xcaptest is way to dumb to do what you are trying to do. It will simply match the capture format to your X Windows screen format. It seems your driver doesn't support V4L2_PIX_FMT_GREY. Maybe you can look at the source and find out if it does. If it doesn't, capture a planar YUV format and ignore the chroma bits. Bill. Valdir Grassi Jr wrote: > > Please, I'm using the matrox meteor driver available on the k-team web page. > I could compile it in a red hat 7.1 (kernel 2.4.2-2) and I could run the > vcat application without problem, but the xcaptest application is not > showing the image properly. > > The image shown is distorced and mainly blue and green. I would like to > display a grayscale image since my camera is b&w. > I've tried to change the VID_PIX_FLAGS to V4L2_PIX_FMT_GREY but the xcaptest > still tries to display a "BGR4" image. > > Another problem I've found is when I try to change the parameters of > xcaptest using the menu options. > When I try to change the size using the menu, an error message "S_FMT in > capture_size: Invalid argument" is displayed in the console. When I try to > change the Standard, the message is "S_STD in capture_std: Invalid > argument". > > I tried to compile vcat using V4L2_PIX_FMT_GREY instead of > V4L2_PIX_FMT_BGR24. When the new vcat is executed, it returns the error > "S_FMT returned error 2". > > I would be glad if someone could give me some hint to solve this problem. > > Valdir > > _______________________________________________ > Video4linux-list mailing list > Video4linux-list@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/video4linux-list
