[FEAT] Add support for ALSA

[carrotgeball]

Is this a new feature request?

• I have searched the existing issues

Wanted change

Add ALSA support for hardware sound device recording

Reason for change

For capture card streaming, current ffmpeg already have v4l2 and opus support, but no support to capture sounds which included with many capture cards.

Proposed code change

I recompile a ffmpeg with --enable-alsa and libasound2-dev installed, it works just fine.

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[aptalca]

@carrotgeball Can you give this image a try and let us know if it works? It has alsa support
ghcr.io/linuxserver/lsiodev-ffmpeg:6.1-cli-pkg-a715c0ab-dev-23abf40371b1b63408bfe31ba26b76bb684a121f

Thanks

[carrotgeball]

@carrotgeball Can you give this image a try and let us know if it works? It has alsa support ghcr.io/linuxserver/lsiodev-ffmpeg:6.1-cli-pkg-a715c0ab-dev-23abf40371b1b63408bfe31ba26b76bb684a121f

Thanks

it works :)