Should I attempt to do "sudo chmod g+w /usr/local/lib"?
As far as I am aware, it allows me to read and write on files.
here is the Installing process if you need it:
Roberts-iMac:~ iTrebor$ brew install ffmpeg
==> Downloading https://homebrew.bintray.com/bottles/ffmpeg-2.7.2_1.yosemite.bot
Already downloaded: /Library/Caches/Homebrew/ffmpeg-2.7.2_1.yosemite.bottle.tar.gz
==> Pouring ffmpeg-2.7.2_1.yosemite.bottle.tar.gz
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink lib/libavcodec.56.41.100.dylib
/usr/local/lib is not writable.
You can try again using:
brew link ffmpeg
==> Caveats
FFmpeg has been built without libfaac for licensing reasons;
libvo-aacenc is used by default.
To install with libfaac, you can:
brew reinstall ffmpeg --with-faac
You can also use the experimental FFmpeg encoder, libfdk-aac, or
libvo_aacenc to encode AAC audio:
ffmpeg -i input.wav -c:a aac -strict experimental output.m4a
Or:
brew reinstall ffmpeg --with-fdk-aac
ffmpeg -i input.wav -c:a libfdk_aac output.m4a
==> Summary
🺠/usr/local/Cellar/ffmpeg/2.7.2_1: 207 files, 43M