[mythtv-users] unresolveable ghosting ?

[Gary Dawes]

James Meyer wrote:
> On Sunday 15 February 2004 01:49, James Meyer wrote:
> 
>>On Saturday 14 February 2004 10:45, J. Donavan Stanley wrote:
>>
>>>James Meyer wrote:
>>>
>>>>Thank you for responding, I thought I had included everything but I
>>>>guess a little bit of important information was left out.
>>>>
>>>>For the firmware I have attempted to run
>>>>    1) pvr250_17_21226.exe <= but it would never init both cards
>>>>successfully 2) pvr250_17_21288.exe  <= currently running this
>>>>firmware.
>>>>
>>>>Below are the DNR settting I am attempting to use the following command
>>>>will give an error.
>>>>/usr/local/bin/test_ioctl --set-codec-params=dnr_mode=0,dnr_temporal=0
>>>>
>>>>ioctl: IVTV_IOC_S_CODEC
>>>>ioctl: IVTV_IOC_G_CODEC failed
>>>
>>>hmmm you might need to specify the device on the command line though it
>>>should default to /dev/video0.  Are your ivtv drivers loaded when you
>>>try this?  What does "test_ioctl -a" say?
>>>22037
>>>I'm currently using 22037 for my firmware which has cleared all of my
>>>stability issues it might help with your problem...
>>>_____________
>>
>>Well I had a spare harddrive so I downloaded fedora and followed Jarod's
>>guide.  I also updated to firmware 22037 and added   kerneldeint,denoise3d
>>to the filter list the problem is reduced but still is there.
>>
>>Adjusting my capture rate to full size actually made the problem worse.
>>
>>On the plus side test_ioctl -set-codec-params=dnr_mode=0,dnr_temporal=0  
>>now works.  Attached is the output of test_ioctl-a
>>
>>-james
> 
> 
> 
> Problem has been fixed, I guess it is was not unresolvable afterall.
> 
> THANKS to all those that helped.  If anybody is interested here are the things 
> done to resolve my problem.
> 1) set my display size to 848x480 @60Hz  (native resolution of plasma)
>    Previously I was running at 720x480 at 60hz,  changing this helped the most.
> 2) replace the nvidia 5200 with a matrox g400
>     The matrox just has better quality VGA output.
> 3)  Mythsettings
>     -Raise the bitrate to at least 8000
>     -uncheck jitter reduction
>     - uncheck deinterlace playback,  instead use the kerneldeint  filter
>     - uncheck experimental av sync, this is not needed because I am no longer
>           using the nvidia card
> 4)  upgrade pvr firmware to  22037
> 
> 
> -james
> 
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I had a similar problem with ghosting /blurring with analogue cards - I 
found by chance that if I turned down the vertical resolution, and not 
txhe horizontal that it vanished. I'm currently running 576x288 Mpeg4 at 
3300 bitrate, and the quality is very good. It's almost true 16:9 as 
well so the aspect looks correct on my tv.