On Mon, 31 May 2010 00:03:10 +0200 Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx> wrote: > > I would try extracting a JPEG header from one of the files captured > > by the camera in stand alone mode (either a JPEG still or MJPEG > > file), and put that header together with the image data from the > > USB capture. It may not look perfect, but hopefully you will get > > something you recognize. > > Just thought about the same thing so I uploaded a video file: > http://www.rainbow-software.org/linux_files/spca1528/sunp0003.avi > > > Attached was Theodore's first attempt of such a procedure with a > > header extracted from a standalone image file from my Jeilin based > > camera and USB snoop data from the same camera. It wasn't perfect, > > but it was recognizable. I could not believe it! I already tried the image as JPEG, but I got just big colored pixels. I changed the 'samples Y' from 21 to 22 and I got something coherent! Here is the same image as yesterday with JPEG 411 header, compression quality 80% and insertion of 0x00 after 0xff. -- Ken ar c'hentañ | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/
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