Hi,
I have beagleboard with the OMAP3530 processor and I want to read a usb
webcam out. But I only get usable results at 160x120 resolution.
I set the pixelformat to "V4L2_PIX_FMT_RGB24" and the resolution to
160x120. With these settings I get 30fps at 4% cpu load. But when I set
the resolution to 320x240 or 640x480 the cpu load is at 98% and I get
only 17 or 4fps. Also I get at 640x480 errors like "libv4lconvert: Error
decompressing JPEG: fill_nbits error: need 9 more bits".
Is this a normal behavior or is there a way to fix this? I think the
problem is the conversion from MJPEG to RGB, because when I set the
pixelformat to MJPEG the cpu load is <1%. But I need RGB data for
image processing.
I hope someone can help me.
Regards, Joern
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