2015-04-09, 09:56
optical is limited in all ways, 2 channels pcm only, for surround one needs to go the ac3 (transcode) route or can use dts (if av). I personally decode my audio, i am happy about the new ffmpeg dts-hd decoder. Sync of bitstream audio is far more difficult than using decoded pcm audio that you can resample a minimal bit from time to time.
