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Maniphest T78573

Blender 2.831 - VSE - crash at remove strips.
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Description

System Information
Operating system: Windows 10
Graphics card: Nvidia GTX970 x 2

Blender Version
Blender 2.831

Short description of error

Blender crash when I try to remove stripfrom Video Sequencer editor.

Exact steps for others to reproduce the error
Simple add any strip ( image sequnces ) , add other , play with it. Try to remove and than - boom.
Blender crash. No errors - simply vanish.

Best Regards
strawbverryblur

Revisions and Commits

rB Blender
D8256rB0471349c90df Fix T78573: Crash when removing strips with prefetching
D8256rB77f823a2401c Fix T78573: Crash when removing strips with prefetching

Related Objects

Event Timeline

Piotr Reczek (strawberryblur) created this task.Jul 3 2020, 1:35 PM
Rabit (Rabit) added a subscriber: Rabit (Rabit).Jul 5 2020, 8:55 AM

Yep, affecting me too. I think it's somehow related to the prefetch frames mechanism - when it's working on the erasing strip there are ~100% chance to crash.

OS: Ubuntu 18.04
Graphics: Radeon R9 FURY
Blender: 2.83.1

Crash file attached:

project.crash.txt515 BDownload

There is no useful lines in the stdout/stderr

Thank you

Richard Antalik (ISS) changed the task status from Needs Triage to Confirmed.Jul 8 2020, 1:36 AM
Richard Antalik (ISS) triaged this task as High priority.
Richard Antalik (ISS) added projects: Video Sequencer, VFX & Video.
Richard Antalik (ISS) changed the subtype of this task from "Report" to "Bug".
Richard Antalik (ISS) added a subscriber: Richard Antalik (ISS).

I have noticed this in last editing session. Thanks for narrowing this down, I haven't made connection with deleting strips.

Piotr Reczek (strawberryblur) added a comment.Jul 8 2020, 12:37 PM

Make some test lately.
It's combine with "prefetch frames" , when I disable it ( uncheck ) that it behaves good - You can delete frames without crash.
Till now at least.

Best Regards
strawberryblur

Sergey Sharybin (sergey) moved this task from Backlog to Blender 2.90 on the VFX & Video board.Jul 8 2020, 12:50 PM
Sergey Sharybin (sergey) edited projects, added BF Blender (2.90); removed BF Blender.
Richard Antalik (ISS) added a revision: D8256: Fix T78573: Crash when removing strips with prefetching.Jul 9 2020, 1:53 PM
Richard Antalik (ISS) closed this task as Resolved by committing rB77f823a2401c: Fix T78573: Crash when removing strips with prefetching.Jul 10 2020, 4:17 PM
Richard Antalik (ISS) claimed this task.
Richard Antalik (ISS) added a commit: rB77f823a2401c: Fix T78573: Crash when removing strips with prefetching.
Rabit (Rabit) added a comment.Jul 10 2020, 10:55 PM

So the change will be added only to 2.9? Do you have plans to integrate it to 2.83 LTS?

Richard Antalik (ISS) added a comment.Jul 10 2020, 11:19 PM

Since it is crash it should be ported over to LTS, but first 2.9 has to be fixed.

Jeroen Bakker (jbakker) mentioned this in T77348: Blender LTS: Maintenance Task.Jul 14 2020, 5:21 PM
Evan Wilson (EAW) merged a task: T79064: [VSE] Crash if strip is deleted before frame prefetch cache completes.Jul 19 2020, 1:04 AM
Evan Wilson (EAW) added a subscriber: Jay J (j09).
Jeroen Bakker (jbakker) added a commit: rB0471349c90df: Fix T78573: Crash when removing strips with prefetching.Jul 29 2020, 10:53 AM