[gst-devel] v4l2 device wrongly captured

Guido José Valenzano Tocaimasa guidovalenzano at gmail.com
Sat Feb 5 23:36:14 CET 2011


I uploaded the files to:
 http://www.megaupload.com/?d=MZPEHM00


---------- Forwarded message ----------
From: Guido José Valenzano Tocaimasa <guidovalenzano at gmail.com>
Date: Sat, Feb 5, 2011 at 7:11 PM
Subject: v4l2 device wrongly captured
To: gstreamer-devel at lists.sourceforge.net


I have a NTSC camera connected to a BT878 capture device. I configure it
with:
$ v4l2-ctl -s ntsc

Then test it with:
$ gst-launch v4l2src ! xvimagesink
resulting in an image as the one attached (gstreamer_output.jpg).

However, using:
$ mplayer tv:// -tv driver=v4l2:norm=0
works perfectly (mplayer_output.jpg).

Where might be the problem?

I'm running Ubuntu Lucid 10.04 with GStreamer's PPA enabled. I also attached
result of:

$ gst-launch -v --gst-debug=v4l2:5 v4l2src device=/dev/video0 num-buffers=1
! xvimagesink
in case it's useful.

Another hint: I *believe* that there was no problem with the older GStreamer
packages, but can't tell for sure.


Guido

BTW: I really don't know if you received the attachments correctly. In case
you didn't, please let me know so I can upload them to 4shared, megaupload,
or similar.
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