Hi,

I'm one of the authors of ccextractor, a specialized tool for closed caption extraction. We finished AVC over TS a couple months ago and I'm fighting with AVC in MP4 now. Want to use Bento4 to do the heavy lifting with MP4, but so far my attempts to extract the NALs, etc, have been unsuccesful. Maybe someone with Bento4 experience would like to join the effort?

ccextractor homepage: http://ccextractor.sourceforge.net