[mythtv-users] Tried but still stuck with video jitter pvr-250.
anewbeginning2004 at hotmail.com
Sat Jan 24 12:11:41 EST 2004
I am at a total loss here maybe someone can help. I have tried a few things
to isolate the problem and it just seems that my software encoding is the
Leadtek Geforce 2 GTS 32 meg (for s-video output)
1.2ghz Duron with an Epox 8kta2 (yes a via KT133 chipset)
CPU temps belo 50'C
PSU Antec true power 380W
My Hdd hdparm -t /dev/hda comes out 41 kbits/sec and DMA is enabled
This is what I have done to isolate my problem unfortunately I find the
problem seems to be in my encoding/recording not my playback system. Here is
Drivers and SW being used:
MythTV CVS 1/4/2004
PVR-250 firmware 1.7 (used file pvr_17_21288.exe from Hauppauge siite)
nvidia driver-kernel 1.0.5328
Testing I have done:
After recording I used mplayer and Mythtv to play the recorded file on my
mythtv system using the s-video out to the TV. The jitter (bad) and picture
quality (good) are the same on playback.
I then transfered the file to another PC and using mplayer I viewed the
recording on my PC monitor (no TV out) and found the picture quality (good)
and jitter (bad) the same as when viewed on my mythTV box. Seems like this
rules out my playback system and the nvidia drivers not sure though.
Here is what I found with the record system and it does not seem to make
sence so my hope is that someone will have an idea as to what is wrong.
I tried different bitrate settings and all that does is change the picture
quality the jitter is equivalently bad at all settings. The following I am
reporting are all done with a bitrate setting of 6000 and a maximum of 15000
set using Mythtv menu. Mpeg2-PS and DVD steam was used also with the same
352x480 - absolutely horrible jitters so bad it stops at times and flashes a
480x480 - very bad jitter not usable
640x480 - jitter is quite obvious but usable
720x480 - about the same as 640x480 maybe a little worse hard to tell.
Any ideas and help appreciated.
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