Hi Mauricio, On Tuesday 21 October 2008, Mauricio Silveira wrote: > Hi Laurent, > > Fast answer huh!? > > ** VERSIONS > TVTIME version: 1.0.2 > USBUTILS version: 0.73 > kernel: 2.6.27.1 > uvcvideo: SVN r261 > > ** INSMOD messages, general: > > uvcvideo 2-5:1.0: usb_probe_interface > uvcvideo 2-5:1.0: usb_probe_interface - got id > uvcvideo: Found UVC 1.00 device USB Video Camera (0471:2034) > input: USB Video Camera as /class/input/input52 > usb 2-5: link qh1024-0001/f6d93180 start 1023 [1/0 us] > usbcore: registered new interface driver uvcvideo > USB Video Class driver (SVN r261) > > > **QUIRKS > > * Quirks 0 to 7 > > ANY QUIRK GENERAL MESSAGES > TVTIME Output: > videoinput: Driver won't tell us its norm: Invalid argument > videoinput: Can't get tuner info: Invalid argument > videoinput: Driver won't tell us its norm: Invalid argument > videoinput: Can't get tuner info: Invalid argument
tvtime tries to get the tv norm, but that's not applicable to webcams as they have no tv tuner. Nothing wrong there on the driver's side. > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). There's a bug in tvtime. A patch is available at svn://svn.berlios.de/linux-uvc/patches/tvtime/ > videoinput: Can't mute card. Post a bug report with your > videoinput: driver info to http://tvtime.net/ The UVC part of the camera doesn't handle sound, so it can't be muted. Nothing wrong there either. > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't read frame. Error was: Invalid argument (0). > videoinput: Can't mute card. Post a bug report with your > videoinput: driver info to http://tvtime.net/ > videoinput: Include this error: 'Invalid argument' > Thank you for using tvtime. > > KERNEL MESSAGES(dmesg): > uvcvideo: device USB Video Camera requested null bandwidth, defaulting > to lowest. > (repeats 14 times) No worry there either, that's just a warning. [snip] > *** Now let's see the messages with some changes in tvtime's config: > > ->> Changed norm to SECAM: > > no kernel messages > TVTIME screen with the message: > "Frames too short from uvcvideo > Cannot open capture device /dev/v4l/video1" > > **TVTIME console output: > > videoinput: Driver won't tell us its norm: Invalid argument > videoinput: Can't get tuner info: Invalid argument > > Your capture card driver: uvcvideo [USB Video Camera/0000:00:0a.1/256] > does not support full size studio-quality images required by tvtime. > This is true for many low-quality webcams. Please select a > different video device for tvtime to use with the command line > option --device. That was true a long time ago when video devices where either tv tuners or low-quality webcams, but hardware have evolved :-) > ***** I Just can't get to reproduce the messages below again! Might have > something to do with the pwc module [snip] Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
