totem fails to recognize mkv-header crop values

Bug #1014264 reported by twipley on 2012-06-17
This bug affects 2 people
Affects Status Importance Assigned to Milestone
totem (Ubuntu)

Bug Description

MKV-file headers may contains values to be used for players affecting top-, left-, right-, and bottom-pixels cropping. Totem does not currently recognize those header values, and just ignores them.

This can be demonstrated using the mkvmerge GUI program and its header editor to fiddle with such values, and them running the resulting files through totem. Another player than totem (VLC) was tried, which recognized those values, and therefore cropped the video upon playing to remove the annoying border flickering that was experienced in that given file, without the need for the stream to be reencoded, and either suffering from a deterioration in quality, or becoming huge through lossless reencoding. (Consider this as an argument for the pertinence of this bug.)

This bug can be experienced under Precise, using the as-of-current latest build of totem.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: totem 3.0.1-0ubuntu21
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic-pae 3.2.18
Uname: Linux 3.2.0-25-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
Date: Sun Jun 17 06:41:52 2012
ExecutablePath: /usr/bin/totem
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
 PATH=(custom, no user)
SourcePackage: totem
UpgradeStatus: No upgrade log present (probably fresh install)

twipley (smt-infp) wrote :
twipley (smt-infp) wrote :

Just to be clear, crop values should be unobtrusively detected and applied, but there would be no need whatsoever, as far as I am seeing it, for the implementation of crop-values-modification capabilities from the totem settings.

(The goal merely being to respect the own predefined idiosyncrasies of the projected media file.)

Fabio Marconi (fabiomarconi) wrote :

Thank you for your bug report. This bug has been reported to the developers of the software. You can track it and make comments at:

Fabio Marconi (fabiomarconi) wrote :

Can you please upgrade about the actual status of the issue ?
Ubuntu Bug Squad volunteer triager

Changed in totem (Ubuntu):
status: New → Incomplete
Changed in totem:
importance: Unknown → Medium
status: Unknown → New
Fabio Marconi (fabiomarconi) wrote :

actually not yet implemented
Ubuntu Bug Squad volunteer triager

Changed in totem (Ubuntu):
status: Incomplete → Confirmed
Changed in totem:
importance: Medium → Wishlist
status: New → Confirmed

To crop video like MP4, MKV, MOV, AVI, AVCHD, MPG etc, you may also try this method at

Changed in totem:
status: Confirmed → Expired
Daniel van Vugt (vanvugt) wrote :

Thank you for reporting this bug to Ubuntu.
Ubuntu 12.04 (precise) reached end-of-life on April 28, 2017.

See this document for currently supported Ubuntu releases:

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.

Changed in totem (Ubuntu):
status: Confirmed → Won't Fix
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