[mythtv-users] "Videos" Play too fast and choppy
nowhere at cox.net
Sat Apr 17 00:04:29 EDT 2004
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
No name DVDROM
Myth 0.14 with no CVS or patching
Does anyone else notice too fast playback of AVIs or anything using the
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" ?
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
Just guessing, here.
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