible unless re-encoding the video (I tried that but the output video losses quality!). [mp4 @ 061b8f00] Non-monotonous DTS in output stream 0:0; previous: 624626, current: 89759; changing to 624627 Hi - I’m using a Mac running yt-dlp, and I cannot figure out how to get ffmpeg “connected” to yt-dlp. Next message (by thread): [FFmpeg-user] How to dynamically drop frames as required to keep Fix your code to set the timestamps properly av_interleaved_write_frame(): Invalid argument. We can use yum or apt to install FFmpeg. sbv captions. Fix your code to set the timestamps properly [mp4 @ 00000211ca19f940] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. Your aac audio frames still have adts headers when provided to a unit of processing which is expecting raw aac. So, in your encoding run, the initial time is 1589813372. mp4 with ffmpeg, but it tells me 0x00 at pos 24426601834 (0x5aff05d6a) @EugenRieck No matter what timestamp I try, it spits out the exact same message. Also, why are you running gallery-dl in PS and FFmpeg in cmd. com wrote: > Fixes issues when a subtitle packet is received before PCR for the > program has been received, leading to wildly jumping timestamps > on the lavf client side as well as in the re-ordering logic. If you play the video in VLC, it should finish in 2:09:42. 2" output. mp4 -c:v h264_nvenc -preset fast -rc vbr -qmin 1 -qmax 1 previous: 45568, current: 34666; changing to 45569. mp4 the resulting file size is roughly a quarter of the original - ffmpeg just chops of the remaining video. Fix your code to set the timestamps properly [rtsp @ 0000016f3cc75280] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. Viewed 2k times Overall sync is maintained since output timestamps are assigned based on the output timestamp 'slot' closest to the source timestamp. Additionally, we can also use Snap to install the latest version of FFmpeg: $ sudo snap install ffmpeg. [mp4 @ 0000000000ddbfe0] Non-monotonous DTS in output stream 0:0 I know that I could fix this with re-encoding video during ffmpeg -ss 30 -i input. Some tips: If theres a video file that is partially downloaded, how can you use ffmpeg to copy it and cut out all the incomplete and/or corrupt frames. mp4 -c copy -map 0 -vf "setpts=PTS/1. detect ERROR : This is deprecated and will stop working in the future. FFmpeg Command Structure. I used the following command to cut a video: ffmpeg -i origin. DivFix++; AviFiXP (only runs on Windows) There's an extensive tutorial on repairing broken AVI files here: Repair broken or corrupt AVI files - AfterDawn: Guides. txt out. mp4 This command uses the same file for input twice, but using -itsoffset -0. I tried it with an other . [hls,applehttp @ 0000022945ff9fc0] Opening 'crypto:part1. The reason I am insisting on all this is that I fear the problem lies [mpegts @ 0x1fa76a0] Timestamps are unset in a packet for stream 0. Previous message (by thread): [FFmpeg-user] ffplay. I guess there's nothing I can do. It should eliminate the warning, but there's no guarantee your sync issues will be Fix your code to set the timestamps properly. ogg -map 0 -c copy output. 04s instead of 0s, as in the input video Unfortunately, I forgot to install ffmpeg before I used youtube-dl to download a livestream city council meeting. is there any other option for display video recorded time? The ffmpeg -timestamp option This can be done via two methods: using the setpts video filter (which requires re-encoding) or by erasing the timestamps by exporting the video to a raw bitstream format and If the argument consists of timestamps, ffmpeg will round the specified times to the nearest output timestamp as per the encoder time base and force a keyframe at the first frame Fix your code to set the timestamps properly. Fix your code to set Skip to content. This is deprecated and will stop working in the future To:"FFmpeg user questions"<ffmpeg-***@ffmpeg. ytdl does not "scan" already downloaded (and mux'd files) for errors It surely does scan already downloaded files for malformed AAC bitstream, probably checks mpeg headers or something. If it works, it is the superior of the two options. ttf:fontsize=36:fontcolor=yellow:text='%{pts\:gmtime\:1456007118}'" -preset ultrafast output. mp4 -FileCreateDate -FileModifyDate target. 2. mkv into mp4 using ffmpeg and then concating them but that gave same issue as well. ffmpeg Reduce frame rate. when i use 4b to push stream to my rtsp server。this question has happed. 0kbits/s video:4903kB audio:877kB subtitle:0kB other streams:0kB global It will have more bug fixes and features. Hi, I'm editing a serie of similar videos with VirtualDub and after finishing I export them with "External encoders", in my case the input videos are MP4, x264 and I chose to export them by maintaining format and encoder. My intention here is only to show the proper use of -debug_ts not to demonstrate any parsing techniques, all of which are necessarily much more complex than the trivial task of merely writing out the timestamps to a file. I am using ffmpeg version: ffmpeg I tried running ffmpeg -timecode '00:00:00:00' to see if setting the timecode to 0 would fix the start problem, but that too results in an output file that's apparently 30. com Mon Apr 5 17:17:40 EEST 2021. mkv -c copy video_fixed. but it doesn't work. 820733) Let s be the desired start timestamp (here 81953. It believe it is because the webcam is tagging the frames' timestamps slower than my computer's clock, so ffplay ends up delaying playback until it has to drop frames because of a full cache. ffmpeg -i $1 -codec copy -strict -2 $2 But on this particular file, I get this error, like, A LOT : Non-monotonous DTS in output stream 0:0; previous: 49189232, current: 49189232; changing to 49189233. You can also try rebuilding the container by doing a bitstream copy with FFmpeg: change duration=5 with yours for every audio (begin of second audio timestamp minus end of first audio timestamp). Fix your code to set the timestamps properly [segment @ 0x55968f393e80] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. mp4 - check if The link I suggested is for a fixed datetime. Some videos are MPEG-TS though and youtube-dl just downloades them and >[rtp @ ] Timestamps are unset in a packet for stream 0. – user14706760. 