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[Bug Watch Updater <766716@xxxxxxxxxxxxxxxxxx>]

** Changed in: pitivi
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/766716

Title:
  Video fade causes Theora Y444 output instead of I420

Status in PiTiVi , Non-linear video editor:
  Expired
Status in “pitivi” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: pitivi

  I'm working on a video that I'm rendering to OGG Theora.

  If the video has any fades (using the video "levels" in the timeline),
  the rendered video is in the Y444 colorspace (no chroma subsampling).
  This colorspace isn't as well supported (eg Chromium displays it all
  crazy), and as PiTiVi doesn't let you choose the colorspace anyway,
  this is certainly a bug... output should be in I420.  If I change the
  mixer so that there is no fade anywhere in timeline, then output is
  I420 (same edit, just making this change).

  You can confirm the colorspace using the `ogginfo` command line tool.
  For example, video with fade:

  """
  jderose@jgd-ws:~/bzr/whatsnew$ ogginfo whatsnew2.ogv 
  Processing file "whatsnew2.ogv"...

  New logical stream (#1, serial: 4f220126): type theora
  Theora headers parsed for stream 1, information follows...
  Version: 3.2.1
  Vendor: Xiph.Org libtheora 1.1+ 20100314 (Ptalarbvorm)
  Width: 960
  Height: 540
  Total image: 960 by 544, crop offset (0, 4)
  Framerate 25/1 (25.00 fps)
  Pixel aspect ratio 1:1 (1.000000:1)
  Frame aspect 16:9
  Colourspace unspecified
  Pixel format 4:4:4
  Target bitrate: 0 kbps
  Nominal quality setting (0-63): 52
  Theora stream 1:
  	Total data length: 4758512 bytes
  	Playback length: 1m:26.280s
  	Average bitrate: 441.215763 kb/s
  Logical stream 1 ended
  """

  Same edit without the fade:

  """
  jderose@jgd-ws:~/bzr/whatsnew$ ogginfo whatsnew3.ogv 
  Processing file "whatsnew3.ogv"...

  New logical stream (#1, serial: 5e8ba4ba): type theora
  Theora headers parsed for stream 1, information follows...
  Version: 3.2.1
  Vendor: Xiph.Org libtheora 1.1+ 20100314 (Ptalarbvorm)
  Width: 960
  Height: 540
  Total image: 960 by 544, crop offset (0, 4)
  Framerate 25/1 (25.00 fps)
  Pixel aspect ratio 1:1 (1.000000:1)
  Frame aspect 16:9
  Colourspace unspecified
  Pixel format 4:2:0
  Target bitrate: 0 kbps
  Nominal quality setting (0-63): 52
  Theora stream 1:
  	Total data length: 3537608 bytes
  	Playback length: 1m:26.280s
  	Average bitrate: 328.011868 kb/s
  Logical stream 1 ended
  """

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: pitivi 0.13.5-1ubuntu4
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic x86_64
  Architecture: amd64
  CheckboxSubmission: fdbdfcded0c0bb479a6b52e9ec5af131
  CheckboxSystem: edda5d4f616ca792bf437989cb597002
  Date: Tue Apr 19 18:52:39 2011
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007.1)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: pitivi
  UpgradeStatus: Upgraded to natty on 2011-01-30 (79 days ago)

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