Shifted movie strip when rendering <100% resolution for strip with complex transform #33295

New Issue

Mayeul Kauffmann · 2012-11-25T00:39:12+01:00

Mayeul Kauffmann commented

2012-11-25 00:39:12 +01:00

%%%See the first screenshot:
I have 4 strips to be rendered in four parts of the screen. The problem is with the lower left one (with the two guys, one with a white shirt and another with a green T-shirt [me]). On the VSE preview (top-middle of the screenshot, it is perfect. It renders perfectly as well when I render at 100% resolution.
On the right of the screenshot (within blender), rendered at 50%, only part of this image is visible as it is shifted.
On the top-left of the screenshot (the "URL - KMPlayer" window), it is rendered at 25% and completely shifted (out of the screen maybe).
The screenshot shows that the transform is quite complex as I needed a well-positioned crop (hence the offset), then scale, then move the result (hence the position values). And you'll notice I first flipped on x.
However, on the underliying strip ("Robert guide 2"), I used no offset, crop, nor flip (you cannot see this in the screenshot).

On the 3 other parts of the scene, I used only some of those techniques to crop/shift/move the small strips. So this is really the combination of all of those that create the problem.

On the second screenshot: problem is the reverse: the shift is in the preview (top left) when rendering engin is set to render at less than 100%, but there is no shift on the render output (bottom right), whaterver the resolution.

The bug in the second screenshot is a small annoyance, workaround being to set 100% resolution when you position the bits. The bug in the first screenshot prevents correct rendering at less than 100% so is pretty much annoying.
1st example is on movie strip, 2nd on image sequence.

Using plain Blender 2.64.0 r51232 (dowloaded from Blender website) on Kubuntu 11.04, 64 bits.

Mayeul

PS: the blender file itself is 30MB (without any of the images); that would require a lot of cleanup to reduce it to something uploadable, I may try if nobody can reproduce.

%%%

%%%See the first screenshot: I have 4 strips to be rendered in four parts of the screen. The problem is with the lower left one (with the two guys, one with a white shirt and another with a green T-shirt [me]). On the VSE preview (top-middle of the screenshot, it is perfect. It renders perfectly as well when I render at 100% resolution. On the right of the screenshot (within blender), rendered at 50%, only part of this image is visible as it is shifted. On the top-left of the screenshot (the "URL - KMPlayer" window), it is rendered at 25% and completely shifted (out of the screen maybe). The screenshot shows that the transform is quite complex as I needed a well-positioned crop (hence the offset), then scale, then move the result (hence the position values). And you'll notice I first flipped on x. However, on the underliying strip ("Robert guide 2"), I used no offset, crop, nor flip (you cannot see this in the screenshot). On the 3 other parts of the scene, I used only some of those techniques to crop/shift/move the small strips. So this is really the combination of all of those that create the problem. On the second screenshot: problem is the reverse: the shift is in the preview (top left) when rendering engin is set to render at less than 100%, but there is no shift on the render output (bottom right), whaterver the resolution. The bug in the second screenshot is a small annoyance, workaround being to set 100% resolution when you position the bits. The bug in the first screenshot prevents correct rendering at less than 100% so is pretty much annoying. 1st example is on movie strip, 2nd on image sequence. Using plain Blender 2.64.0 r51232 (dowloaded from Blender website) on Kubuntu 11.04, 64 bits. Mayeul PS: the blender file itself is 30MB (without any of the images); that would require a lot of cleanup to reduce it to something uploadable, I may try if nobody can reproduce. %%%

Mayeul Kauffmann commented

2012-11-25 00:39:12 +01:00

Changed status to: 'Open'

Mayeul Kauffmann commented

2012-11-25 01:02:55 +01:00

%%%
Edit:
see attached
bug_blender_shift3.png
On a offseted-croped colour strip (the one you do a fade out with if you choose it black), the type 1 bug is there too.%%%

%%% Edit: see attached bug_blender_shift3.png On a offseted-croped colour strip (the one you do a fade out with if you choose it black), the type 1 bug is there too.%%%

Mayeul Kauffmann commented

2012-11-25 01:06:25 +01:00

%%%attached file 3%%%

Sergey Sharybin commented

2012-11-26 18:45:02 +01:00

%%%Please always attach sample .blend file which demonstrates the issue. It always saves a lot of time trying to understand your particular setup. You could replace strips with image strips in a new file.

Also please test testbuild1 from http://download.blender.org/release/Blender2.65/ where this issue could have been already fixed.%%%

%%%Please always attach sample .blend file which demonstrates the issue. It always saves a lot of time trying to understand your particular setup. You could replace strips with image strips in a new file. Also please test testbuild1 from http://download.blender.org/release/Blender2.65/ where this issue could have been already fixed.%%%

Mayeul Kauffmann commented

2012-11-27 18:56:12 +01:00

%%%Thanks for the link.
I just tried with
blender-2.65-testbuild1-linux-glibc27-x86_64.tar.bz2 2012-Nov-23 11:30:48 59.6M
and the bug is still there.
I created a very simple project, which shows a variant of the bug (in between my two examples).
To reproduce: open blender file, you'll see a yellow box (rectangle strip) on top of gray box. Change the resolution (in%), the yellow box moves in the VSE preview. The rendered output changes at well.
Mayeul%%%

%%%Thanks for the link. I just tried with blender-2.65-testbuild1-linux-glibc27-x86_64.tar.bz2 2012-Nov-23 11:30:48 59.6M and the bug is still there. I created a very simple project, which shows a variant of the bug (in between my two examples). To reproduce: open blender file, you'll see a yellow box (rectangle strip) on top of gray box. Change the resolution (in%), the yellow box moves in the VSE preview. The rendered output changes at well. Mayeul%%%

Sergey Sharybin commented

2012-11-28 10:01:29 +01:00

%%%Should be fixed in svn rev52629. Thanks for the report, closing.%%%

Sergey Sharybin commented

2012-11-28 10:01:30 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2012-11-28 10:01:30 +01:00

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Shifted movie strip when rendering <100% resolution for strip with complex transform #33295