[linux-dvb] Display artifacts with VisionPlus (Twinhan) DVB-T card
nsabbi at tiscali.it
Sat Mar 12 10:17:24 CET 2005
Manu Abraham wrote:
> Matthew Phillips wrote:
>> Hello all, I'm having some problems with some Australian DVB-T
>> channels, which I'm hoping someone here might have a clue about. The
>> SD pictures I'm getting on some channels have, either at the top or
>> bottom of the picture, a line of blank pixels which sometimes have
>> some white streaks.
>> I've attached an example, the rogue pixels are at the top left
>> (hopefully attachments are handled on this list). Sometimes this
>> blank line has a steady set of white pixels as in the example, which
>> flicker irritatingly :/ Sometimes the pixels spontaneously go away
>> only to pop back up again later.
>> This happens on channel 9 and 10 here in Adelaide, but not for 2, 7
>> or SBS. I'm seeing this both in MythTV and from dvb_stream pumped
>> into mplayer, so I'm fairly sure it's the DVB backend that's the
>> problem. I've tried fiddling with all the various tuning params, to
>> no avail.
>> Anyone got any ideas what else I could try to isolate the problem?
> The driver does not handle any image processing.. It is done by
> mplayer in your case.. maybe Nico can comment better on the video
> artefact in the picture. or maybe the Mplayer list also, but please do
> post back whatever solution you have done to achieve this on Mplayer
> on this list.
even better: upload the sample to
ftp://www.mplayerhq.hu/MPlayer/incoming and post the filename, please
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