04 bitrate= 973. 3 GB, so I'm confident that the information is there, just that the file format is damaged. m3u8 -c copy demo. r/youtubedl A chip A close button. I've Googled this problem, but every solution I've found doesn't seem to work for me. The youtube-dl warning said there are malformed AAC bitstream. In FLV files timestamps "always" begin at 0 and are 32-bit "signed" but the spec doesn't give any guidance on how negative values should be interpreted or what to do in @Gyan - I replaced it with a proper 4ch sample (again my bad). 04s. ts Here is my current ffmpeg code to extract the frames: ffmpeg -i inputFile -f image2 -ss mySS -r myR frame-%05d. mp4 -c copy -map 0:v:0 -map 1:a:0 -shortest out. not stream copying): "-ss" is also "frame-accurate" even as input option. I also added -r 15 on all my output streams. The priming sample created in step 2 is affecting the timestamp post-offset. ffmpeg -i original. m I am trying to extract the timestamps of mp4 video using ffmpeg. I have tried IINA, QuickTime, Movist, and the same issue occurs. Commented Jun 30, 2022 at 19:01. com Mon Mar 22 14:05:29 EET 2021. This points to part of the file missing - so all blocks are moved out of their expected places, which The fix for this is to either: (1) transcode or recode instead of copy (2) identify where the keyframes are and align your start timestamp to the keyframe. If my tablet crashes during recording, the MKV file would still be readable with the correct And then merge the audio and video track once again by using: ffmpeg -i audio. I also went ahead and upgraded to FFMPEG 4 which came out 4/20 (after your original The issue is that the timestamps generated by this progress as if it is a normal video, stamping a 30 minute timelapse as if it were 25 seconds. mkv would do most of the job, and my Android tablet can actually do this fast enough. converse@gmail. out. – CodeF0x. This may result in I'm trying to make a program to create clips with subtitles, but instead of the overlaid subtitles syncing with the clip, they just start from the beginning of the movie. The moov atom, which organizes the ffmpeg -i rtsp://usr:pass@ipaddress/Streaming/Channels/1?tcp -c copy -map 0 -f segment -segment_time 20 -segment_format mp4 -reset_timestamps 1 "capture-%03d. mp4 has start time of 0. This is a valuable technique for various video editing tasks, such as OPs point which u/Brainiarc7 couldn't grasp is what the hell ffmpeg fixes when nothing is broken. 03. Fix your code to set the timestamps properly [mpegts @ 0x1fa76a0] first pts value must be set av_interleaved_write_frame(): Invalid data found when processing input For my purpose, it is necessary to do the two steps I am using below command to add timestamps to video: ffmpeg -y -i input. Viewed 15k times 5 I have a video of just under an hour recorded but it appears to be damaged somehow. Modified 3 years, 8 months ago. Hope this could helps malformated aac bitstream, use -absf aac_adtstoasc doesn't mean the input stream is invalid. Improve this question. mkv -filter:v "setpts=0. When generating an image sequence using concat, ffmpeg uses a hard-coded 25fps setting that gives the slideshow a maximum granularity of 1/25=0. mp4 -itsoffset -0. This seems due to the first audio packet timestamp information not being correctly propagated to the encoder (and to the muxer), and being set to 0, so that ffmpeg will fill the [FFmpeg-user] Timestamps are unset in a packet for stream 1. ts When examining the output1. ts -acodec libfaac -y columbia-intro. Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018. 03; Before submitting an issue make sure you have:. At least skimmed through the README, most On Mon, Mar 22, 2021 at 1:05 PM Peter B. > > This usually happens in case of multiplexes where the PCR of a > program is not taken into account with On 2021-03-21 17:50, Carl Eugen Hoyos wrote: > Am So. – Gyan. Then generate new timestamps while muxing to a container: ffmpeg -fflags +genpts -r 30 -i raw. Can't write packet with unknown timestamp av_interleaved_write_frame(): Invalid argument . m3u8 But when I resize video using this command, I get a timestamps warning: ~ $ ffmpeg -i test. Get app Get the Reddit app Log In Log in to Reddit. Any ideas? Try as I might everything I try with ffmpeg converts the frame rate but changes the number of frames to keep the same duration or changes the duration without altering the framerate. ts using, ffplay -i output1. The biggest culprit was the cameras I was using. FFMPEG is "fixing it" and warning you. mp4" -vn -acodec copy This library attempts to deal with timebase-unaware AVPackets by adding timebase to each Packet. 