ffmpeg vs noname $10 webcam from tesco corps

root$
Bus 003 Device 006: ID 093a:262a Pixart Imaging, Inc.

$ v4l2-ctl -d /dev/video1 --all
Driver Info (not using libv4l2):
        Driver name   : pac7302
        Card type     : USB Camera (093a:262a)
        Bus info      : usb-0000:00:10.1-2
        Driver version: 2.13.0
        Capabilities  : 0x05000001
                Video Capture
                Read/Write
                Streaming
Format Video Capture:
        Width/Height  : 640/480
        Pixel Format  : 'PJPG'
        Field         : None
        Bytes per Line: 640
        Size Image    : 115790
        Colorspace    : JPEG (JFIF/ITU601)
Video input : 0 (pac7302: ok)
Streaming Parameters Video Capture:
        Frames per second: invalid (0/0)
        Read buffers     : 2


$ ffmpeg -f v4l2 -s 640x480 -r 30 -i /dev/video1 -vcodec libx264 test.mkv
ffmpeg version N-40640-g5edd4fc Copyright (c) 2000-2012 the FFmpeg developers
  built on May 14 2012 02:03:22 with gcc 4.4.4 20100726 (Red Hat 4.4.4-13)
  configuration: --enable-gpl --enable-libx264
  libavutil      51. 50.100 / 51. 50.100
  libavcodec     54. 21.101 / 54. 21.101
  libavformat    54.  4.100 / 54.  4.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 72.105 /  2. 72.105
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
  libpostproc    52.  0.100 / 52.  0.100
[video4linux2,v4l2 @ 0x2bd1300] Cannot find a proper format for codec_id 0, pix_fmt -1.
/dev/video1: Input/output error


$ ffmpeg -an -f v4l2 -vcodec mjpeg -i /dev/video1 ./asd.mjpeg
ffmpeg version N-40640-g5edd4fc Copyright (c) 2000-2012 the FFmpeg developers
  built on May 14 2012 02:03:22 with gcc 4.4.4 20100726 (Red Hat 4.4.4-13)
  configuration: --enable-gpl --enable-libx264
  libavutil      51. 50.100 / 51. 50.100
  libavcodec     54. 21.101 / 54. 21.101
  libavformat    54.  4.100 / 54.  4.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 72.105 /  2. 72.105
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
  libpostproc    52.  0.100 / 52.  0.100
[video4linux2,v4l2 @ 0x22de200] Cannot find a proper format for codec_id 8, pix_fmt -1.
/dev/video1: Input/output error
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