jonis2006 schrieb: >> jonis2006 a crit : >>> Hello ! >>> >>> When I watching channels sometime I see color defects at the edges of >>> objects in the screen. >>> Here is screenshots which describing this problem. >>> >>> http://woody.on.ufanet.ru/001.vdr >>> http://woody.on.ufanet.ru/defect1.JPG (Pink lines near red color) >>> http://woody.on.ufanet.ru/defect2.JPG (Edges of circle with picks) >>> http://woody.on.ufanet.ru/defect3.JPG (Edges of circle with picks) >> It seems like artifacts I had while tuning TV-out registers on VT1622 >> (S-video output on EPIA M10k). >> * wrong color lines may be related to S-video ou Composite, or color >> conversion inside the TV encoder (VT1622) >> * edges in circles (or generally steps on diangonal lines) is related to >> vertical scaling that take place inside the TV encoder (some lines are >> dropped, and even the smoothing engine can add more obvious artifact on >> particular patterns only) >> >> Can you detail the outpu you use ? >> If using a TV encoder, you should adjust the scaling/color correcton >> that that place there. >> >>> In Mplayer I got same problem. >>> >>> Is this possible to fix ? >>> Maybe packed color (Packed YUY2) causes problem ? >>> To me it looks like YUV420 is the problem. U and V components (these components give the color) have only 1/4 (1/2 in X and 1/2 in the Y-direction) of the resolution of the Y component (which is the brightness). So obviously on edges there are some parts where the color doesn't change with the same resolution as the brightness. Mpeg2 videos usually are encoded using YUV420, if the video out uses YUY2, YUV420 is converted to YUY2.
Bye, Martin _______________________________________________ Softdevice-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/softdevice-devel