0, FFmpeg 4. With -ss 3 -i in. This is deprecated and will stop working in the future. The h264-stream was encoded with x264. mkv All ts files' path is put in filelist. mkv Then generate new timestamps while muxing to a container: ffmpeg -fflags +genpts -r 30 -i raw. seconds_before_frame = cap. You probably want -ss and-to before -i, example: ffmpeg -ss aa:bb:cc -to xx:yy:zz -i input. mp4" -show_frames -show_en Skip to main content. Commented Nov 27, ffmpeg -i 0. With -ss 3 -copyts -i in. Despite the high votes, this doesn't actually work as expected. Fix your code to set the timestamps properly. Ends with: [mp4 @ 000001daf4347540] Timestamps are unset in a packet for stream 1. I thought rate might be the key, but 1/5 and 150 both produce errors like this one: FFmpeg Data Fields. FFmpeg shows the timescale as the tbn value in the Using FFmpeg to Fix PTS Timestamps. For the head and tail of a stream, the encoder inserts blank samples for that purpose, which are to be skipped (at head) and discarded (at tail) by the decoder. The message appears when converting H264 elementary stream into mp4 video file. Expand user menu Open settings menu. Fix your code to set the timestamps properly >[rtp @ ] Encoder did not produce proper pts, making some up. This is Fix your code to set the timestamps properly" keeps popping up, I'm not very good when it comes to these sort of issues and it would be great if anyone knew a fix in the most simplest way possible. 194348) The relative starting point (in seconds) is s - b = 81953. I can update the AudioDecoderBuilder in a way There's probably, in all likelihood nothing wrong with the downloaded aac file. Maybe I need to install ffmpeg to a specific location for yt-dlp to use it? Edit: Using Windows Yes, the -t used as output option looks at the timestamps, which usually start at zero. . The usual solution for this situation: -fflags +genpts. com Mon Mar 22 00:36:55 EET 2021. The ESP32 series employs either a Tensilica Xtensa LX6, Xtensa LX7 or a RiscV processor, and both dual-core and single-core variations are available. Fix your code to set the timestamps properly [mp4 @ 035ce7c0] pts has no value Last message repeated 750 times I know the timestamps of each frame because i have the original video, and could also, for instance, provide them in a file such as a mkv timecode v2 file. mp4. mp4 -r 24 seeing. Or try to use a batch command to do it for merging multiple files. What I want are timestamps that match the timelapse. mka -i fourth. detect ERROR : [segment I don't know how to properly extract the timestamps or to correctly mux them into the new container. Modified 5 years, 3 months ago. mp4 -vf "setpts=PTS-STARTPTS+0" -c:a copy output. exe automatically stops playing MP3 from the network after a while Next message (by thread): [FFmpeg-user] segment muxer deprecation warning: On Fri, 16 Mar 2018 09:58:17 -0400 Joe Koberg <joe at koberg. at> Date: Sat, 11 Feb 2017 18:53:18 +0100 Subject: [PATCH Whenever I am muxing video stream in FFMPEG encoded with NVENC I receive the following message: [mp4 @ 0000023836b82040] Timestamps are unset in a packet for stream 0. Issues with outdated version will be rejected. 2120-1-alex. mp4 -map 0:a -map 1:v output. mp4 through ffmpeg. I've tried to convert it to . 0. 7 tells it to offset the timestamps on the following input by -0. Commented Jul 10, 2019 at 16:25. 04 seconds apart, they store a timestamp for each frame e. For a 48 kHz stream, the timestamp will be -1024/48000 s = -0. mp4 -map 0:v -map 0:a -map 1:s -c copy output. getRTPTimeStampSeconds() fractionofseconds_before_frame = VLC doesn't seem to report the correct timestamps of some aac files. Visit Stack Exchange This is deprecated and will stop working in the future. I thought rate might be the key, but 1/5 and 150 both produce errors like this one: ffmpeg -i input. [mp4 @ 0x7f7f53a280c0] Non-monotonous DTS in output stream 0:0; previous: 1554001, current: 1547456; changing to 1554002. Fix your code to set the timestamps properly [flv @ 000001e5315265c0] Packet is missing PTS av_interleaved_write_frame(): Invalid argument How do I fix this with ffmpeg? OR How do I get ffmpeg to work with yt-dlp to fix this automatically? The prompt says: "install ffmpeg to fix this automatically" but it doesn't work. The idea is that you're using an MPEG-2 transport stream as input and the AAC stream in it uses the ADTS format. This command will copy the audio stream and reset the video stream to start at timestamp 0. When playing the file, it will report how much of the audio has been played, but won't show the correct amount of time left. With FFmpeg, you can manipulate and correct PTS timestamps to fix playback problems in Chromium apps. 624278 - 81824. If the argument consists of timestamps, ffmpeg will round the specified times to the nearest output timestamp as per the encoder time base and force a keyframe at the first frame having timestamp equal or greater than the computed timestamp. mp4" -vn -acodec copy I am attempting to stream copy a DTS-HD MA audio stream into the matroska container. 9. <pb at das-werkstatt. ~ $ ffmpeg -i test. I've tried with several videos and noticed the same problem for h. It's the way fmpeg is interpreting it and baulking at it. Use fixed quality scale (VBR). ffmpeg -fflags +genpts -i input. e. So i was wondering if theres any other non-re-encoding option to fix the DTS issue. h264 -c:v copy output. – Ely. For this I have the following command: ffmpeg -y -i input. 