[mythtv-users] V4L video capture image poor
paul at wilsononline.id.au
Thu Mar 2 04:16:19 UTC 2006
I'm using a DVB-T hybrid pci card (DNTV pro) and the Composite stream,
my video stream is pretty poor , ie I'm getting un refreshed artefacts
"blocks" all over the screen
ie where there is no movement it seems to be no refreshing that part of
Note I get a pretty good picture with TVTIME but not with MythTV.
Is there something I can do do clean up the image?
2006-02-28 21:46:31.815 TVRec(7): Changing from None to WatchingLiveTV
2006-02-28 21:46:31.904 Unknown video codec
2006-02-28 21:46:31.928 Please go into the TV Settings, Recording
2006-02-28 21:46:31.938 setup the four 'Software Encoders' profiles.
2006-02-28 21:46:31.942 Assuming RTjpeg for now.
On 1/03/2006 3:11 AM, Chris Pinkham wrote:
>> Can anyone tell me where the Aspect ratio for "Composite0" is set?
>> My DVB is ok, but the analog capture via Composite is not displaying
>> 16:9 .. looks like 4:3 but I can't find where this is set for this device.
> The software encoder (NuppelVideoRecorder) assumes 4:3 input and there's
> currently no way to change it via a setting.
> If this is the only card you have and you want to force it via a hack to
> the source code, you can edit mythtv/libs/libmythtv/NuppelVideoRecorder.cpp
> and search for "video_aspect = 1.33333;" in
> NuppelVideoRecorder::NuppelVideoRecorder() and change that to
> "video_aspect = 1.77777;" to force 16:9 aspect ratio in the .nuv file.
> It wouldn't be that hard for someone to add support for an Aspect Ratio
> setting for analog capturecards to use for what you're describing.
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