On Sat, Sep 20, 2014 at 09:02:32PM +0100, Paulo Assis wrote: > Can you test with other input formats (rgb3, yu42, ...). You can set the > format from the comand line.
I did a quick guvcview -f rgb3 just now: An error was reported, the gui control panel appeared, but the [QUIT] buttom did not work. The only way I found to stop the program was to send a SIGTERM. Here is the captured o/p: -------------------------------------------------------------- GUVCVIEW: couldn't open /home/ael/.config/guvcview2/video0 for read: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib pcm_route.c:947:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:947:(find_matching_chmap) Found no matching channel map V4L2_CORE: (VIDIOC_QUERYBUF) - buffer length is 0 V4L2_CORE: (VIDIOC_QUERYBUF) - buffer length is 0 V4L2_CORE: (VIDIOC_QUERYBUF) - buffer length is 0 V4L2_CORE: (VIDIOC_QUERYBUF) - buffer length is 0 V4L2_CORE: Unable to map buffer: Invalid argument V4L2_CORE: (VIDIOC_QBUFS) Unable to query buffers: Invalid argument V4L2_CORE: (VIDIOC_REQBUFS) Unable to delete buffers: Device or resource busy GUCVIEW: could not set the defined stream format GUCVIEW: trying first listed stream format V4L2_CORE: (VIDIOC_S_FORMAT) Unable to set format: Device or resource busy GUCVIEW: also could not set the first listed stream format GUVCVIEW: Video capture failed ---------------------------------------------------------------------- An earlier attempt when I tried to capture the video despite the error resulted in what looked like livelock: a very busy loop. Again it stopped after sending a SIGTERM. > mjpeg now uses libavcodec for decoding by default, you can change this when > building by enabling the internal decoder with configure. I haven't tried that yet. I suppose that I might add the verbose -w9 flag first and send you the extended o/p, although I suspect it won't help at this stage. ael -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
