Earlier quoted context omitted.
Ha! This is one of the reasons* Chrome ships with its own copy of ffmpeg which this fork decided was a bad thing. * the other being security updates for ffmpeg
It's a bad thing for Linux platforms, which should use the system version of ffmpeg; however, that's something much easier to solve when you're actually the Linux distribution, rather than a third party. Note that many of the changes in this fork come from the Debian packaging of Chromium.
I'd expect the distro ffmpeg to not need as much updating if you're only using it for local media that you trust. But Chrome's ffmpeg has to decode media from untrusted sources so it's important that security bugs get fixed ASAP.
[1] https://security.googleblog.com/2014/01/ffmpeg-and-thousand-...