Adding USB monitor Logitech C910 not working

[Jon K]

Hi guys - running Ubuntu 13.10 on an ARM platform:

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root@arm:/dev# uname -a
Linux arm 3.8.13-bone40 #1 SMP Fri Jan 31 10:36:05 UTC 2014 armv7l armv7l armv7l GNU/Linux

doing an ls -al in /dev yields:

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crw-rw----  1 root video    81,   0 Apr 20 03:04 video0
crw-------  1 root root     10, 130 Apr 20 03:04 watchdog
crw-------  1 root root    251,   0 Apr 20 03:04 watchdog0
crw-rw-rw-  1 root root      1,   5 Apr 20 03:04 zero

then

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root@arm:/dev# lsusb
Bus 001 Device 002: ID 046d:0821 Logitech, Inc. HD Webcam C910
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

also

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root@arm:/dev# v4l2-ctl --all
Driver Info (not using libv4l2):
        Driver name   : uvcvideo
        Card type     : UVC Camera (046d:0821)
        Bus info      : usb-musb-hdrc.1.auto-1
        Driver version: 3.8.13
        Capabilities  : 0x84000001
                Video Capture
                Streaming
                Device Capabilities
        Device Caps   : 0x04000001
                Video Capture
                Streaming
Priority: 2
Video input : 0 (Camera 1: ok)
Format Video Capture:
        Width/Height  : 1920/1080
        Pixel Format  : 'MJPG'
        Field         : None
        Bytes per Line: 0
        Size Image    : 4147200
        Colorspace    : SRGB
Crop Capability Video Capture:
        Bounds      : Left 0, Top 0, Width 1920, Height 1080
        Default     : Left 0, Top 0, Width 1920, Height 1080
        Pixel Aspect: 1/1
Streaming Parameters Video Capture:
        Capabilities     : timeperframe
        Frames per second: 30.000 (30/1)
        Read buffers     : 0

So everything looks OK - I can capture raw footage using grabber.c from another exercise, etc. and was able to use gstreamer to access it via web. Having trouble getting it to work with ZoneMinder though.

When I do a zmu query:

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root@arm:/dev# zmu -d /dev/video0 -V2 --query
error0

it errors.

I feel like I am missing something.

Attached are some screen shots.

[Apanta]

Colorspace : SRGB

perhaps the device format must be SRGB instead of NSTC.
I hope this suggestion were useful.

[PacoLM]

Hi,

I have a similar model (HP HD4310), running in a BeagleBone Black, these are my settings:

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/dev/video0
PAL
YUYV
320
240

Start with a lower resolution, like 320x240, you could push the hw up once you get it working! Don't forget to :

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adduser www-data video
usermod -a -G video www-data

Hope it helps,

PacoLM

[mastertheknife]

According to the V4L information you posted, your camera only supports the MJPEG capture palette. This capture palette is only supported by ZoneMinder v1.26 and newer.

[AlbertoLS]

Hi Jon,

I´m currently running ZM 1.25 (in the process to build ZM 1.27) on an ARM machine (Mele A2000) over a Wheezy Debian Image.

Would you mind to share with me how did you get that Ubuntu image ? Did you build it yourself ? Or got it from somewhere ?

Thanks !

Alberto