Add mpeg2 hardware encoding with QSV
I was amazed it performed >600 fps on HD media files, and correctly streamed to my phone's bubbleupnp client (I had to manually set 16:9 aspect ratio - might want to take a look at the h264_qsv ffmpeg command! DAR in the profile doesn't help). However the Panasonic wouldn't accept the content. I tried with mpeg and mpegts containers. For some reason, transcoded h.264 content cannot be played. UNtranscoded h.264 files can be played, though, as can mpeg2video.
So, for now, I'm relegating all video transcoding to mpeg2video, which works fine, at the cost of 2 cores at 50% usage. I'd like to test the processor's ability to hardware encode this format. The FFMPEG version I pulled supports this, according to their hardware accel page and the -encoders option shows mpeg2_qsv available. I followed all the steps https://forum.serviio.org/viewtopic.php?f=5&t=22512 to get acceleration working right. Can mpeg2_qsv be implemented in an update as well?