Sean, I noticed that libavdevice.58 is missing in your list of links that need to be created manually! With this addition, your script works with Mathematica 13.0.1 under MacOS x86. Many thanks :)

Thanks! That also worked on a M1 Mac! It seems some of the calls from Mathematica to FFmpeg are hardcoded and not dynamic, that's unfortunate.

Thank you very much!

I saw different approaches to using FFmpeg on a M1 Mac, but none have worked so far. With 13.0.1 and brew install ffmpeg or brew install ffmpeg@4 Mathematica refuses to find the FFmpeg installation. It's installed in /opt/homebrew/Cellar and links are present in /opt/homebrew/bin/ and /opt/homebrew/lib/. I think M13.0.1 is fully compatible with ARM Macs so a x86-installation shouldn't be necessary, right?

/usr/local/Cellar sounds right but I have no idea why it would have put the symlinks in usr/local/opt/ffmpeg. When I tried this on a m1 mac last week arch -x86_64 /usr/local/bin/brew install ffmpeg created symlinks in /usr/local/lib like brew usually does. I'd be curious to see what arch -x86_64 /usr/local/bin/brew reinstall ffmpeg looked like in terms of install locations in the brew output.

Thank you so much for confirming this, I just wanted to make sure that the typical arch -x86_64 /usr/local/bin/brew install ffmpeg still works as expected.

I have the x86 homebrew in /usr/local and the ARM homebrew in /opt/homebrew

ls -ls /usr/local/lib/libavc*

is giving nothing :-) It is empty.

But I have the lib here: /usr/local/opt/ffmpeg/lib/libavcodec.58.91.100.dylib

And by creating the symbolic links to that place, everything is working.

At least, I see the list of codecs in

$VideoDecoders

and

FFmpegTools`$SystemFFmpegQ

is returning True.

It is not a problem for me. But I wanted to share just in case other people may have similar issues. I have not yet tested if the encoding is working.

I have followed your instructions to install the x86 version of home-brew and ffmpeg. I have done nothing special.

I have /usr/local/bin/brew. Don't know how to check if this executable is x86 or arm.

I don't have the symlinks in /usr/local/lib pointing to ffmpeg in Cellar.

But I do have ffmpeg in /usr/local/Cellar.

The /usr/local/opt/ffmpeg is a symlink to the version in /usr/local/Cellar.

So in short : it looks like /usr/local/lib was not used but instead it is /usr/local/opt/ffmpeg.

I do see some codecs in /usr/local/lib like libvorbisenc.a

But the libavcodec.58 libavformat.58 libavutil.56 libavfilter.7 libswscale.5 libswresample.3 are in the ffmpeg folder.

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