flip effect doesn't work on GStreamer 1.22

[Phelipe Matheus Couto de Aguiar]

Impact
------
The Flip effect in the Cheese app doesn't work in Ubuntu 23.10.

Test Case
---------
1. Install the updated gnome-video-effects packages
2. Open the Cheese app
3. Click the Effects button and verify that Flip is showing a reversed version of No Effect

What Could Go Wrong
-------------------
This is a simple one-line patch. gnome-video-effects has only one reverse dependency in Ubuntu: cheese.

Original Bug Report
-------------------
Distributor ID: Ubuntu
Description: Ubuntu 23.04
Release: 23.04
Codename: lunar

gnome-video-effects:
  Installed: 0.5.0-1ubuntu1
  Candidate: 0.5.0-1ubuntu1
  Version table:
 *** 0.5.0-1ubuntu1 500
        500 http://br.archive.ubuntu.com/ubuntu lunar/main amd64 Packages
        100 /var/lib/dpkg/status

The file located in: /usr/share/gnome-video-effects/flip.effect is using the property "method" which is deprecated as you can see in GStreamer "https://gstreamer.freedesktop.org/documentation/videofilter/videoflip.html?gi-language=c"

Deprecated version: PipelineDescription=videoflip method=horizontal-flip

So the fix for this problem is to change the property to the new one, which is called video-direction, after this the effect will work correctly.

Fix: PipelineDescription=videoflip video-direction=horiz

The program that I used to test this effect was Cheese.

[Phelipe Matheus Couto de Aguiar (matheus-aguiar-dev)]

here is the bug fix, that was informed in the LP

[Launchpad Janitor (janitor)]

This bug was fixed in the package gnome-video-effects - 0.6.0-1ubuntu1

---------------
gnome-video-effects (0.6.0-1ubuntu1) mantic; urgency=medium

  * Merge with Debian, remaining Ubuntu changes:
    - Split gnome-video-effects that require the "bad" gstreamer plugins
      into a separate package: gnome-video-effects-extra.

gnome-video-effects (0.6.0-1) unstable; urgency=medium

  * New upstream release
    - Fix flip effect with gstreamer 1.22 (Closes: #1037514, LP: #2023675)
  * gnome-video-effects-frei0r.install: Install new scanlines effect

 -- Jeremy Bícha <email address hidden> Tue, 13 Jun 2023 15:30:21 -0400

[Steve Langasek (vorlon)]

This bug has been triaged as 'Medium', which I believe is correct. It therefore does not fit the Ubuntu SRU policy: https://wiki.ubuntu.com/StableReleaseUpdates#When

Rejecting this upload.

[Steve Langasek (vorlon)]

An upload of gnome-video-effects to lunar-proposed has been rejected from the upload queue for the following reason: "does not comply with SRU policy".

[Jeremy Bícha (jbicha)]

I appeal the rejection of this Stable Release Update using this criteria:

"In the following cases a stable release update is also applicable as they have a low potential for regressing existing installations but a high potential for improving the user experience, particularly for Long Term Support releases:

Bugs which do not fit under above categories, but (1) have an obviously safe patch and (2) affect an application rather than critical infrastructure packages (like X.org or the kernel)."

[Steve Langasek (vorlon)]

Hello Phelipe, or anyone else affected,

Accepted gnome-video-effects into lunar-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gnome-video-effects/0.5.0-1ubuntu2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-lunar to verification-done-lunar. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-lunar. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Phelipe Matheus Couto de Aguiar (matheus-aguiar-dev)]

Hi, Steve!

The package(gnome-video-effects 0.5.0-1ubuntu2) was installed and tested using the following steps:

Opened Cheese, in the main screen the flip(horizontal-invertion) effect was applied correctly, checked other effects to confirm if the effect was indeed being applied correctly and yes it was.

So with this tests on the package gnome-video-effects 0.5.0-1ubuntu2 its confirmed that the problem was solved.

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for gnome-video-effects has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package gnome-video-effects - 0.5.0-1ubuntu2

---------------
gnome-video-effects (0.5.0-1ubuntu2) lunar; urgency=medium

  * Cherry-pick patch to fix flip effect with gstreamer 1.22 (LP: #2023675)

 -- Jeremy Bícha <email address hidden> Tue, 13 Jun 2023 15:34:22 -0400