Logitech HD Pro Webcam C920

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Logitech's first camera that supports hardware H.264 encoding up to 1920x1080 @ 30 fps.

Supported formats

 # v4l2-ctl --list-formats
 
 ioctl: VIDIOC_ENUM_FMT
       Index       : 0
       Type        : Video Capture
       Pixel Format: 'YUYV'
       Name        : YUV 4:2:2 (YUYV)
 
       Index       : 1
       Type        : Video Capture
       Pixel Format: 'H264' (compressed)
       Name        : H.264
 
       Index       : 2
       Type        : Video Capture
       Pixel Format: 'MJPG' (compressed)
       Name        : MJPEG

Notice the high definition formats when using compressed mode:

 # v4l2-ctl --list-formats
 
 ioctl: VIDIOC_ENUM_FMT
     Index       : 0
     Type        : Video Capture
     Pixel Format: 'YUYV' 
     Name        : YUV 4:2:2 (YUYV)
           Size: Discrete 640x480
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 160x90
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 160x120
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 176x144
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 320x180
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 320x240
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 352x288
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 432x240
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 640x360
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 800x448
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 800x600
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 864x480
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 960x720
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1024x576
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1280x720
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1600x896
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1920x1080
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 2304x1296
                 Interval: Discrete 0.500 s (2.000 fps)
           Size: Discrete 2304x1536
                 Interval: Discrete 0.500 s (2.000 fps)
 
     Index       : 1
     Type        : Video Capture
     Pixel Format: 'H264' (compressed)
     Name        : H.264
           Size: Discrete 640x480
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 160x90
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 160x120
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 176x144
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 320x180
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 320x240
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 352x288
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 432x240
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 640x360
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 800x448
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 800x600
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 864x480
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 960x720
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1024x576
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1280x720
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1600x896
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1920x1080
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
 
     Index       : 2
     Type        : Video Capture
     Pixel Format: 'MJPG' (compressed)
     Name        : MJPEG
           Size: Discrete 640x480
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 160x90
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 160x120
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 176x144
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 320x180
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 320x240
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 352x288
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 432x240
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 640x360
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 800x448
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 800x600
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 864x480
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 960x720
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1024x576
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1280x720
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1600x896
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)
           Size: Discrete 1920x1080
                 Interval: Discrete 0.033 s (30.000 fps)
                 Interval: Discrete 0.042 s (24.000 fps)
                 Interval: Discrete 0.050 s (20.000 fps)
                 Interval: Discrete 0.067 s (15.000 fps)
                 Interval: Discrete 0.100 s (10.000 fps)
                 Interval: Discrete 0.133 s (7.500 fps)
                 Interval: Discrete 0.200 s (5.000 fps)

Software

As of June 2012, there is no software that fully supports this camera -- in particular the H.264 mode, which is pretty much what is interesting here:

guvcview works but does not support H.264
qv4l2 works, can capture and show H.264 stream. Unfortunately it has no support for saving the stream
The official v4l2 specs has an example capture program, which has been modified to capture H.264 instead.

The capture example can be reverted to save a continuous stream to stdout, which then can be piped to Gstreamer:

 ./capture -c 1000 -o | gst-launch -v playbin2 uri=file:///dev/fd/0

Oone can also use the following alternate pipeline to also show FPS:

 ./capture -c 10000 -o | gst-launch -v filesrc location=/dev/fd/0 ! decodebin2 ! fpsdisplaysink

v4l2-ctl can be used to configure the format and frame rate before starting the capture.

v4l2ucp provides a GUI for setting controls while the camera is running. So does v4l2-ctl but from a CLI.

Bonecam will do the above on the Beaglebone but stream it over the network instead of displaying.

Logitech HD Pro Webcam C920

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