Hi Herton, On Wednesday 03 June 2009 23:02:33 Herton Ronaldo Krzesinski wrote: > One webcam I have here exposes an invalid videostreaming interface > format, with trace=0x2 this output is shown on kernel log: > > USB Video Class driver (v0.1.0) > usb 3-7: new high speed USB device using ehci_hcd and address 5 > usb 3-7: configuration #1 chosen from 1 choice > uvcvideo: Found format YUV 4:2:2 (YUYV). > uvcvideo: - 640x480 (18.0 fps) > uvcvideo: - 320x240 (30.0 fps) > uvcvideo: - 160x120 (30.0 fps) > uvcvideo: - 352x288 (30.0 fps) > uvcvideo: - 176x144 (30.0 fps) > uvcvideo: - 1280x1024 (8.0 fps) > uvcvideo: device 5 videostreaminginterface 1 FORMAT error > uvcvideo: Found a Status endpoint (addr 82). > uvcvideo: Found UVC 1.00 device BisonCam, NB Pro (5986:0241) > uvcvideo: No valid video chain found. > > There is an invalid videostreaming interface format exposed, which > makes the webcam to fail to work as the error is treated as fatal, > even if we have already found a valid format.
Just for information, I have same camera (at least same idVendor/idModel), but kernel log is different. I have no error: Linux video capture interface: v2.00 uvcvideo: Found format YUV 4:2:2 (YUYV). uvcvideo: - 640x480 (24.0 fps) uvcvideo: - 320x240 (24.0 fps) uvcvideo: - 160x120 (24.0 fps) uvcvideo: - 352x288 (24.0 fps) uvcvideo: - 176x144 (24.0 fps) uvcvideo: - 1280x1024 (8.0 fps) uvcvideo: Found a Status endpoint (addr 82). uvcvideo: Found UVC 1.00 device BisonCam, NB Pro (5986:0241) input: BisonCam, NB Pro as /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/input/input10 usbcore: registered new interface driver uvcvideo USB Video Class driver (v0.1.0) Quality of BisonCam products seems very poor... -- Jérôme Pouiller (jezz AT sysmic DOT org) _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
