On Wed, 18 Feb 2009 13:58:00 +0100 Thomas Kaiser <v4l@xxxxxxxxxxxxxxx> wrote: > Hello Jean-Francois Hello Thomas and Steve, > Thanks, for the frame (or frames?). It is a full image. It is compressed: the images have different sizes, about 25 Kb. > What resolution did you use while recording this stream? I have not the webcam, it is Steve's. Looking at the image size, I think the resolution should be 640x480, but it maybe 352x288. Steve? > Can you put your USB trace somewhere on the net where I can download > it? http://moinejf.free.fr/UsbSnoop.zip > When I was guessing the streams of webcams, I used to get the sensor > into saturation -> complete white picture. So you know how the > decoded picture should look like ;-) > > Actually, it is quite easy to get a webcam sensor into saturation. > Just remove the lens of the cam an put a light in front of it. Check > in Windoz if the picture is really complete white and then record a > stream in Linux. Now, you should get a very homogeneous stream. Look > at it and .... > > I hope you got the idea? Very good idea. Steve, may you do such a trace? Cheers. -- Ken ar c'hentan | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
