Hi "Rene H. Larsen" a écrit : > > I've set up XFree86 4.0.1 to load the v4l module and I've compiled > xawtv against X4 libraries so that xawtv will use the Xv extensions to > perform YUV transformation on the graphics card, and stretching when > in fullscreen mode. The former seems to work fine, as xawtv is > clearly running in Xv mode since there are no flashes or delayed > updates while moving or resizing the xawtv window. > > When I switch to fullscreen mode, however, I get a thick black border > around the image, something I hoped could be avoided through the use > of hardware scaling. My graphics card/driver combination (see notes > below) does support hardware scaling, which I frequently use for > fullscreen MPEG playback via SMPEG and SDL. Furthermore, debug output > from xawtv agrees that hardware scaling is available, so why is it not > used for fullscreen mode? Maybe because xv can't put your WinTV in yuv capture mode. You can recompile v4l_drv.o with #define DEBUG(x) (x) in xc/programs/Xserver/hw/xfree86/drivers/v4l/v4l.c and look for something like (II) v4l: init start (II) v4l: /dev/video0 ok (II) v4l: kernel driver supports yuv422. (II) v4l: screen driver supports 2 yuv formats (0x87547b0) (II) v4l: yuv format: YUY2 (II) v4l: matching format found, offscreen yuv enabled. (II) v4l: yuv format: UYVY in the startx log didier
