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cytopia / ffscreencast

ffscreencast - ffmpeg screencast/desktop-recording with video overlay and multi monitor support
MIT License
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Homebrew mac ffmpeg does not include libfaac #6

Closed NelsonMinar closed 8 years ago

NelsonMinar commented 8 years ago

Not a bug in ffscreencast, more of a heads' up: Homebrew on the Mac installs ffmpeg without libfaac by default, for license reasons. I believe your audio support assumes that codec is available. It's easy enough to fix in Homebrew with brew reinstall ffmpeg --with-faac.

(I was trying to use ffscreencast to record Mac system audio using the kernel extension Soundflower to provide an audio loopback device. Not working so far, but then Soundflower seldom works for me in any context!)

cytopia commented 8 years ago

This is a good point. libfaac is the default as can be seen in the config file ~/.config/ffscreencast/ffscreencastrc:

...
# Default audio output codec
# Alternatively: 'pcm_s16le'
OUTPUT_ACODEC="libfaac"
...

If sound is enabled (which it is not by default), ffscreencast should probably check if the desired codec is compiled into ffmpeg.

As the above output codec can be changed to whatever codec you want to use, I will probably need a more general solution.

Is there a list out there what output audio codecs can be used by ffmpeg?

NelsonMinar commented 8 years ago

I put a list of all the codecs my Homebrew copy has here: https://gist.github.com/NelsonMinar/54fd4bb1f239d49571b2

I think of MP3 as a ubiquitous option. AAC is preferable if available.

cytopia commented 8 years ago

I added the stuff to brew and it now required ffmpeg with with-x265 and with-faac. This should solve it