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Maniphest T47724

VSE crops video if horizontal resolution isn't divisible by 8
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Description

System Information
SUSE Linux Leap 42.1
NVidia GTX 560ti (official drivers)

Blender Version
Broken: 2.76 48f7dd6
Worked: hasn't worked at least as far back as 2.60

Short description of error
Video clips with a horizontal resolution not cleanly divisible by 8 are cropped on the right side by about 6px. Vertical resolution doesn't seem limited to multiples of 8.

Exact steps for others to reproduce the error

  • open attached vse_video_resolution_crop.blend (project resolution already set to 854x480 16:9)
  • add attached 854x480_16x9_chart.mp4
  • make sure VSE preview is 1:1 view
  • right side is cropped by ~6px

vse_video_resolution_crop.blend86 KBDownload

Revisions and Commits

rB Blender
rB7ab2e7349409 Fix T47724: VSE crops video if horizontal resolution isn't divisible by 8
rB9ddd83cec215 Fix T47724: VSE crops video if horizontal resolution isn't divisible by 8
rB606f6b79eabc Fix T47724: VSE crops video if horizontal resolution isn't divisible by 8

Related Objects

Event Timeline

Paul R (intracube) created this task.Mar 8 2016, 4:11 PM
Paul R (intracube) raised the priority of this task from to 90.
Paul R (intracube) updated the task description. (Show Details)
Paul R (intracube) added a project: BF Blender.
Paul R (intracube) edited a custom field.
Paul R (intracube) added a subscriber: Paul R (intracube).

Example:

Campbell Barton (campbellbarton) lowered the priority of this task from 90 to 50.Mar 9 2016, 3:31 AM
Campbell Barton (campbellbarton) added a subscriber: Campbell Barton (campbellbarton).
Campbell Barton (campbellbarton) assigned this task to Sergey Sharybin (sergey).Mar 9 2016, 3:35 AM
Paul R (intracube) added a comment.Mar 9 2016, 5:42 PM

if it helps track down the issue;

The number of cropped pixels is exactly the remainder after dividing the video width by 8.

Campbell Barton (campbellbarton) added a comment.Mar 10 2016, 6:03 AM

Note that VLC and MPlayer can load this video properly.

Sergey Sharybin (sergey) changed the task status from Unknown Status to Resolved by committing rB606f6b79eabc: Fix T47724: VSE crops video if horizontal resolution isn't divisible by 8.Mar 10 2016, 9:22 AM
Sergey Sharybin (sergey) added a commit: rB606f6b79eabc: Fix T47724: VSE crops video if horizontal resolution isn't divisible by 8.
Paul R (intracube) mentioned this in T47766: VSE patch affects scaling of CbCr planes.Mar 11 2016, 10:09 PM
Paul R (intracube) added a comment.Mar 11 2016, 10:17 PM

Unfortunately the patch has introduced some weirdness with the CbCr up-scaling. See T47766

Sergey Sharybin (sergey) added a commit: rB9ddd83cec215: Fix T47724: VSE crops video if horizontal resolution isn't divisible by 8.Mar 15 2016, 9:40 AM
Sergey Sharybin (sergey) added a commit: rB7ab2e7349409: Fix T47724: VSE crops video if horizontal resolution isn't divisible by 8.