1.) I am able to play an mp3 file using mplayer and I get SPDIF (optical) data out of my Hifiberry Digi+. This great.
2.) I now want to play a video (.mp4) and expecting to see the video and hear audio as in step 1. But the video doesn't play correctly and definitely no audio.
3.) When I switch to a different player (omxplayer) the video plays perfectly but there is no audio. I don't think omxplayer supports I2S audio out.
4.) I'd like to get a basic system setup where I can play a video (mp4) and hear audio on my Hifiberry Digi+ & Raspberry Pi 3 setup. Any advice on this would be very much appreciated.