I would be interested in the transcode parameters that other people are using.
We switched from the default 720p / 2 Mbit (ouch!) to 1080p with a default constant rate factor of 24.
The resulting quality is pretty close to awesome, even though the responsiveness when switching single frames is reduced a lot. That’s why we do the HQ transcodes only for certain pipeline steps.
Here are our video params used so far (audio unchanged). Was struggling a bit with the webm settings though:
-vcodec libx264 -pix_fmt yuv420p -crf 24 -tune zerolatency
-pix_fmt yuv420p -vcodec libvpx -crf 8 -b:v 8M
I tried some other settigs with mp4 bitrates of 8Mbit/s, but this suffered only quality wise and did not improve the frame skip perfomance.
Would love to hear about your experiences.