I believe this is a subset of Audio-Video Production.
If you have a question about
broadcast, film, audio, music, or location recording techniques
editing, mixing, mastering, and distribution
signal processing in a production context (for highly technical questions about digital >signal processing, please visit Stack Exchange's DSP site)
asset management, media, and file formats
installation, configuration, and operation of software related to these topics
… then you’re in the right place to ask your question!
(From the AVP FAQ)
I think, AVP discusses more about creating/editing and not about trancoding video/audio and the complications involved in it.