Logitech C110

Logitech C525

Logitech C920

Hardware >

See also:

• Webcam software

• Optional microphone, with noise reduction.

  • I already have a semi-professional microphone.

Requirements ∞

• 720p – (1280 x 720)
• Autofocus.
• Extreme close-ups.

• Movable.

  • panning
• Lighting correction.

• Clamped mount.

  • I may have to use something third-party, or maybe just velcro.

Desires ∞

• H.264 support in-hardware.
• 1080p – (1920 x 1080)
• Software-controlled movement.
• Remote-controlled movement.
• Works in Linux. “Driverless” kernel support.

• Tripod mount.

  • I would, of course, need to get a tripod.

Webcams ∞

/tag/hardware+webcams

• Creative
• Logitech

• Microsoft

  • Not much selection, and I don’t see any mention of H.264 support.

Creative ∞

https://www.creative.com/mylivecam/products/?catID=1

Without proper model numbers, it’s simply too difficult to figure out what’s what and where to get what with witch name. I’m being forced to compare pictures.

• Creative Live! Cam Connect HD

  • 720p, 30fps, H.264
  • Auto-focusing lens, noise-cancelling microphone.
  • Explicit Linux support.

• Creative Live! Cam Socialize HD AF

  • As above, but with a wide angle lens.
  • Missing H.264 support. Boo.

Notes ∞

• Logitech technology

Linux notes ∞

• Webcams with libre distribution support can be found at https://www.thinkpenguin.com/catalog/accessories-other-products-gnulinux

frame rate is too low ∞

It’s your auto exposure slowing things down.

echo "options gspca autoexpo=0">>/etc/modprobe.d/options
modprobe -r gspca && modprobe gspca
wxcam

But it might be dim now. You may have to screw with other settings. =/

You can also lower the size of the capture area.

Audio sync is off ∞

Previously I had an ffmpeg solution, but it doesn’t work any more.

gspca notes ∞

Options:

modinfo gspca | grep parm

parm:           force_gamma_id:Forced assigning ID of contrast settings (0=default,1,2,3) Zc03xx only (int)
parm:           force_sensor_id:Forced assigning ID sensor (Zc03xx only). Dangerous, only for experts !!! (int)
parm:           lightfreq:Light frequency banding filter. Set to 50 or 60 Hz, or 0 for NoFlicker (default=50) Zc03xx only (int)
parm:           usbgrabber:Is a usb grabber 0x0733:0x0430 ? (default 1)  (int)
parm:           compress:Turn on/off compression (not functional yet) (int)
parm:           GGreen:Gain Green setting range 0 to 512 /256  (int)
parm:           GBlue:Gain Blue setting range 0 to 512 /256  (int)
parm:           GRed:Gain Red setting range 0 to 512 /256  (int)
parm:           OffGreen:OffGreen setting range -128 to 128 (int)
parm:           OffBlue:OffBlue setting range -128 to 128 (int)
parm:           OffRed:OffRed setting range -128 to 128 (int)
parm:           gamma:gamma setting range 0 to 7 3-> gamma=1 (int)
parm:           force_rgb:Read RGB instead of BGR (int)
parm:           debug:Debug level: 0=none, 1=init/detection, 2=warning, 3=config/control, 4=function call, 5=max (int)
parm:           autoexpo:Enable/Disable auto exposure (default=1: enabled) (PC-CAM 600/Zc03xx/spca561a/Etoms Only !!!) (int)

You can do stuff like this, I think:

echo 4 > /sys/module/gspca/parameters/gamma

/etc/modprobe/d/options can have multiple lines like this:

options gspca gamma=5 autoexpo=0
# options gspca GGreen=200 GBlue=300 GRed=200
# options gspca OffGreen=-2 OffBlue=0 OffRed=-2
options gspca force_rgb=1