[mythtv-users] "Videos" Play too fast and choppy

[Nowhere]

Thanks for the help. Unfortunately it didn't help. At least part of it
didn't help. I turned on the "Use Video As Timebase" option and when I
play a video using the Video selection I lose the video (black screen).
If I turn it off the video comes back.  I can however hear the audio and
it is still too fast (chipmunk effect).

I should point out that the video is in sync with the audio at all times
so it is truly a playback speed issue.

In this case the video is a PVR-250 capture that was "transcoded" to
SVCD MPEG2 using nuvexport and played back with the video function from
the main myth screen. Playing the same video on a windows box with Media
Player 9 yields the correct speed.

I had deleted my transcoded videos and will have to transcode another to
see if these suggestions affect transcoded video but I am skeptical
since they play correctly in Windows.

I have always had the transcode options set to the same as the capture
settings (48000 sample rate for the audio). 

My system is as follows:
Athlon XP 2000+
MSI K7N2GL MB with nforce2 and GF MX440 onboard video and s-video out
512MB DDR Ram (single channel)
Seagate 80GB IDE HD
2x PVR-250
No name DVDROM
Myth 0.14 with no CVS or patching

Does anyone else notice too fast playback of AVIs or anything using the
Video function?

Thanks,

Eric


-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Joseph A. Caputo
Sent: Thursday, April 15, 2004 10:06 AM
To: Discussion about mythtv
Subject: Re: [mythtv-users] "Videos" Play too fast and choppy

On Thursday 15 April 2004 02:00, Nowhere wrote:
> Hi everyone,
>
> I have a twin PVR-250 system in a 512MB/Athlon XP 2000+/MSI K7N2GL
> system. Recordings made with the PVR-250s playback just fine.
> However, if I transcode to mpeg4, they playback too fast (video and
> audio) and very choppy when there is a lot of motion on the screen. I
> transcode at the same bitrate as the capture (2200 most of the time).
>
> If I copy a plain ole avi (DivX codec) from my windows box and play
> it from the "Videos" function, it also plays too fast.
>
> Anyone have any clue where to start? Let me know if you need more
> info about my system...

What happens if you enable "Use Video As Timebase" ?
(under Setup->TV->Playback)

You also might want to try making the audio sample rate in your 
transcoding profile the same as the sample rate of your original MPEG-2 
recordings.

Just guessing, here.

-JAC
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