1, when transcoding with `ffmpeg` (i. Changing the timestamps prior to encoding is risky since ffmpeg's framerate conversion method uses timestamps to check sync drift and make decisions about dropping or duplicating frames. I have ffmpeg installed, what do I need to do Skip to main content. I used vlc in Sender host and I used ffmpeg in Receiver host. Install ffmpeg to fix this automatically" is a youtube-dl/yt-dlp message. But I've checked it with ffprobe and it seems that first ffmpeg -y -f video4linux2 -s vga -r 30 -fs 1M -i /dev/video0 -timestamp now -copyts . Please show the FFmpeg command you have tried using setts. ts" -vsync 2 -async 1 -c copy output. The steps below (to be applied once) resolves it for me and the resulting concat plays fine with ffplay, Potplayer, VLC, WMP, Chrome and Firefox. DO NOT USE Method 2, -g appears to be deprecated. It allows you to adjust the timestamp of each frame or audio sample in your video. mp4 Change the value of -r to the desired playback frame rate. mp4 A brief explanation from Jann. ts' for reading [mp4 @ 00000229460c8500] Non-monotonous DTS in output stream 0:0; previous: 357357, current: 357357; changing to 357358. I have a slow computer so re-encoding the file is not an option for me. FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. Previous message (by >[rtp @ ] Timestamps are unset in a packet for stream 0. Definition at line 289 of file internal. 04s when I read the video with mpv. Fix your code to set the timestamps properly I am setting timestamp on each encode input: NV_ENC_PIC_PARAMS Adding all mp4 file in the directory with FFMPEG . 0 build from gyan. They said this works and was nice to be able to help a friend of a friend with it - but I am still curious about how I can fix timestamps. – ffmpeg is not skipping packets, at least not in the way you think. Normally I would use . The general command structure for The Topaz render is correctly 1258 frames, but TC starts at 00:00:00:00. cc Sun Jun 7 23:03:19 EEST 2020. Fix your code to set the timestamps Fix your code to set the timestamps properly. PS: 1. Since Kurento uses GStreamer for the video recording, so maybe it would be a better option to reconfigure Kurento to fix timestamp during the video recording? I can provide any videos and commands which I use. To double the speed of the video with the setpts filter, you can use: ffmpeg -i input. garden_cam. If you want to get support from official help Fix your code to set the timestamps properly av_interleaved_write_frame(): Invalid argument. 08s (the closest rounding) apart, resulting in a Yes, the -t used as output option looks at the timestamps, which usually start at zero. Log In / Sign Up; Advertise on When I use ffmpeg to transcode one of the media segment (ex 800k bps to 200k bps) I guess it's the ffmpeg reset the PTS(presentation timestamp) of segment. mp4 [mp4 @ 0xb400007429e52d00] Timestamps are unset in a packet for stream 0. Fix your code to set the timestamps properly [mp4 @ 000001daf4347540] Encoder did not produce proper pts, making some up. com> wrote: > Hi everyone! > > I'm using FFmpeg's segment muxer to split MPEG-TS recordings. mkv The usual advice, as far as I have understood, is to give options to ffmpeg that make it ignore those errors and make it compute the DTS from the PTS. or. mka -i second. ffmpeg -i first. Chooses between 1 and 2 depending on muxer capabilities. ffmpeg -use_wallclock_as_timestamps 1 -safe 0 -f concat -i file. Copy link elgorro commented Aug [mp4 @ 000001fe0193b700] Application provided duration: 2585263321 / timestamp: 6303355764 is out of range for mov/mp4 format [mp4 @ 000001fe0193b700] pts has no value [mp4 @ 000001fe0193b700] Application provided duration: 2585443321 / timestamp: 6303535765 is out of range for mov/mp4 format [mp4 @ 000001fe0193b700] pts has no value ffmpeg -vsync 0 -copyts -i columbia-intro. The audio stays in sync as ffmpeg does the full conversion calculations and seems to get everything right. ͏ As of FFmpeg 2. ffmpeg -i file1. For this reason it cannot shift decode timestamps of the first few frames into the negative range if B-frames are present to align the zero point of the timescale with the earliest PTS (in case of Avidemux, with the PTS of the first When i run ffmpeg -f video4linux2 -i /dev/video0 -c:v copy test. ffmpeg is pretty good at reconstructing files and can remove various strangeness various encoders insert. Open menu Open navigation Go to Reddit Home. Neither -r 25 nor -vsync drop changed anything. [FFmpeg-user] Recorded Frame Timestamps are Inconsistent! How to Fix it? Carl Zwanzig cpz at tuunq. txt, most of time it runs well, but when processing some ts files, FFmpeg gives following errors [matroska @ 044bf9c0] Timestamps are unset in a packet for stream 0. Oddly MPC with K-Lite Media Pack can play the video just fine. mp4' After processing around 90000 frames ffmpeg gets somehow stuck (but the CPU keeps running on 100%) and can only terminated using kill combined with Ctrl+C. den which becomes 4,50,000) so that output Subject:[FFmpeg-user] Timestamps are unset in a packet for stream 0. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community With certain IP cameras, we become aware of this issue as well, and found a fix:-correct_ts_overflow 0. The muxed mp4 plays fine. bin -vcodec copy -acodec copy 5_fps. Are those timestamps safe to use as a key to point to a frame ? "Possible MPEG-TS in MP4 container or malformed AAC timestamps. Symptoms One question though, do we have a pts/dts recreation option by discarding the one that came with the video to fix the pts/dts collisions without encoding i. With ffmpeg and ffprobe in the same directory as yt-dlp - in this instance try to download both the video and audio with ffmpeg, therefore giving it less opportunity to complain, thus: Substitute your selections where I have used bv+ba for [FFmpeg-devel] [PATCH] libavutil/timestamp. I think your hypophysis about the P-Frame and B-Frames might be wrong (it's hard to tell). 0 q=-1. dev, on Windows. > > It is only needed if 60fps recording is wanted. 