On Thu, Jan 07, 2016 at 14:28:29 +0000, Carl Eugen Hoyos wrote: > Moritz Barsnick <barsnick <at> gmx.net> writes: > EAC3, TrueHD and DTS-HD are only supported via HDMI, > AC3 and DTS (without HD) work both via HDMI and TOSLINK.
Interesting! > > Now I need to know how to output raw DTS or raw SPDIF > > to my PC's SPDIF dongle. > > See my earlier email in this thread, replace eac3 > with ac3 and 192k with 48k and choose the correct > alsa device, could be hw=0.1. I got it to work as such (generator and encoder piped to an extra command for feeding alsa): $ ffmpeg -f lavfi -i sine=200 -f lavfi -i sine=390 -filter_complex amerge -map "[a]" -c:a dca -strict experimental -ac 2 -ar 48k -f spdif - \ | ffmpeg -f s16le -ac 2 -ar 48k -i - -c:a copy -f alsa hw:2,0 SPDIF over TOSLINK only supports up to 48k sample rate? I thought I had read differently, but my memory is really bad (see below). My audio player recognizes this as "dts". Funnily, if I use "ac3" as ffmpeg's codec in the first command, it also plays fine, but *doesn't* say "Dolby Digital" as it usually would. (Neither if I use six channels via amerge=inputs=6.) *sigh* Whatever, should be fine all the same. It *must* be Dolby. If I feed the "ffmpeg SPDIF to ALSA feeder" with: $ ffmpeg -i Test\ AC3\ v2.0.avi -map 0:a -c:a copy -f spdif - it does say "DD Digital" on the display. Must be something in the stream AC3 perhaps? Thanks so much! By this, I can also confirm that MP3 or MP2 in SPDIF doesn't work for me, which was the whole point of this experiment. Moritz _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
