Uploading mp4 to vimeo was recommended with the following settings -
https://vimeo.com/help/compression
Getting ffmpeg to work with libfaac on Fedora -
http://tinkerance.blogspot.com/2012/11/getting-ffmpeg-to-work-with-libfaac-on.html
My command line for capture -
ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 30 -s 1024x768 -i :0.0 -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 video-output/screen-capture-output.mkv
My command line for converting to mp4 -
ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 30 -s 1024x768 -i :0.0 -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 video-output/screen-capture-output.mkv