video decoders don't work correctly

[Wolf Rogner]

Playing videos sometimes just displays black images (audio coming in clearly) or with one colour channel missing (magenta tint mostly).

Tried with several videos, there seems to be no pattern (avi as well as mpeg, different encoders).

A significant amount of first calls (after waiting a period of minutes) brings up black (no video).

Ubuntu 17.10
plain installation (with additional media support though)

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: libgstreamer1.0-0 1.12.2-1
ProcVersionSignature: Ubuntu 4.13.0-10.11-generic 4.13.1
Uname: Linux 4.13.0-10-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 12 10:03:44 2017
InstallationDate: Installed on 2017-09-05 (6 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170902)
SourcePackage: gstreamer1.0
UpgradeStatus: No upgrade log present (probably fresh install)
XorgLog: Error: [Errno 2] No such file or directory: '/var/log/Xorg.0.log'

[Wolf Rogner (war-rsb)]

This issue occurs as well if cheese is started.
(the camera had to be installed first via https://github.com/patjak/bcwc_pcie/wiki/Get-Started - refer to bug #1715717).

The image is tinted magenta (the green channel is not captured).
However taking a still works fine (all channels are captured giving correct imaging).

Thus I presume the issue has something to do with video en- and decoding.

(I tried the camera under macOS and it works fine).

[Sebastien Bacher (seb128)]

is that the same issue than bug #1716250?

[Wolf Rogner (war-rsb)]

Seems so.
Sorry, didn't find it when filing the issue.
Should be merged with 1716250 as the descriptions there are accurate.