48. Fix your Method 3 works as of the FFMPEG version of April 2015, but you should verify your results with with the script included at the bottom of this post, as the FFMPEG documentation is unclear as to the effect of the option. Video sync method. The bottom line. I disabled dynamic GOP and dynamic fps. When there is more than one stream for the camera, timestamps are generated using the RTCP ntp time and RTP timestamps together I am able to get frame time stamp for a video using ffprobe using the following code: ffprobe inputVideo. If it's not, read this FAQ entry and update. . The advisable way to do this is using the option -output_ts_offset N where N is in seconds. mp4 - [matroska @ 0000023ccef9d980] Timestamps are unset in a packet for stream 0. Is it anyway i can use ffmpeg to correct it to 00:00:20? The best solution would of course to be able to set the correct start time in my first command where i take out the 10 second part but i would also be ok with running a 2nd command to fix the time. [mp4 @ 061b8f00] Non-monotonous DTS in output stream 0:0; previous: 624625, current: 89247; changing to 624626. 5 would not correct it. setpts filter. Previous message (by thread): [FFmpeg-devel] [PATCH] libavutil/timestamp. Description: This query explains how to use the -vsync and -async options in FFmpeg to fix timestamp issues when concatenating TS files. ffmpeg -use_wallclock_as_timestamps 1 -thread_queue_size 512 -i /dev/video0 -c copy test. 1 Audio is ahead Example to shift by 3 seconds: ffmpeg -i input. mp4 -vf setpts=N/FR/1. The manual says this ignores timestamps completely, scanning the input file according to the provided How to Fix it? Mark Filipak (ffmpeg) markfilipak at bog. And added my workaround. How do i set the frame timestamps for each of the incoming raw frames, so that ffmpeg encodes a VFR file? I am using an up to date 5. Except for cases like these when -copyts is used. Intended for use with formats such as mp3 with ad-hoc gapless audio support. ogg ffmpeg -safe 0 -f concat -i file. For the theory see the WebM Project General WebVTT Notes, in practice input option -fix_sub_duration can get rid of this: ffmpeg -fix_sub_duration -i captions. To shift the timestamps forward by 10 seconds, you can use the following command: ffmpeg -i my_video. ts -c copy output. mp4 -vf scale=426:240 test_240p. I use following command. mp4 -c copy output. It could create an additional issue so here is more info about what it Adding all mp4 file in the directory with FFMPEG . ts file with Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company So the duration is ok but the start time is incorrect. aac and open it with other program. mp4 -c copy -f segment -reset_timestamps 1 -segment_time 5 -segment_format mp4 Fix your code to set the timestamps properly av_interleaved_write_frame(): Invalid argument. vob' -c copy 'video. Alternatively, you can use the expression “PTS-STARTPTS+0” which will add 0 to the timestamps, effectively resetting the timestamps to 0. mp4 I've used "-itsoffset" both positive and negative values in front of either the video or audio sources and I've tried them without the "-shortest" unable to read frames from ffmpeg process; timestamps are unset in a packet for stream 0. mp4, the first sought frame has PTS of 18 after demuxer, which gets carried Override using AVStream->discard or -discard for ffmpeg command. mp4 DTS in output stream 0:0; previous: 26783482, current: 16149020; changing to 26783483. How could I approach fixing it? So This is deprecated and will stop working in the future. If this Describe the bug When StaxRip export a video using FLV, FFmpeg will error: [flv @ 000001e5315265c0] Timestamps are unset in a packet for stream 0. The file format is h264 MP4 and the file size is 2. ffmpeg -y -f concat -i filelist. In ffmpeg, I get the following warnings: [adts @ 00fb6fc0] Skip to main content. Use -t as input option: ffmpeg -y -copyts -ss 1:49 -t 1:00 -i ~/Videos/input. l at gmv. Closed elgorro opened this issue Aug 30, 2022 · 7 comments Closed [Support]: FFmpeg on 0. It could create an additional issue so here is more info This is deprecated and will stop working in the future. UDP Streaming Mar Andrés López mar. exe. The more, I've tried fixing the files using MKVToolNix GUI, without success. [mp4 I use FFmpeg concat to merge multiple ts files. mp4 command is working but i don't get desired output. I use following command ffmpeg -y -f concat -i filelist. 0-RC2 crashes: Timestamps are unset in a packet #3735. mp4, first sought frame has PTS of 0 after the demuxer stage, and out. This You can fix the DTS errors by adding -use_wallclock_as_timestamps 1 before your camera input, same goes for the thread_queue_size error, add -thread_queue_size 512 before -i. ts -c copy out. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted [segment @ 0x55968f393e80] Timestamps are unset in a packet for stream 0. (second message is generated multiple times) still the output MP4 file looks/plays fine. mp4 i get [mp4 @ 0x1e44570] Timestamps are unset in a packet for stream 0. e. Stream #0:0(eng): Video: wmv3 (Main) (WMV3 / 0x33564D57), yuv420p, 640x480, 1000 kb/s, 25 fps, 25 tbr, 1k tbn, 1k tbc. I dont know if the ffmpeg lib I am using has ffprobe from this link. m3u8 And then merge the audio and video track once again by using: ffmpeg -i audio. mp4 -vf "drawtext=fontfile=roboto. 