Hi Nicolas, On Monday 11 February 2008, [EMAIL PROTECTED] wrote: > Hello, > > I have a Philips SPC520NC web cam with usbid 0471:0334. > dmesg: > USB Video Class driver (SVN r177) > uvcvideo: Found UVC 1.00 device USB Video Camera (0471:0334) > > In egika i get only a small green/black picture with horizontal strips. > > luvcview gives me: > Unable to set format: 22. > Init v4L2 failed !! exit fatal > init_VideoIn failed
That's pretty normal as your device doesn't support MJPEG, which is the default frame format used by luvcview. > luvcview -f yuv works > > ffmpeg works only for a dark picture > else it stops: > The v4l2 frame is 608940 bytes, but 614400 bytes are expected > frame= 28 q=24.3 Lsize= 188kB time=0.9 bitrate=1647.3kbits/s This is caused by packet loss on the USB bus. ffmpeg shouldn't bail out but should skip the image instead. I still have a pending patch to drop incomplete frames in the driver, I'll try to integrate it in the near future. > each cam access make a new line in dmesg: > uvcvideo: device USB Video Camera requested null bandwidth, defaulting > to lowest. > skype works. Thanks for the report. Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
