Ubuntu
cheese package

  1. Bug #290506
  2. Comment #32

Comment 32 for bug 290506

Revision history for this message
Fabian A. Scherschel (fabsh) wrote : Re: cheese doesn't show v4l2 video output and disables output on gstreamer-based apps ran afterwards

Filippo:

My internal webcam works perfectly with the first command. CLI output:

20:12 fabsh@serenity:~$ gst-launch-0.10 v4l2src ! video/x-raw-yuv, width=640, height=480 ! xvimagesink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: Output window was closed
Additional debug info:
xvimagesink.c(1231): gst_xvimagesink_handle_xevents (): /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0
Execution ended after 6859525163 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
FREEING pipeline ...

With the second one, nothing happens and this is the output:

20:13 fabsh@serenity:~$ gst-launch-0.10 v4l2src ! video/x-raw-yuv, width=1280, height=1024 ! xvimagesink
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not negotiate format
Additional debug info:
gstbasesrc.c(2426): gst_base_src_start (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
Check your filtered caps, if any
Setting pipeline to NULL ...
FREEING pipeline ...