Video fade causes Theora Y444 output instead of I420

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)