> I converted it to an MP4 using the command: > ffmpeg -i telecomcto.flv -c:v copy -c:a aac -strict -2 -b:a 64k -ar 44100 > -ac 1 telecomctotest.mp4 > > I have not figured out how to get the audio to be in sync with the video. For five minutes of recording i am getting last ~40 seconds video without audio and audio is playing little faster then original audio. About 4 seconds - just enough to be really annoying and make it impossible to follow along. Then I wanted to cut that file to a 1 minute segment starting at the 51st minute (-ss 51:00 -t 60), it was obviously still out of sync. @JojoLastiko, I am also facing audio and video sync issue, on slow internet speed. The audio is just being encoded/output via a continuous buffer, which will just dump out wherever it is up to you when you stop recording video frames - it is not uncommon for there to be more (or even less) audio in the file than is actually required for the corresponding video. > Hi I think your problem is caused because the flv file is variable *frame* rate. With this the audio was in sync. Anyone knows how to deal with it please let us know. Hi folks, I'm having a strange problem with audio/video playing out of sync on some videos I've converted with ffmpeg. If I use the -ss flag to cut off the beginning then the audio is out of sync (I also get the red message: Buffering several frames is not supported...) I found that if I convert the .wmv to .avi first (using FFMpeg as well) I don't get the audio sync problem when I convert the .avi to .flv Thicken Stir Fry Sauce Without Cornstarch, Three Levels Of Difficult Conversations, Symbolism Of Marriage In The Bible, Vinyl Vs Laminate Flooring, Leela Palace Bangalore, Restaurants In Gettysburg, Pa, Fierce Guardianship Commander Deck, Microsoft 365 Icons Svg, " />
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ffmpeg cut video audio out of sync

I've realized that if I copy the .dv to any other container, the audio and video is obviously out of sync. I have a lot of clips made with ffmpeg using this command: ffmpeg.exe -ss XX:XX -t XX:XX -i original.mp4 -c copy clip.mp4.. That copy option gives a couple seconds of silence in a result clip, but when a sound starts it is perfectly synced and all players I tried can handle it correctly.. However, when I used the same cut (-ss 51:00 -t 60) on the original .dv it was in sync! As a follow-up on Video concatenation puts sound out of sync, I have 6 video clips where the audio is 200 ms shorter than the video.The last clip has a chair banging on the floor and serves to measure the total misalignment in the concatenation. ffmpeg -i bird.avs.MP4 -acodec copy -vcodec copy -ss 00:08:40 -t 00:01:00 test.mp4 mencoder -ss 00:08:40 -endpos 00:01:00 -oac copy -ovc copy bird.avs.MP4 -o test.mp4 I am trying to use ffmpeg and mencoder to slice a portion of my video out but the audio is always 2 seconds out of sync. I did tried @aydinkn suggestion, but still sync issue exists. After trying a few random things, I managed to make the audio/video sync by changing the rate of the audio: ffmpeg -i witness.mov -af asetrate=48018 resampled.mkv The resampled.mkv has correct sync, but unfortunately the audio is shorter than the remaining video for a few seconds. ffmpeg -i test.mp4 -ss 2 -to 10 -c:v copy -c:a aac out.mp4 That is, I reencoded the audio. Thanks. Unfortunately when I viewed it, I saw that the video and audio were out of sync. I don't think it makes a difference but note that my usecase needed the … problem with audio/video sync after conversion. Usually audio recording is just a continuous steam, with no concept of video frames. The file I recorded is "out.ogg" and "ffmpeg -i out.ogg" shows that it's "off" Input #0, ogg, from 'out… I tried concatenating them simply with: > > I converted it to an MP4 using the command: > ffmpeg -i telecomcto.flv -c:v copy -c:a aac -strict -2 -b:a 64k -ar 44100 > -ac 1 telecomctotest.mp4 > > I have not figured out how to get the audio to be in sync with the video. For five minutes of recording i am getting last ~40 seconds video without audio and audio is playing little faster then original audio. About 4 seconds - just enough to be really annoying and make it impossible to follow along. Then I wanted to cut that file to a 1 minute segment starting at the 51st minute (-ss 51:00 -t 60), it was obviously still out of sync. @JojoLastiko, I am also facing audio and video sync issue, on slow internet speed. The audio is just being encoded/output via a continuous buffer, which will just dump out wherever it is up to you when you stop recording video frames - it is not uncommon for there to be more (or even less) audio in the file than is actually required for the corresponding video. > Hi I think your problem is caused because the flv file is variable *frame* rate. With this the audio was in sync. Anyone knows how to deal with it please let us know. Hi folks, I'm having a strange problem with audio/video playing out of sync on some videos I've converted with ffmpeg. If I use the -ss flag to cut off the beginning then the audio is out of sync (I also get the red message: Buffering several frames is not supported...) I found that if I convert the .wmv to .avi first (using FFMpeg as well) I don't get the audio sync problem when I convert the .avi to .flv

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