On Tue, 5 Aug 2003, Ronald Bultje wrote: >> Then some cameras supported by qc-usb can deliver MJPEG compressed frames >> and I have used >> #define VIDEO_PALETTE_MJPEG (('q'<<8) | 2) /* Grab video in compressed MJPEG format */ >It's likely RGB JFIF/JPEG, isn't it? MJPEG is supposed to be YUY2 No. Looks like it's in 4:2:2 packed format (YUY2, I guess). I didn't write the decompression code (just ported it to run in kernel, ahem, it's from mpeg2dec by Aaron Holtzman), so I'm only 99% sure. The format is used by QuickCam Web and LEGO cam.