Hi, I am trying to capture VGA frames in YUYV format from Logitech QuickCam E3500.
But When I try to do this , I get the following error: uvcvideo: Failed to submit URB 0 (-28). Also, I put printk in the uvc_init_video_isoc() function of uvc_video.c to get psize and size values in the following manner: psize = le16_to_cpu(ep->desc.wMaxPacketSize); psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); size = stream->ctrl.dwMaxVideoFrameSize; printk(KERN_ALERT "SIZE = %d\n",size); printk(KERN_ALERT "PSIZE = %d\n",psize); When I try to capture VGA - YUV I get the following alerts: SIZE = 614400 PSIZE = 1984 This is for single frame capture. I tried to do the same thing for QVGA -YUV, and then I was able to capture the image. I got the following alerts: SIZE = 153600 PSIZE = 512 What could be causing this... Regards, Shekhar
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