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ffmpeg [2025/04/10 23:33] – note on what copy means. rjtffmpeg [2025/07/22 01:10] (current) – [Editing] Rotation rjt
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 <code>ffmpeg -i [input].webm -acodec copy -vcodec copy [output].mkv</code> <code>ffmpeg -i [input].webm -acodec copy -vcodec copy [output].mkv</code>
 +
 +A more compact way is to use ''-c'', which will copy over all streams (there's also ''-c:a'' (audio) ''-c:v'' (video) ''-c:s'' (subtitles)…:
 +
 +<code>ffmpeg -i [input].webm -c copy [output].mkv</code>
  
 So if you wanted to copy the video stream and just reencode/change the audio, for example: So if you wanted to copy the video stream and just reencode/change the audio, for example:
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 === Rotation === === Rotation ===
-Rotate 90°.+Rotate 90°. This will reencode the video.
  
 <code>ffmpeg -i inputfile.ext -vf "transpose=1" outputfile.ext</code> <code>ffmpeg -i inputfile.ext -vf "transpose=1" outputfile.ext</code>
 +
 +To rotate -90° is ''transpose=2''.
 +
 +(The easiest, tidiest way to rotate a phone video is to just edit the metadata with [[exiftool]])
  
 === Trimming === === Trimming ===
ffmpeg.1744292024.txt.gz · Last modified: 2025/04/10 23:33 by rjt