GNOME Bugzilla – Bug 530250
"Color correction" enabled by default - so colors are wrong
Last modified: 2009-08-01 19:14:30 UTC
Please describe the problem: Cheese displays wrong colors. It is like in camorama when you use "color correction" effect.. but colors "corrected" are in reality wrong. It is not possible to configure this behaviour, so cheese become useless. My webcam is a stv680. Steps to reproduce: 1. Launch cheese 2. Watch yourself like you are ill 3. Actual results: Expected results: Does this happen every time? yes Other information:
are you using a proprietary graphics driver like ati or nvidia? does: gst-launch v4l2src ! ffmpegcolorspace ! ximagesink produce a correct picture, while gst-launch v4l2src ! ffmpegcolorspace ! xvimagesink does not?
I'm using the Nvidia driver. Executing the above commands produce the same effect: ill colors. Here are the 2 commands (slightly modified): gst-launch-0.10 v4lsrc ! ffmpegcolorspace ! ximagesink gst-launch-0.10 v4lsrc ! ffmpegcolorspace ! xvimagesink Note that stv680 don't have v4l2 driver, only v4l.
ok, then it is probably the problem of your graphics driver. could you investigate?
Tryed with "nv" driver, the results are the same. I don't think it's a video driver issue, because this behaviour is present from a long time.. probably it'a an issue of the stv680 module (one of them)
as its happening too with the gstreamer command line, its probably a driver bug or a gstreamer one, forwarding this bug to the gstreamer project
Does the output of 'gst-launch-0.10 videotestsrc ! xvimagesink' and '... ximagesink' look the same? (note the removed V in the latter)
Hei.. they are not! In the static colors, the third from bottom-left, xv produce a sort of violet and x produce a sort of light blue. That could be the problem!
Oops, Daniel and I both read #2 wrong -- the problem would be in the camera driver, not X. Could you attach an image that demonstrates the incorrect colors? An ideal image would have an area that should be black, white, and some (any) saturated color. Please identify the saturated color.
Dear reporter, do you have the picture as requested in comment #8? If you have any questions, don't hesitate to ask!
No response for months despite ping, and likely a bug elsewhere, closing as incomplete. Closing this bug report as no further information has been provided. Please feel free to reopen this bug if you can provide the information asked for. Thanks!