[mythtv-users] Jittery, jerky, stuttering video (yes, again)
Roger.Little at mchsi.com
Roger.Little at mchsi.com
Tue Jul 20 12:06:43 EDT 2004
I absolutely love MythTV (and KnoppMyth) but have 1 issue that is really
bothering me. During MythTV playback (and mplayer playback of Myth (or SageTV)
material) I have jitter problems like what has been described before. DVD
playback works perfect in Xine and MPlayer with no jitter. Here are my system
specs:
KnoppMyth R4V4.1
Asus A7N8X-E Deluxe Nforce2 motherboard with MCP-T
AMD 2600+ Barton
512MB PC3200
120GB 7200 RPM drive (with dma enabled)
Hauppauge PVR-250
GeForce FX5200 128MB (latest drivers, 6106)
Infocus X1 DLP projector at 800x600
I have tried using all combinations of the following options and nothing helps:
Deinterlace playback
Jitter reduction
Experimental AV sync
xvMC Decoding
If I change the refresh rate from 60.32 Hz to 59.94 Hz the jitter is very
different, but still very annoying. Here is an example, where "-" is normal
playback and "+" is stuttering playback:
60.3 Hz -> --+--+--+--+--+--+
59.94 Hz -> ---------++++++++++-----------+++++++
I have the same problem on Windows with SageTV and BeyondTV but can make the
problem go away by enabling DXVA (Direct-X video acceleration) and HWMC
(Hardware Motion Compensation) in the mpeg decoder. But Myth blows away SageTV
and BeyondTV by far and is what I want to use if possible.
I have read through all posts on this list and on the KnoppMyth message board
and have tried all suggestions that I could find. What else can I try? Maybe
downgrade the video drivers? Maybe the jitter reduction and Experimental AV
sync doesn't work with the latest NVidia drivers? Or could it be NForce2
sound-related? Any help will be greatly appreciated.
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