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Ozan Temel
Asked: 2017-04-15 00:18:43 +0800 CST

ffmpeg rotate problem

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I'm trying to rotate mp4 videos with ffmpeg. Couple of videos succesfuly rotated but one. The problem is audio out sync for entire video. I also used an ios app which was succesful to rotate. Have any idea what's wrong?

This is the code i've used for:

ffmpeg -i input.mp4 -vf "transpose=1, fps=30" -vcodec libx265 -crf 10 -acodec copy output.mp4

Other codes that i've used were also gave me same result:

ffmpeg -i input.mp4 -vf "transpose=1, fps=30" -vcodec libx264 -acodec copy output.mp4
ffmpeg -i input.mp4 -vf "transpose=1" output.mp4
ffmpeg -i input.mp4 -vf "transpose=1, fps=30" -acodec copy output.mp4
ffmpeg -i input.mp4 -vf "transpose=1" -crf 10 -b:v 600k output.mp4

version:

ffmpeg 2.6.8

I think problem is the youtube-dl, This is the video i'm trying to rotate: https://www.pscp.tv/22dakika/1ZkKzlXkOMoJv

UPDATE

The problem was a broken video. I removed the first 30 secs of the video. After that, rotation process gave me a succesful output.

sound

1 Answers

  1. Update your ffmpeg and then run:

    ffmpeg -i input.mp4 -c:a copy output.mp4

    It will automatically properly rotate the video.

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