instead of -audio-device='.'īut I tried to do a trick in smplayer by setting the audio driver output to 'user defined' and let it empty and setting the additionnal option I talked before -audio-device='alsa/hdmi:CARD=HDMI,DEV=2'īut doing this, I didnt get any sound, even though the mpv cmd line launch by smplayer seems ok : the -ao argument was no more present and the -audio-device='.' one was. I known that currently smplayer with mpv uses -ao=. With smplayer (16.4.0), i wasn't able to obtain the same result. The AVR was decoding a DTS compressed stream instead of PCM, meaning the passthrough was correctly done. SMPlayer is a free video and audio player for both Windows and Linux that allows you to play almost all media files without having to install additional codecs. Turn on the device you want to connect to the TV, and then gently insert the matching end of the cable into its HDMI port. (of course card and device number depend on the hardware) Using mpv by command line (0.16.0), I was able to trully passtrough by adding -audio-device='alsa/hdmi:CARD=HDMI,DEV=2' instead of -ao=alsa:device=.

On a DTS audio file, my AVR was still receiving uncompressed PCM stream. Wasn't enough to have compressed audio passthrough HDMI. With your PC connected to your HDMI TV/monitor, use the Windows key + P keyboard shortcut to launch the Windows ‘Project to a second screen’ menu. In my case adding the custom option : -audio-spdif=dts-hd,truehd,eac3,ac3

Smplayer stops with hdmi tv