FFmpeg

Usage

FFmpeg is used to record and play back audio. Currently MP3 is being used but OGG and OPUS are being considered.

Targets

Architecture

• x86
• ARM

Bits

• 32
• 64

OSes

• Darwin (OS X)
• Linux Variants
• Windows

Commands

Record

Darwin (OS X)

ffmpeg -hide_banner -nostats -loglevel error -f avfoundation -i <input_device> -y <output_file>

Linux

ffmpeg -hide_banner -nostats -loglevel error -f pulse -i <input_device> -y <output_file>

Windows

ffmpeg -hide_banner -nostats -loglevel error -f dshow -i audio=<input_device> -y <output_file>

Play

ffplay -hide_banner -nodisp -nostats -autoexit -ss <time_secs> <input_file>

List Devices

Darwin (OS X)

ffmpeg -hide_banner -nostats -f avfoundation -list_devices true -i ""

Linux

pactl list short sources

Windows

ffmpeg -hide_banner -nostats -f dshow -list_devices true -i dummy

Links

Compile

• https://trac.ffmpeg.org/wiki/CompilationGuide
• https://github.com/nwjs/nw.js/issues/4595

Configure

• https://github.com/FFmpeg/FFmpeg/blob/master/configure
• https://stackoverflow.com/questions/8403229/ffmpeg-api-compiling-with-specific-formats

Linux

• https://github.com/markus-perl/ffmpeg-build-script

Arch

• https://web.archive.org/web/20140107072548/http://superninjaburger.com/wordpress/?p=97

Raspberry Pi

• https://forums.raspberrypi.com/viewtopic.php?t=53936

Windows

• https://github.com/rdp/ffmpeg-windows-build-helpers
• https://superuser.com/questions/1425350/how-to-compile-the-best-version-of-ffmpeg-for-windows

Errors

• https://askubuntu.com/questions/713624/how-do-i-get-rid-of-ffmpeg-warning-library-configuration-mismatch-message
• https://superuser.com/questions/1273204/ffmpeg-library-configuration-mismatch