[mythtv-commits] Ticket #7426: Static noise from 96kHz/24bit audio files in MythMusic
MythTV
mythtv at cvs.mythtv.org
Mon Oct 26 22:36:02 UTC 2009
#7426: Static noise from 96kHz/24bit audio files in MythMusic
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Reporter: Paul Hooper <paul.a.hooper@…> | Owner: stuartm
Type: defect | Status: infoneeded_new
Priority: minor | Milestone: 0.22
Component: MythTV - Audio Output | Version: 0.22rc1
Severity: medium | Mlocked: 0
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Comment(by Paul Hooper <paul.a.hooper@…>):
Thanks for the reply, sample attached. I was wrong about the right channel
being fine in my original post, the audio is there but it is stretched
(played back at approx. half speed). Left channel is just static.
I had a quick look at the myth ALSA audio output code and I can see the
max supported rate is 48kHz. There seems to be some code for dealing with
24bit sample format and endianness. aplay deals with 24 bit audio using
blocks of three bytes. You guys know all this anyway. My C++ has gone from
rusty to practically non existent over the last few years, so I'm a bit
out of my depth here.
16/20/24-bit and 44.1k/48k/96k/192kHz sample rate support is included with
many realtek ICs, even those on cheap motherboards like mine! I'm guessing
this is because of new codecs like Dolby TrueHD and DTS-HD using these
rates and formats. Are there any existing plans to support these new
formats?
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Ticket URL: <http://svn.mythtv.org/trac/ticket/7426#comment:3>
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