[mythtv-users] Playing back MPEG-2 files with time stretching on XBox in 0.19

[kanetse@gmail.com]

On 2/23/06, kanetse at gmail.com <kane.tse at gmail.com> wrote:
> I have a master backend running 0.19 with a PVR-250/PVR-500.  I watch
> the recordings on an XBox remote frontend.  I notice that whenever I
> playback recordings at 1.5X or higher, it seems to stutter with
> prebuffering pauses every so often.  For now, I'm getting around this
> by drastically decreasing the encoding rate for my recordings or
> transcoding the recordings to a smaller file size.
>
> When I was previously running 0.18 with a bttv card, I never had
> stuttering problems.  At that time, the PVR-250 was a third tuner in a
> slave backend, so it wasn't used that often... but I seem to remember
> being able to playback the MPEG-2 files from the PVR-250 at 1.5X
> without any stuttering.
>
> Are any other users watching MPEG-2 recordings on an XBox with time
> stretching and 0.19 noticing stuttering/pre-buffering pauses?
>

I guess no one is seeing this problem?  One thing that is different
between the PVR-250 and the PVR-500 recordings is the presence of the
closed captions/VBI data that is embedded into the MPEG-2 file by the
IVTV drive (I'm using 0.4.3).

When I'm watching a show with captions (thus recorded by the PVR-250),
I will see closed caption letters flash all over the screen for a very
brief instant.  Could it be related to some kind of issue in decoding
the captions?