264 encoder: ffmpeg -i input. I came across this post from google trying to overlay time elapsed for my video. Previous message (by thread): [FFmpeg-user] Using Homebrew to install FFmpeg, But having wired problems. A remuxing using All timestamps in the input media file will be written out to a text file (which can then be parsed for errors). /*. I've verified and I assure that I'm running youtube-dl 2018. I've looked at the drawtext docs. It's rather the re-encoding that's invalid. (each time a new segment is made) (each time a new segment is made) [FFmpeg-user] segment muxer deprecation warning: "Timestamps are unset in a packet for stream 0" Peter B. This may result in incorrect FFMPEG is "fixing it" and warning you. The -use_wallclock_as_timestamps option tells FFmpeg to ignore those timestamps and instead use the wallclock time: For that reason, we’ll need to have the latest version of FFmpeg. The following is equivalent: ffmpeg -ss 00:00:30. 03 FPS, and Resolve still For that reason, you may remove entire audio from video file using "-an" ffmpeg option. We fix the date as text, then use the offset for the time. The ffmpeg package is available on package repositories for most distributions. Previous message Next message (by thread): [FFmpeg-user] Recorded Frame Timestamps are Inconsistent! How to Fix it? Messages sorted by: Am So. ts|file3. mp4 Following command also gives the same mismatching frame timestamps: ffmpeg -i 5_fps. wmv -c copy -t 00:00:10. When I run the ffmpeg, I get a lot of these errors: [avi @ 0x66c1900] Non-monotonous DTS in output stream 0:1; previous: 3497, current: 3480; changing to 3498. So I have been typically trying things like; ffmpeg -y -r 30 -i seeing_noaudio. Finally, I added -avoid_negative_ts 1 in order to get the timestamp of the first frame to be non-negative. What the concat demuxer does is add an offset to the timestamps of all files after the first one. redd. ͏ The input will be parsed by keyframe, which is very fast. h: Fix loss of precision in silencedetect timestamps for long files Michael Niedermayer michael at niedermayer. i have tried copying the 1. srt This may result in incorrect timestamps in the output file. We may also use FLV container format (it is better designed for concatenation, and solves the time base issue): It is making the adjustment because you are concatenate-and-copying streams, of which data frame carries timestamp (unlike WAV or MPEG streams). When it removed, no incorrect time in video exists. ts -vcodec nvenc -acodec copy -f hls -hls_time 10 -hls_list_size 5 -copyts playlist. I'm using the following code: ffmpeg -i input_0. Learned that the proper term for it is Burnt-in timecode, and found a post that was close. frame= 1472 fps=0. I tried using ffmpeg-c copy which tends to fix many broken timestamp files. mp4 -itsoffset 00:00:03. März 2021 um 23:31 Uhr schrieb If the container allows it, you can start at non-zero PTS. Tried this: ffmpeg -err_detect ignore_err -i video. Hello! I'm trying to convert a . e in copy codec mode?, is it even possible? In ffmpeg I have tried -fflags +ignpts, -fflags +igndts, but no effect whatsoever. OPs log isn't that edited. Full output from ffmpeg here. us Tue Mar 16 04:49:11 EET 2021. mp4" Now I have read somewhere on how to repair some broken files. ffmpeg throws Non-motonous DTS errors that look like this: [matroska @ 00000294f0f902c0] Non-monotonous DTS in output stream 0:0; previous: 100, current: 33; changing to 100. mp4 Yet I get [mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 2069, current: 2067; changing to 2070. ts stream. First, timestamps are generated out of the RTP demuxer. txt, Fix your code to set the timestamps properly [matroska @ 044bf9c0] Can't write packet with unknown timestamp av_interleaved_write_frame(): [FFmpeg-user] Recorded Frame Timestamps are Inconsistent! How to Fix it? Carl Zwanzig cpz at tuunq. it shows 1. The video FFMPEG supports "input seeking" and "output seeking". ͏ Previous behavior (seek only to nearest preceding keyframe, despite inaccuracy) can be I am trying to merge two video files into one using ffmpeg on Windows. ts FFmpeg - Concatenate multiple TS files into one with correct timestamps Let's say your MPEG-TS has start time of 15 and duration of 10s. int frame_no=-1; //starting with -1 gives the same ffprobe results as command line ffmpeg This is the result of design decision to use unsigned values for timestamps in Avidemux, contrary to signed values in ffmpeg. I have also looked at other Now I can "fix" both the DTS and muxing errors by adding in "-use_wallclock_as_timestamps 1", but now the video will pause for a second every second or so. When using the above command how would I add a timestamp to each frame? So i know for example frame 5 is at 9s within the video. mpeg -codec:v copy -codec:a copy output. Timestamps are unset in a packet for stream 0. h: Fix loss of precision in silencedetect timestamps for long files @PatrykCieszkowski remember that this is a solution for ffplay not for ffmpeg. 6 GB. Previous message (by thread): [FFmpeg-user] Recorded Frame Timestamps are Inconsistent!How to Fix it? This may result in incorrect timestamps in the output file. You can write a script to detect the keyframes and set your timestamps from Anyway, it seems that the timestamps are messed up on the file. mka -i third. And the main idea is to reduce the delay while playing a stream. Fix your code to set the timestamps properly}}} I found that a temporary fix would be to include -fflags +genpts. mkv I try to mux a h264 elementary-stream and an aac audio-stream to a mp4-file with ffmpeg. As passthrough but destroys all timestamps, making the muxer generate fresh timestamps based on frame-rate. mp4 -ss 00:09:53 -to 00:11:53 -async 1 output. mkv If you want to reduce the size of the video, you can try to set a Constant Rate Factor (something like "constant quality") and re-encode it using x264, the most popular h. I have a maximum bitrate instead of variable. 