-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Laurent,
Laurent Pinchart wrote: > Hi Jan, > > Could you try different resolutions ? The driver should report the > bandwidth requested by the camera in the kernel log, that information > can help debugging the issue. OK, got it work now - I guess I have mixed some incompatible module versions. 320x240 15 and 30fps works, both cameras stream. Log shows: uvcvideo: device Vimicro USB2.0 PC Camera requested 595 bytes per payload. 352x288 15 and 30fps works, both cameras stream Log: uvcvideo: device Vimicro USB2.0 PC Camera requested 785 bytes per payload. 640x480 15 and 30fps doesn't work, opening second luvcview results in: uvcvideo: device Vimicro USB2.0 PC Camera requested 2380 bytes per payload. uvcvideo: Failed to submit URB 0 (-28). Strange thing is that the amount of data requested doesn't depend on the frame rate. I did a bit of experimentation and have managed to get both cameras stream at 640x480/15fps with the payload size of 2000 bytes. However, luvcview hangs if I try to use 30fps (there is no message in the log). I think you need to take the requested framerate in the account when doing the calculation. > Please note that you must use the videodev module (and its > dependencies) from the uvcvideo source tree. Mixing uvcvideo from the > mercurial tree with a mainline videodev module will probably crash. Yep - that was it :( Regards, Jan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mandriva - http://enigmail.mozdev.org iD8DBQFJmECcn11XseNj94gRAuJkAJ0YQy+B1wL0M8i7rCZbC//dQnOtjQCgnTyM FXjydE+KeTkSxfLwF0bGE9o= =crOr -----END PGP SIGNATURE----- _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
