We're planning to upgrade MistProcAV.
MistProcAV is the encoder based on libAV that you can include in MistServer builds, but it has a downside: you'll need to compile your own MistServer on your server. Now this is actually quite easy once you know the proper steps. However we still felt somewhat limited with this usage.
We have planned quite an overhaul for MistProcAV, adding several other video codecs (HEVC, AV1 ,VP9), Audio codecs (Flac, Vorbis, Mp3) and - more importantly - making it easier to include in our generic Linux builds.
Creating a static library that works for every build of Linux is going to be a bit of a challenge, but we're confident that we can succeed, seeing as we're not looking for the full capabilities of libAV itself. In the worst case scenario we can at least give a list of OS's that will and will not work with these builds.
Another good reason to do this is so we can set the version of libAV. This way we know everyone is getting the same quality and this will help us find issues more easily. Let's not forget it ties together well with the new compositor we're going to release.
We're honestly not far off, however I don't expect it to be in the next version - perhaps the version after.