Messages in this thread | | | Date | Thu, 05 Apr 2001 18:59:02 -0700 | From | Mark McClelland <> | Subject | Re: ov511 problem |
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ov511 supports compression, but it doesn't always work yet. Even with compression, you will only get 12-15 FPS at 640x480 at most. USB just can't do better than that with this type of compression algorithm.
If you want to try compression, use the "compress=1" and "ttpp=1" parameters with the ov511 1.35 module. You will likely get garbage, but this will give you an idea of what the frame rate will be like once I have it working.
Erik Gustavsson wrote:
> On Thu, 5 Apr 2001, Thomas Speck wrote: > > IIRC the driver doesn't support compression, and there is no way you can > get 640x480 uncompressed at 30 fps over USB... > > > I am trying to get working a Spacec@m 300 (USB) by Trust. I tried this > > under 2.2.18 and 2.4.3. In order to get the camera detected I can use the > > usb-uhci or uhci module (the result is the same). The camera gets detected > > (some OV7610 gets probed - I don't know if this is the correct one) and > > after loading the ov511 module I get the picture of the camera displayed > > with xawt-3.38 (resolution 640x480 - the camera is able to this). > > The problem I am running into is that the framerate is extremely slow > > (maybe 3 fps), however, from the specifications it should work with 30 > > fps. My system is a Pentium II with 300 Mhz. Some Miro TV card with a > > BT848 chip works fine with the bttv driver. > > Do you have any idea ? > > If you need more info, just let me know. I am also willing to do some > > tests...
-- Mark McClelland mmcclell@bigfoot.com
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