Re: SPCA1527A/SPCA1528 (micro)SD camera in webcam mode

[Jean-Francois Moine <moinejf@free.fr>]

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On Mon, 31 May 2010 00:03:10 +0200
Ondrej Zary <linux@rainbow-software.org> 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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