[mythtv] DVD playback issues, patch

[Davin McCall]

Hi,

> Playback start with roughly correct speed - but I can clearly notice 
> that speed is circulating around x1.0 with period of approx half sec.

you mean that the speed is varying between about 0.5x and 1.5x, right?

I've checked, there's no problem with lack of initialisation. More 
likely the re-syncing is now too agressive and is casuing the video to 
bounce between being too fast and too slow.

You could try changing this line in NuppelVideoPlayer.cpp:
     avsync_avg = (avsync_delay + (avsync_avg * 3)) / 4;
To something like:
     avsync_avg = (avsync_delay + (avsync_avg * 7)) / 8;

If that doesn't help: If I sent you a modified NuppelVideoPlayer.cpp 
would you be able to run it for me and give me the log?

Also, what video output are you using - Xv, OpenGL, vdpau, .. ??

Thanks

Davin


On 15/11/09 05:20, Warpme wrote:
> Davin,
>
> I tested little last version of Your patch (on 0.22-fixes 22804).
> Well  -I would say is solves issue partially.
>
> Without patch:
> In my case since beginning of my swtich to 0.22 (I switch at 22512 
> level) I constantly have problem with playback speed in some of my DVDs.
> Problem is: playback is to fast (10sec playback plays 14-15sec of movie).
> I all cases however I'm able to return to proper by changing speed 
> from x1.0 to any else value and return back. After this DVD is playing 
> OK.
>
> With Your patch:
> Playback start with roughly correct speed - but I can clearly notice 
> that speed is circulating around x1.0 with period of approx half sec.
> Overall averaged speed is 1.0, but speed circulation is clearly 
> noticeable.
> But changing speed from x1.0 to any else value and return back causes 
> tha all starts to be OK (speed is OK, movements are fluent).
>
> All this suggest me that issue is maybe result of playback speed 
> variable initialization issue or something similar...
>
> br
>
>
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