All Questions
42
questions
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69
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Automatically synchronize two audio streams with ffmpeg
Say I have a video of a talk but the soundtrack is bad, and I happen to have an audio recording of the same talk made with a good mike. Is there a way, with ffmpeg, to replace the bad audio with the ...
- 137
1
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0
answers
60
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How to create timestamps for raw H264 to make it VFR using audio as reference?
I had an MP4 screen recording which got corrupted (missing moov atom).
I tried untrunc, recover_mp4_to_h264 and MP4Fix, and the latter gave me a complete result.
However, the result was pure h264 and ...
- 131
1
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0
answers
2k
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Remote desktop audio lag
Why when using remote desktop, when playing a video, my keyboard executions are almost perfectly in sync with the image on the screen, but the there is like a 1 second audio delay and sometimes 2 ...
- 123
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0
answers
85
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How to force audio not being delayed compared to video while processing ffmpeg filters?
I apply zoom filter on a 2k video but I've noticed the audio doesn't go with it. It's slightly delayed. I guess it's an issue with my cpu or gpu because there are lot of processing.
ffmpeg -i e:/vid....
- 149
1
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0
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377
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How to detect in real-time, whether there is an audio video sync or lag using FFMPEG?
I'm not asking about how to fix an audio video sync issue or lag. That I'll figure out, using FFMPEG's timeline editing filter. My question is about whether there is a way to detect if the audio and ...
- 1,089
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votes
2
answers
1k
views
Can ffmpeg automaticaly align audio and video tracks
I have searched and found many similar questions, but not this one. I've experimented and can't come up with an answer.
I have a Standalone "Digital TV Converter Box". This receives ...
- 165
2
votes
1
answer
1k
views
How to do automatically transfer subtitles from one video to another ? (based on video stream)
I have the following :
a mkv file (let's call it A) with video, audio and subtitles correctly synchronized.
another mkv file (let's call it B) with video and audio also synchronized but without ...
- 931
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0
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1k
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Fix TS File Audio Sync Issue Using FFMPEG
I have a few .ts files which I've downloaded from the web that I want to chop up into smaller files. I'm using FFmpeg to do this, but each time, after about 3 minutes the video starts to fall behind ...
2
votes
2
answers
1k
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ffmpeg - video and audio out of sync
This seems to be a common problem, but the answers I found don't seem to apply to my situation.
I'm merging 6 videos (one of them is a short background that loops) into 1 output video, and the audio ...
- 163
1
vote
1
answer
2k
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2020: To quickly and efficiently play an external audio track in sync with a video?
To quickly and efficiently play an external audio track in sync with a video?
How to play a video with a different audio track?
https://superuser.com/a/1077106/183467
Tried this, but the last step ...
- 991
2
votes
0
answers
687
views
FFMPEG Extracting MP3 from MP4 returns shorter audio file
I have lost so much time over this problem and really need some professional help. Over the last days I recorded some VHS tapes, I used ffmpeg which worked great! When I finished, I noticed that must ...
- 21
1
vote
1
answer
2k
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Trimming to milllisecond in FFmpeg causing massive slowdown in processing speed
I'm new here, first time joining a forum site like this so my sincerest apologies if I suck! Thanks in advance for your patience. I'm running Windows CMD on my laptop.
I am trying to trim (delete) ...
- 13
0
votes
0
answers
2k
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Audio and video from MKV file getting out of sync in multiple media players
I noticed an issue while playing MKV files on my HP laptop. After about an hour or so, the audio starts to get out of sync with the video, and the delay becomes greater and greater. If i restart the ...
- 141
1
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0
answers
516
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Youtube Audio and Video go out of sync in Chrome and some of my other videos
Hi i had a question since i cant seem to figure out whats wrong YouTube also some of the videos on my computer the sound will be out of sync withe the video. Its like a 1 second laps in the video. i ...
- 11
1
vote
1
answer
2k
views
Ensure audio and video track are EXACTLY the same length
I generate 200 video files based on audio files generated using sox, combined with image files. Most clips are shorter than one second, none is longer than 6. I then concatenate these files and there ...
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