F9 gst and v4l2 problem
fernando.apesteguia at gmail.com
Sun Mar 29 11:43:13 UTC 2009
I'm using Fedora 9 and I want to get my webcam to work.
This is my configuration (x86_64 system):
Webcam: Logitech QuickCam for Notebooks. It uses the zc3xx driver
The webcam works fine with Ekiga, v4l2 is selected in the Preferences tab.
It doesn't work however in cheese or others (skype).
cheese -v reports this when trying to record video from the webcam:
(cheese:4069): GStreamer-CRITICAL **: gst_value_set_fraction:
assertion `denominator != 0' failed
Detected webcam: USB Camera (046d:08dd)
(cheese:4069): GStreamer-CRITICAL **: gst_element_set_state: assertion
`GST_IS_ELEMENT (element)' failed
(cheese:4069): GStreamer-CRITICAL **: gst_element_set_locked_state:
assertion `GST_IS_ELEMENT (element)' failed
I tried to use gstreamer-properties to figure out what is happening.
In the video tab, the output seems to be fine, the test runs OK.
However, when I try to run the test for my webcam (it is detected here
again) with v4l2, I get this:
gstreamer-properties-Message: Skipping unavailable plugin 'artsdsink'
gstreamer-properties-Message: Skipping unavailable plugin 'esdsink'
gstreamer-properties-Message: Skipping unavailable plugin 'v4lmjpegsrc'
gstreamer-properties-Message: Skipping unavailable plugin 'qcamsrc'
gstreamer-properties-Message: Skipping unavailable plugin 'esdmon'
gstreamer-properties-Message: Error running pipeline 'Video for Linux
2 (v4l2)': Could not negotiate format [gstbasesrc.c(2436):
gst_base_src_start (): /pipeline0/v4l2src3:
Check your filtered caps, if any]
and the program closes.
If I select v4l, I get a window full of green noise.
So I suppose this is some problem related with the v4l2 plugin for
gstreamer, but I don't know how to fix this. I've Googled it and I saw
people from other distributions having the same problem, but usually
an update fixed the problem. My Fedora system is up to date.
Thanks in advance.
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