atlury replied at 2016-5-14 04:58
does the VDPAU implementation support encoding of h.264?
No and AFAIK it will stay that way, because VDPAU was never meant to support encoding.
@lex replied at 2016-1-15 07:33
@Tokka,
I tried your conf without success, no hdmi sound output.
Since this has nothing to do with ...
Probably too late for you, but I had the same problem with no sound on HDMI, and solved it by addingao=alsa:device=to ~/.config/mpv/mpv.conf