Page MenuHome

Wipe effect starts and stops to early with blur enabled.
Closed, ResolvedPublic

Description

--- Operating System, Graphics card ---
NA

--- Blender version with error, and version that worked ---
2.65 has the bug.

--- Short description of error ---
When using a wipe effect in the video sequence editor to cut between clips, you can set a "blur width" which blurs the transition. It works well, *except* it doesn't change the position of transition line centre, which means that at the beginning and end of the wipe, both clips are still visible, and then the wipe blur is suddenly removed on the next frame.

--- Steps for others to reproduce the error (preferably based on attached .blend file) ---

1. New file.
2. Go to Sequence Editor
3. Add->Effect Strip->Colour (or whatever)
4. Add two colour strips (or any film clip) to tracks one and two, overlapped.
5. Select the first one, then shift-select the second.
6. Add->Effect Strip->Wipe
7. In the wipe settings, increase the blur width (e.g. to 0.5).

The result is attached.

Note that the wipe jumps in and out suddenly.

Event Timeline

Commited small tweak to svn rev53892. From commit message:

Made small tweaks which now limits blur width in a way it can not be wider than distance between frame boundary and wipe effect center. It eliminates weirdeness of how blur appears/disappears in cases effect fac is close to 0/1.

Could be tweaked further but will require effect rewrite it seems.

Wouldn't mind if someone will recode wipe, but that's not considered a bug. Thanks for the report, closing.

Sergey Sharybin (sergey) changed the task status from Unknown Status to Resolved.Jan 18 2013, 10:37 AM