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synchronize problem
I have a flv file seems have different length of video and audio inside, but it can be played correctly in Mplayer. the file test.flv can be got from here:
https://docs.google.com/leaf?id=0B4FL1ZwF1rkjNjM0YmQ2NjctYjViMi00YjkzLWFiZjctZmVkZTcwMmM4ZTFm&hl=en
You can already see that the audio and video are not synchronized in this preview. I tried some command to find the reason:
ffmpeg -i test.flv
I got: Duration: 00:28:53.61
Then I extract the audio stream to a mp3 fileffmpeg -i test.flv -acodec copy test.mp3
ffmpeg -i test.mp3The audio file Duration: 00:28:51.24
Obviously the video and audio lengths are different. My question is how can I make them synchronized. I hope I can do that without recoding the video stream.
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1 Reply
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[Qiang Wang] “Obviously the video and audio lengths are different. My question is how can I make them synchronized. I hope I can do that without recoding the video stream.”
Have a look into the -async option.
Michael
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