[gstreamer-bugs] [Bug 578500] v4l2src caps

GStreamer (bugzilla.gnome.org) bugzilla-daemon at bugzilla.gnome.org
Tue Apr 14 08:02:29 PDT 2009

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  GStreamer | gst-plugins-good | Ver: 0.10.21

Francois Forest changed:

           What    |Removed                     |Added
             Status|NEEDINFO                    |UNCONFIRMED

------- Comment #3 from Francois Forest  2009-04-14 15:02 UTC -------
Following the above recommendation I reformulate the report as follows:

1) the bug appears on version 0.10.21

2) The following pipeline failed in negociating caps while it exists compatible
caps on each element pairs.
$ gst-launch-0.10  v4l2src ! ffmpegcolorspace ! video/x-raw-rgb ! xvimagesink
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not
negotiate format
Additional debug info:
gstbasesrc.c(2426): gst_base_src_start ():
Check your filtered caps, if any

3) Hint: the same pipeline ending with element ximagesink or fakesink in place
xvimagesink succeeds.
The same is true if we force fully defined caps between ffmpeg & ximagesink as
$ gst-launch-0.10 --gst-debug=v4l2src:3 v4l2src ! ffmpegcolorspace !
! xvimagesink

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