976 fps (24000/1001) but I want to convert it to 25fps without reencoding and loosing quality. Comments. Ask Question Asked 5 years, 3 months ago. März 2021 um 22:13 Uhr schrieb Mark Filipak (ffmpeg) > <markfilipak at bog. mka -filter_complex "[1] adelay=184000 Is the any alternative way to add audio files according to their timestamps? ffmpeg; Share. mp4 When I extract audio from a TS video file, with either VLC, ffmpeg, VSDC Video Editor or Audacity, I get a different length audio file. corredor_estreito. In other words, the common solutions also make ffmpeg alter the DTS time stamps. Please let me know if you have a fix! A lot of people recommend -fflags +genpts but this does not seem to do anything for me. mkv and 2. >[rtp @ ] Packets poorly interleaved, failed to avoid negative timestamp -12886 in stream 0. msec), but timestamps can also be in HH:MM:SS. my usual command: ffmpeg -f concat -safe 0 -i <(for f in . Omitting the -c copy will make it slower and more accurate by re-encoding, but still faster than if the -ss and -to are specified after -i, since that case means to trim after having For anyone else having this issue, I had a similar problem that was solved by adding -fflags +genpts before the input and have it generate the missing timestamps for me. [FFmpeg-user] Recorded Frame Timestamps are Inconsistent! How to Fix it? Carl Eugen Hoyos ceffmpeg at gmail. 5*PTS" output. The auto-generated SBV example shown above (downloaded from a YouTube movie trailer) actually uses overlapping timestamps, and FFmpeg kept them as is in its SRT conversion. Once FFmpeg is installed, we can verify it through one question that currently drives me crazy. You'll need to set 3 parameters to obtain identical timestamps: -vsync 0 to avoid frame duplication and timebase adjustment, -enc_time_base -1 to avoid timebase adjustment at the encoder layer, and -video_track_timescale with the inverse of the source timebase. ts -vf showinfo reveals that start timestamp under pts_time is not equal to zero. Explaination: It stems from a couple of issues in FFMPEG. You may extract audio from the One option which exist is to add -reset_timestamps 1 to the command line: ffmpeg -i input. Oh, I see, then simply using ffmpeg -use_wallclock_as_timestamps 1 -i - -c:v copy out. 0 Lsize= 5825kB time=00:00:49. From 40b6497e7716372545083be6704058afb2d404e4 Mon Sep 17 00:00:00 2001 From: Carl Eugen Hoyos <cehoyos@ag. 0213s. Serious questions: 'setpts=N/FR/TB' seems I use FFmpeg concat to merge multiple ts files. ts -f mpegts -acodec libfaac -ar 48000 -ab 64k -vcodec libx264 -b 250k -flags +loop I used -use_wallclock_as_timestamps 1 and -r 15 (15 is FPS) on my input stream. AMF TranscodeHW sample does conversion of timestamps from AMF to FFmpeg scale. Best option always seems like encoding the video in all the cases. mp4 -c copy -map 0 -vf "setpts=PTS+10/TB" output. us> wrote: > Hello, > > This patch adds code to track and correct timestamp discontinuities, fixing > "non-monotonous dts" errors and timing issues with HLS playlists. org> Cc: Hi All, I am using below command to push the video to Wowza server, since we are pushing raw h264 video, the rtp packet doesnot have the timestamp, and we This video file I can't convert since it always erros to: Missing key frame while reordering index according to edit list I can't even read the details with: ffmpeg -i missingKeyFrameProblem. This may result in incorrect timestamps in the output file. avi -hide_banner -show_entries frame=frame_no,best_effort_timestamp_time -of json it generate With this information, you can easily calculate the values for ffmpeg's -ss and -to parameters: Let b be the stream start timestamp (here 81824. [hls @ 0x15bed20] Non-monotonous DTS in output stream 0:0; previous: 1 Now I can "fix" both the DTS and muxing errors by adding in "-use_wallclock If I shift the audio, I get audio that starts off behind but still ends up ahead. ts|file2. , and your codec is intra-coded, so we don't have to worry about GOP. mp4' After processing around 90000 frames ffmpeg gets somehow stuck (but the CPU keeps running on 100%) and can only terminated using kill combined with The priming sample has a negative timestamp. Try Audacity to extract audio from video file, or ffmpeg -i "input. With ffprobe it is like following. Fix your code to set the timestamps properly [mp4 @ 0x1e44570] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. FFmpeg development is very active. This may result in incorrect timestamps in the output file. > > For some time, FFmpeg has not properly handled discontinuous timestamps in > the MPEG-TS stream from Apple HLS playlists. Is this possible? Cant find any -> I am rescaling output packet timestamp values from codec to stream timebase (25 -> 90,000) before writing. Fix your code to set the timestamps properly [mpegts @ 0x55a762d16a40] Timestamps are unset in a packet for stream 0. 820733 I have a mkv (h264) video that is 23. At the very end, I join 5 MP4 videos with ffmpeg by using the following batch file: ffmpeg -i video1. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I am able to get the RTP timestamps by using ffmpeg and opencv currently, however, I am trying to actually get the timestamp at which the frame was captured. mp4 -vcodec copy This may result in incorrect timestamps in the output file. 7 seconds. The video codec is MPEG-4 ASP (encoded with XviD), and the AVI was created with AVI-Mux GUI. ffmpeg -i input_video gives me a warning: stream 0, timescale not set So again ffmpeg stubbornly refuses to "play" past the duration. drop. detect ERROR : [flv @ 0x562b034da040] Timestamps are unset in a packet for stream 0. This is the default method. The concat demuxer likely cannot adjust the timestamp in the stream data on the fly (to avoid the warnings/corrections from the main ffmpeg program). mp4 This command will reduce the duration of the video by 20%, effectively speeding it up. Members Online • jonas04anderberg . Made some changes and was able to get the timecode burn in for my video in [FFmpeg-devel] flvenc: Fix sequence header update timestamps. 