camgrab will not work

[Peter Swinkels]

Binary package hint: camgrab

Instead of taking a snapshot camgrab fails with the following error:

=====================
setting cam pic: Invalid argument
No supported palette found.
=====================

btw: Cheese 2.24.2 can take snapshots.

kernel version: 2.6.27-11
Ubuntu 8.10
Trust WB-6250X Webcam

[Pradeep (chaudharipradeep9)]

Ya , I got same error

No supported palette found.

I have tried camgrab on ubuntu 9.04

[Fabián Rodríguez (magicfab)]

Medium importance: sever impact on a non-core application.

Further more, there is no manpage. I'll open another bug report.

[zerhacke (j-allberry)]

I have found the solution.

In a terminal or with Synaptics or whatever your package manager of choice is, install the following

libv4l-0
libjasper1
libjasper-dev
libjasper-runtime

Then with your favorite camera software, launch in the terminal with the following LD_PRELOAD

LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so camgrab

The above will launch camgrab with the v4l compatibility camgrab and almost every other webcam software for Jaunty needs.

[Peter Swinkels (peter-swinkels)]

Thank you very much. This appears to have fixed the problem for camgrab. When I try "LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so came" or "LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so hasciicam" It seems I still have the same problems as before.

[tdn (spam-thomasdamgaard)]

I can confirm this bug in karmic.

[pype (pype-1999-geo)]

running Karmik here, stumbled upon this bug using
Bus 007 Device 002: ID 046d:08af Logitech, Inc. QuickCam Easy/Cool

and tried the solution proposed above (LD_PRELOAD=/.../v4l1compat.so)
got the following output:
ioctl VIDIOCMCAPTURE: Invalid argument
***** Imlib2 Developer Warning ***** :
    This program is calling the Imlib call:
        imlib_image_set_format();
    With the parameter:
        image
    being NULL. Please fix your program.
***** Imlib2 Developer Warning ***** :
    This program is calling the Imlib call:
        imlib_save_image_with_error_return();
    With the parameter:
        image
    being NULL. Please fix your program.

***** Imlib2 Developer Warning ***** :
    This program is calling the Imlib call:
        imlib_free_image_and_decache();
    With the parameter:
        image
    being NULL. Please fix your program.
Error saving image shot.jpg - Unknown error (15078256). Attempting to continue

(I guess the first line is the root of all evil)

[Juan Gonzalez (jglopez)]

Here on Maverick, same situation as pype.

[Surrogard (surrogard)]

Make sure you use the correct video device, on my computer the standard device (/dev/video0) is the TV-Card with capture capabilities returning the same results as pype and Juan.
Using /dev/video1 works like a charm...

[pype (pype-1999-geo)]

 `camgrab -help` will tell me what the manpage should tell.
only /dev/video0 here, I'm afraid.

any substitute program to suggest ?