Maniphest T76066

Jittering when rendering image sequence
Closed, Archived
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Assigned To
Richard Antalik (ISS)
Authored By
Constantine Vojik (costavojik)
Apr 24 2020, 8:54 PM
Tags
  • BF Blender
  • VFX & Video
Subscribers
Ankit Meel (ankitm)
Constantine Vojik (costavojik)
Richard Antalik (ISS)

Description

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87

Blender Version
Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-04-23 21:08, hash: rB826f6dd9ee20

Short description of error
Frames are jumping around when using image sequence

Exact steps for others to reproduce the error
just add an image sequence of some movement and see the result

Event Timeline

Constantine Vojik (costavojik) created this task.Apr 24 2020, 8:54 PM
Ankit Meel (ankitm) changed the task status from Needs Triage to Needs Information from User.Apr 25 2020, 3:24 PM
Ankit Meel (ankitm) added a subscriber: Ankit Meel (ankitm).

Please add a simple blend file along with a sequence to redo the bug. even which workspace to use isn't clear here.

Constantine Vojik (costavojik) added a comment.Apr 25 2020, 3:37 PM

Ok I finally understood what is happening...
It's just when you add a Image Strip to video sequence editor, when you browse if you sort by "Modified Date" and add the Image Strip the result video is jittery

Example file

bug.zip2 MBDownload

Ankit Meel (ankitm) added a project: VFX & Video.Apr 25 2020, 3:49 PM

It is also seen in the orange strip which looks buggy.

Ankit Meel (ankitm) changed the task status from Needs Information from User to Needs Triage.May 1 2020, 4:57 PM
Richard Antalik (ISS) closed this task as Archived.May 4 2020, 12:21 PM
Richard Antalik (ISS) claimed this task.
Richard Antalik (ISS) added a subscriber: Richard Antalik (ISS).
In T76066#917591, @Ankit Meel (ankitm) wrote:

It is also seen in the orange strip which looks buggy.

It's not buggy, it just represents reality - some frames were skipped due to AV sync

In T76066#917583, @Constantine Vojik (costavojik) wrote:

Ok I finally understood what is happening...
It's just when you add a Image Strip to video sequence editor, when you browse if you sort by "Modified Date" and add the Image Strip the result video is jittery

Example file

bug.zip2 MBDownload

Yes this will happen if you don't sort images by name. Technically this is a feature in case you have files generated chronologically, but with random names. I don't know if it was designed that way, but it is not bug.