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→Extract single audio channel from video file
<code style="background-color:#000; color:#fff; padding:1px 3px;">ffmpeg -i input.mp4 -af "pan=mono|c0=c0" output.wav</code>
<code style="background-color:#000; color:#fff; padding:1px 3px;">ffmpeg -i input.mp4 -af "pan=mono|c0=c0" output.wav</code>
<code>-af "pan=mono|c0=c0"</code> extracts a single channel from the file. Use <code>c0=c0</code> for left channel, <code>c0=c1</code> for right channel.
<code>-af "pan=mono|c0=c0"</code> extracts a single channel from the file. Use <code>c0=c0</code> for left channel, <code>c0=c1</code> for right channel (assuming source audio is stereo).
===Add audio to video===
===Add audio to video===