[MPlayer-users] Can mplayer bitstream HD audio (DTS DH MA/Dolby TrueHD) over HDMI?

[Julian Sikorski]

W dniu 06.04.2014 21:36, Reimar Döffinger pisze:
> On Sun, Apr 06, 2014 at 08:10:46PM +0200, Julian Sikorski wrote:
>> W dniu 06.04.2014 17:59, Reimar Döffinger pisze:
>>> This looks like you should probably try with -channels 6
>>> It seems like MPlayer ends up trying to downsample the compressed
>>> audio to 2 channels.
>>> However it seems obvious nobody tested it, so it's not too likely to
>>> work I'm afraid.
>>>
>>
>> You were right. Using -channels 8 allows the clip to play and sends data
>> over to AVR which is recognised as DTS-HD MA. I had to use the .asoundrc
>> file from
>> http://www.nvnews.net/vbulletin/showthread.php?t=157347
>> Unfortunately, the playback is very choppy: sound plays for a moment,
>> then it does not, and so on:
> 
> I seriously doubt I'll be able to help much beyond this point since
> I can't test any of this myself.
> Though I might get some ideas if you can give some additional
> information.
> E.g. does it play all audio, just with pauses, or does it actually
> drop parts of the audio?

The audio gets dropped.

> Does the receiver indicate in any way it has issues synchronizing or
> such?

The received just shows a blue led when getting HD audio and red one
when getting standard ac3/dts. The blue led glows solid

> Does the status-line "A:" counter increase smoothly or does it reflect
> the pauses?
> Or are the pauses too short to be noticeable there? Have a course
> estimate?

The pauses are less than a second each. TrueHD seems to work a tad
better than DTS HD MA.

> Probably a bit overkill, but possible a recording of the output
> might give some insights?

I will try to post one tomorrow.

> 
>> ======= WAVE Format =======
>> Format Tag: 8193 (0x2001)
>> Channels: 6
>> Samplerate: 48000
> 
>> AUDIO: 192000 Hz, 8 ch, iec61937le, 768.0 kbit/3.12% (ratio: 96000->3072000)
> 
> Hm, these sample rates/channels do not fit together.
> I don't know if ALSA even cares about that information though...
>