[mythtv] DD5.1 passthrough disabled by timestretch?

[John P Poet]

On Mon, Jul 26, 2010 at 4:01 PM, Jean-Yves Avenard <jyavenard at gmail.com>wrote:

> Hi
>
> On 26 July 2010 18:03, John P Poet <jppoet at gmail.com> wrote:
> > I am using S/PDIF.  The source material is either from ATSC MPEG2 with
> > DD5.1, or HD-PVR H.264 with DD5.1.
> >
> > I will have to look for this "support multi-PCM option" option.  It
> > must not have been available at r24684, since this all worked fine
> > until upgrading to trunk this past weekend.  So, turning on "support
> > multi-PCM option" should re-enable:
> >
> > 5.1 -> decode -> timestretch -> re-encode 5.1 ?
>
>
> no..
>
> SPDIF doesn't support multi-channels LPCM, that option shouldn't be
> available in the settings anyway.
>
> If using spdif and playing 5.1 audio, it should be re-encoded into 5.1 AC3
> if not, it's a bug..
>
> >
> >
> >> If using a medium supporting natively the requested amount of channels
> >> (e.g. analog audio or HDMI or anything with the "multi-channels PCM"
> >> settings activated, the decoded audio data is sent as-is.
> >>
> >> Once you activate timestretch, it's activated forever. When you
> >> toggled it off, it is still activated, just with the stretch value of
> >> 1.0. That's how AVFD works, we didn't changed anything there. Not sure
> >> why this was done like this to start with. There's no real
> >> requirements anymore to do it that way, we could completely disable
> >> timestretch instead
> >
> >
> > My memory, is that it was done that way so turning timestretch on/off
> > would be seemless, instead of having a brief pause during playback.
> >
> >
> > Thanks JY,
>
> I'm currently overseas, with very limited amount of resources for
> testing... I'll try to investigate further asap.
>


Don't stress too much about it.  I would like to see it fixed, but it can
wait until you get home.  Enjoy your trip!

John
-- 
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mythtv.org/pipermail/mythtv-dev/attachments/20100726/12a05eb5/attachment.htm>