On Mon, 2015-01-05 at 18:45 -0500, Marcus Johnson wrote: > Wait, by HBR are you referring to DTS-HD HBR? because the DTS decoder > doesn't support really anything beyond Core (aka old fashioned dts)
I may be wrong, I think the *precise* definition of IEC 61937 HBR is (IEC 60598 frame rates at above 192kHz). * Every IEC 60598 frame consists of 2 subframes (besides IEC 61937 uses subframe to carry 16-bits of samples). * Thus, bitrate = 192k * 2 subframes * 16 bits = 6.144Mbps This conforms to the definition that >6.144Mbps bitrate is HBR. In order to get audio stream passing HDMI (there are logics inside HDMI hardware), there are 2 ways: -- For non-HBR (below 192k IEC 60598 frame rate), HDMI logic (hardware) encodes audio stream (input: normal PCM, output HDMI Audio Sample Packet). -- For HBR, by HDMI passthrough (passthrough above encoding done by hardware) (and encoding is supposedly done by ff_spdif_muxer), and this is what I am trying to verify. But, my HDMI receiver only supports TrueHD, DTS-HD Master via HDMI interface. But, it seems Dolby Digital Plus (E-AC3), (supports up to 15 full-bandwidth audio channels at a maximum bitrate of 6.144 Mbit/s)(quote from wikipedia), thus it is NOT HBR. Thanks. _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user