technology/linux/audio_visual/ffmpeg.md
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@@ -31,3 +31,8 @@ adjust constant rate factor to lower bit rate
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```
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ffmpeg -i input.mp4 -vcodec libx264 -crf 20 output.mp4
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```
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+
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+### remove id3 tag image and metadata from audio file
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+```
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+ffmpeg -i input.mp3 -vn -codec:a copy -map_metadata -1 output.mp3
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+```