Hi Laurent, I tried the quirks=2 settings. The loading looks better but Motion returns a 640x480 picture whose content is completely black. It seems the Jpeg format used by this webcam is not supported. Ok, here we go:
I tried all of this with "echo 2 > ... quirks" dmesg: uvcvideo 4-2:1.0: usb_probe_interface uvcvideo 4-2:1.0: usb_probe_interface - got id uvcvideo: Found UVC 1.00 device USB2.0 PC CAMERA (18ec:3288) uvcvideo: Forcing device quirks 0x2 by module parameter for testing purpose. uvcvideo: Please report required quirks to the linux-uvc-devel mailing list. uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround. input: USB2.0 PC CAMERA as /class/input/input28 uhci_hcd 0000:00:09.1: reserve dev 7 ep81-INT, period 8, phase 4, 23 us usb 4-2: adding 4-2:1.1 (config #1, interface 1) usb 4-2:1.1: uevent drivers/usb/core/inode.c: creating file '007' usb 4-2: New USB device found, idVendor=18ec, idProduct=3288 usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 4-2: Product: USB2.0 PC CAMERA usb 4-2: Manufacturer: ARKMICRO Motion complains about the Jpeg format. I captured the binary stream of a single frame using "./capture_example -d /dev/video2 -c 1 -o > vid2.dump". This file has been attached to this mail, watching with an hexa editor, it actually doesn't look like Jpeg as there is not 'JFIF' string inside. [1] Thread 1 started [1] cap.driver: "uvcvideo" [1] cap.card: "USB2.0 PC CAMERA" [1] cap.bus_info: "0000:00:09.1" [1] cap.capabilities=0x04000001 [1] - VIDEO_CAPTURE [1] - STREAMING [1] Supported palettes: [1] 0: MJPG (MJPEG) [1] index_format 2 Test palette MJPG (640x480) [1] Using palette MJPG (640x480) bytesperlines 0 sizeimage 614400 colorspace 00000000 [1] VIDIOC_G_JPEGCOMP not supported but it should be (does your webcam driver support this ioctl?) [1] found control 0x00980900, "Brightness", range 0,255 [1] "Brightness", default 123, current 123 [1] found control 0x00980901, "Contrast", range 0,255 [1] "Contrast", default 160, current 160 [1] found control 0x00980902, "Saturation", range 0,255 [1] "Saturation", default 140, current 140 [1] found control 0x00980903, "Hue", range -128,127 [1] "Hue", default 0, current 0 [1] found control 0x00980910, "Gamma", range 1,16 [1] "Gamma", default 8, current 8 [1] found control 0x00980913, "Gain", range 0,65535 [1] "Gain", default 16, current 0 [1] mmap information: [1] frames=4 [1] 0 length=614400 [1] 1 length=614400 [1] 2 length=614400 [1] 3 length=614400 [1] Using V4L2 [1] Resizing pre_capture buffer to 1 items Not a JPEG file: starts with 0xb2 0x10 [1] Resizing pre_capture buffer to 3 items Not a JPEG file: starts with 0x55 0x9b [1] Started stream webcam server in port 8082 Corrupt JPEG data: 1 extraneous bytes before marker 0xd9
vid2.dump
Description: Binary data
_______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
