After an evaluation, GNOME has moved from Bugzilla to GitLab. Learn more about GitLab.
No new issues can be reported in GNOME Bugzilla anymore.
To report an issue in a GNOME project, go to GNOME GitLab.
Do not go to GNOME Gitlab for: Bluefish, Doxygen, GnuCash, GStreamer, java-gnome, LDTP, NetworkManager, Tomboy.
Bug 168652 - [v4lsrc] Doesn't link to alpha, unless a format is forced
[v4lsrc] Doesn't link to alpha, unless a format is forced
Status: RESOLVED NOTABUG
Product: GStreamer
Classification: Platform
Component: gst-plugins
git master
Other Linux
: Normal normal
: NONE
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks:
 
 
Reported: 2005-02-27 13:22 UTC by Gergely Nagy
Modified: 2005-02-28 17:34 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Gergely Nagy 2005-02-27 13:22:34 UTC 
Command: 

gst-launch v4lsrc autoprobe=0 autoprobe-fps=0 !
video/x-raw-yuv,framerate=\(double\)10 ! alpha ! fakesink

Expectation:

The command would run, v4lsrc and alpha fixating to I420 between themselves.

Result:

WARN  (0x8050918 - 308197:15:41.518887000)          v4lsrc(25252)
gstv4lsrc.c(678):gst_v4lsrc_src_link:<v4lsrc0> palette for fourcc AYUV is -1,
refusing link
ERROR: pipeline doesn't want to play.

Ie, it doesn't even try to negotiate I420 (which is the only format supported by
my webcam).
Comment 1 Ronald Bultje 2005-02-28 17:34:24 UTC 
Well, duh, you are disabling autoprobing and thus it doesn't probe supported
colorspaces and claims to support any. You should not do that unless you know
what you are doing. ;). Stop-on-first-failure is policy, not a bug.