2010/3/30 Paulo Assis <[email protected]> > Roger Hi, > > >> > usb 1-1: new full speed USB device using s3c2410-ohci and address 5 > > > > I think this explains why you only have MJPG on the ARM board. > YUYV requires a higher bandwidth, so it's only available in usb2. > > But MJPG should also be available with usb2 and from what I understand > you only have YUYV ? > If this is true then its a bit strange. > > Best regards, > Paulo >
I've confirmed that I can ONLY use "YUYV" format on PC, "MJPG" will end up with an error.Then I test another cam embedded in my laptop (04f2:b13e from Chicony).I don't want to mix up the two cam,so just call the "PC Cam" and the "Laptop Cam". ---------------------------------------------------------- result of Laptop Cam (just make sense as you say) It says: Index:0 Format:YUV 4:2:2 (YUYV) Index:1 Format:MJPEG ---------------------------------------------------------- result of PC Cam on PC It says: Index:0 Format:YUV 4:2:2 (YUYV) ---------------------------------------------------------- result of PC Cam on laptop It says: Index:0 Format:YUV 4:2:2 (YUYV) ---------------------------------------------------------- result of PC Cam on ARM It says: Index=0 Format:MJPEG ---------------------------------------------------------- Do this mean the PC cam don't work well with the UVC driver?It seem I can only choose one format, no matter on USB1.1 or USB2.0.
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