-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Am 13.12.2011 12:31, schrieb Andrea Greggio: > Hi, i've a problem with Microsoft Lifecam studio HD. I've installed > openmeetings 1.9 on server linux ubuntu 10.04. I've installed a > client with ubuntu 11.10, kerne 3.0.3, uvcvideo verision 1.1.0, > firefox 8, adobe flash 11.1.102.55 and java sun 1.6. I've a > Microsoft Lifecam studio Hd that works with other application; so > when i test it with audio and video in the preview windows it > works, but when i enter in the room the screen is black. If i > changed the audio device with the internal realteck, it works and i > can view the images. > > So if i do the same thing in windows client it works correctly. > > In the list of device i found : > > Despite being able to work with lower > > USB bandwidths, this device always requests the maximum possible > bandwidth, even for the MJPEG format. Using one of those cameras > in conjunction with another USB device (including the camera > internal microphone) will likely fail. You can tell the uvcvideo > driver to estimate the required bandwidth instead of trusting the > camera by setting the FIX_BANDWIDTH quirk. This will only affect > uncompressed formats, and even there there's no guarantee of > success. > > > So i've to use the quirks but not work because i think that the > stream is MJPEG and no uncompressed. There is a way to forcing use > uncompressed format or other solution?
Yes there are way to force webcam to do some thing, but it looks like in any case you need to edid source of kernel or of userspace program. in kernel it is even possible to recalculate jpeg bandwidth, one of my patches was some where on the list. may the force be with you :) - -- Regards, Alexey -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk7qSmcACgkQw8E0jNwoJm+rugCeLxyunGjqinLwx1xVaF9CdnEr LjYAoJwBbWYhepqf7oim+MHqrjE9VyWw =cF8q -----END PGP SIGNATURE----- _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