264 bitstream in video2. us>: > >> I think '-framerate 60' may not be needed at all. I usually use OBS to record gameplay by the way. ffmpeg probably wasn't the correct software to use, due to some of the buffer underflow errors & 'incorrect' timestamps. mp4 and I tried. com Tue Mar 23 01:31:59 EET 2021. Newly added values will have to be specified as strings always. I'm encoding x265 with FFMPEG and then muxing, but on mux I get the error: Code: [matroska @ 000001c974ade080] Timestamps are unset in a packet for stream 2. In almost any video player, it will think an 1 hr 10 min file is like 4 minutes or some other wrong number. Previous message (by thread): [FFmpeg-user] Recorded Frame Timestamps are Inconsistent! How to Fix it? Next message (by thread): [FFmpeg-user] Recorded Frame Timestamps are Inconsistent! How to Fix it? Messages sorted by: On 2021-03-15 13:43, How should I pass additional parameters in ffmpeg to avoid that? I know it might be something wrong with the timestamp but I don't know how to fix that. , 21. This forces FFMPEG (a hack really) to use the The following solution may not work in all cases, but I think it is going to work in your case (H. mp4 Let's break down the The auto-generated SBV example shown above (downloaded from a YouTube movie trailer) actually uses overlapping timestamps, and FFmpeg kept them as is in its SRT conversion. There is also a method named time_base() on the AudioDecoderBuilder that allows rescaling packet timestamps into a given timebase. I'm trying to go from . > > It works as expected, but I get the following deprecation warning: > >----- > [segment @ 0x55bfa3c540c0] Timestamps are unset in a packet for stream > 0. Previous message (by thread): [FFmpeg-user] Recorded Frame Timestamps are Inconsistent!How to Fix it? Again, pts /duration is controlled by the app. ͏ The demo produces 1 image frame at 23 min from the beginning of the movie. the problem occurs if the third file overlaps the first ☹ Share Improve this answer How can I fix a damaged MP4? Ask Question Asked 9 years, 3 months ago. With H. However, this method does not set the pkt_timebase field on the codec context. [FFmpeg-devel] [PATCH 1/2] doc/examples/transcode: fix timestamps scaling Stefano Sabatini stefasab at gmail. support triage. 0 output. it is adding timestamp like this: I want to use different date format like this: Simple Date ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. pb at das-werkstatt. Is there a way to fix them using FFMPEG in a batch, without having to process each file individually? I On Sat, Dec 15, 2018, 20:50 Jan Ekström <jeebjp@gmail. mp4 warning is . find_prev_closest_index(), fix_index_entry_timestamps(), free_stream() which also assumes negative timestamps do not happen). mp4 If there is an issue with video timestamp that's causing the said behavior, using (PTS-STARTPTS)/1. I can then renormalize on my computer (although the file seems to play fine without renormalization). The VOB itself is supposed to be 16:41 in length, but VLC reads it as 3:41. mp4 -vsync 0 -enc_time_base -1 -video_track_timescale 1000 test. [mp4 @ 0x556a367c4200] Non-monotonous DTS in output stream ffmpeg -f lavfi -i anullsrc -rtsp_transport tcp -thread_queue previous: 0, current: -22500; changing to 1. Unfortunately this did not fix the problem. 5 output. Fix your code to set the timestamps properly [2022-10-20 02:19:38] ffmpeg. ffmpeg -i input. The process has been proven to work over and over (with over 100 files merged together at some points) - but I have come across an input file that is causing the process to fail with the errors: [Support]: FFmpeg on 0. The issue is that the timestamps generated by this progress as if it is a normal video, stamping a 30 minute timelapse as if it were 25 seconds. I now have the following questions: Why does ffmpeg care about wrong timestamps at all when -codec copy is given I'm using ffmpeg to concat multiple files into one consolidated file, would exiftool -TagsFromFile Source. 000: They’re built from different components called “atoms” that store the actual video data and metadata like timestamps and file structure. -1, auto. wmv In the above command, the timestamps are in seconds (s. 5/TB -crf 18 -af atempo=1. I am currently using: ffmpeg -i input. This is deprecated and will stop working in I'm using ffmpeg to generate a MPEG-TS stream using the following command. For a rolling time use a time offset. org> wrote: > Hi, > > This patch resolves one very specific use case: > > - When you use the mpegts muxer; > - And use the global parameter “-copyts”; > - And use the parameter “-muxrate” for the mpegts muxer; > - And use too the Joining multiple files using ffmpeg concat seems to result in a mismatch of the timestamps or offsets for the audio. srt FFMPEG - Timestamp unset in a packet. I know mkvmerge can do it ( with option --default-duration '0:25fps') but I'd like to do it directly from ffmpeg if ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Thursday, 18 de April de 2019 11:01, Andreas Håkon via ffmpeg-devel <ffmpeg-devel@ffmpeg. I did a work around to try find the time at which the frame was captured (code is in python). But FFmpeg requires a different scale, it is not fixed and depend on container (muxer) type. ylz fgra grfu zdej pguw qnj lrqpcs rjnr kkesej ums