VSE: Splitting Speed effect strip break movie continuity #93577

New Issue

Vitor Boschi · 2021-12-02T16:12:01+01:00

Vitor Boschi commented

2021-12-02 16:12:01 +01:00

System Information
Operating system: Linux-5.11.0-41-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.86

Blender Version
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-12-02 13:40, hash: 23ffcb242d
Worked: this seems to be broken for years

Short description of error
When splitting a strip that has a Speed effect applied, there's a break in continuity of the video: last frame before the split does not match the first frame after the split. As a user, I expect that a split operation keeps continuity.

Exact steps for others to reproduce the error

Add a movie/image sequence strip
Apply a Speed Effect sequence over it, then set Speed Control to Multiply and set it to 10 (any value should work, but higher ones should make the problem easier to spot)
Move the playhead to the middle of the strip and hit K to split it
Check that there's a break in continuity at the split

**System Information** Operating system: Linux-5.11.0-41-generic-x86_64-with-glibc2.31 64 Bits Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.86 **Blender Version** Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-12-02 13:40, hash: `23ffcb242d` Worked: this seems to be broken for years **Short description of error** When splitting a strip that has a Speed effect applied, there's a break in continuity of the video: last frame before the split does not match the first frame after the split. As a user, I expect that a split operation keeps continuity. **Exact steps for others to reproduce the error** 1. Add a movie/image sequence strip 2. Apply a Speed Effect sequence over it, then set Speed Control to Multiply and set it to 10 (any value should work, but higher ones should make the problem easier to spot) 3. Move the playhead to the middle of the strip and hit K to split it 4. Check that there's a break in continuity at the split

Vitor Boschi commented

2021-12-02 16:12:01 +01:00

Added subscriber: @vitorboschi

blender-admin commented

2021-12-02 16:12:01 +01:00

blender/blender-addons#100800 was marked as duplicate of this issue

Vitor Boschi changed title from ~~VSE: Splitting Speed effect strip cause frame mismatch~~ to VSE: Splitting Speed effect strip break movie continuity

2021-12-02 16:12:20 +01:00

Pratik Borhade commented

2021-12-22 07:57:01 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-12-22 10:32:58 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Richard Antalik commented

2021-12-23 06:09:08 +01:00

Added subscriber: @iss

Richard Antalik commented

2021-12-23 06:09:08 +01:00

Indeed this is broken for quite a long time. This is not trivial issue to resolve and must be discussed how to handle this. There are still higher priority design talks though so will classify as known issue for now.

David Salvo commented

2022-01-11 13:52:02 +01:00

Added subscriber: @slinkeepie

Richard Antalik commented

2022-09-05 16:08:25 +02:00

Added subscriber: @blajo

Philipp Oeser removed the

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VSE: Splitting Speed effect strip break movie continuity #93577