[mythtv] Re: [mythtv-commits] Ticket #798: Auto-disable AC3 passthru when using timestretch

John P Poet jppoet at gmail.com
Tue Dec 20 22:30:12 EST 2005

On 12/12/05, MythTV <mythtv at cvs.mythtv.org> wrote:
> #798: Auto-disable AC3 passthru when using timestretch
> ---------------------------+------------------------------------------------
>  Reporter:  doug at ties.org  |       Owner:  ijr
>      Type:  patch          |      Status:  new
>  Priority:  minor          |   Milestone:
> Component:  mythtv         |     Version:
>  Severity:  medium         |
> ---------------------------+------------------------------------------------
>  The attached patch (from John Poet originally, though I've updated it to
>  SVN 8235) disables AC3 passthru when using timestretch.  AC3 passthru is
>  re-enabled when you go back to normal playback speed.
> --
> Ticket URL: <http://cvs.mythtv.org/trac/ticket/798>
> MythTV <http://www.mythtv.org/>
> MythTV

Quick note on this patch...

If you are sending a Dolby Digital bitstream to your surround
processor, and changing the timestretch setting results in silence,
just pause the video for a split-second.

At least with my pre-amp, it gets confused when the data encoding
suddenly switches from Dolby Digital to regular old PCM.  Pausing the
video for a split-second, is enough for it to reset itself and process
the PCM audio data correctly.


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