On Fri, 15 Jan 2010 01:32:03 +0100 Laurent Pinchart <[email protected]> wrote:
> Hi Celejar, > > On Wednesday 13 January 2010 00:12:27 Celejar wrote: > > Hi, > > > > I have a cheap, no-name webcam from FocalPoint.com. Video seems to > > basically work (tried with xawtv and mplayer), but with banding > > (regularly spaced bluish horizontal bands that seem to move vertically > > upward, taking about a second or two to travel from the bottom of the > > image to the top). > > That's usually caused by a mismatch between the power supply frequency and > the > sensor sampling rate. Have you tried in plain daylight ? I haven't. By power supply, do you mean the power that supplies the room lighting? > > Haven't tried sound since the short lengths of the USB and mic cables and > > the location of my machine's ports make plugging both in simultaneously > > difficult or impossible. > > > > Thanks for your work on this project! > > You're welcome. Thanks for the report. I'll update the supported devices list > as soon as Berlios become responsive again. Thanks again. > As stated by the log, you should connect the camera to a high speed hub :-) > Your hub is probably running at full speed only (12 Mb/s), and the camera > seems to require high speed (480 Mb/s). Makes sense - this is a cheap, no-name hub bought on Ebay. OTOH, I'm looking at it now and it has a sticker on it proclaiming "480 Mbps"; have I been cheated? In any event, the notion that "high speed" is faster than "full speed" always confuses me ;) Celejar -- foffl.sourceforge.net - Feeds OFFLine, an offline RSS/Atom aggregator mailmin.sourceforge.net - remote access via secure (OpenPGP) email ssuds.sourceforge.net - A Simple Sudoku Solver and Generator _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
