Movie clip playback FPS is reduced in 3DView. #74814

New Issue

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 980 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.59

Blender Version
Broken: version: 2.83 (sub 9), branch: master, commit date: 2020-03-15 22:43, hash: f06a6e92bc
Worked: ～2.79

Short description of error
When a movie clip is read into a background image and displayed on a 3D view, the FPS decreases in a sequence of 2K or more.Even in full HD, FPS decreases a little.
There is no problem if you play only with the movie clip editor.
Regardless of file format or file size, resolution seems to be involved.
There was no problem if the resolution was dropped to 2k or less.
Even if the sequence is full HD, the FPS will drop slightly. There is no problem if it is less than Full HD.

Below is a comparison with 2.79 under the same conditions.

2.83
Blender 2020-03-18 21-57-40.mp4

2.79
Blender 2020-03-18 21-56-03.mp4

Exact steps for others to reproduce the error
#74814.blend

Open file
Play animation (and make sure it is not able to play at 1200FPS)

In properties editor, toggle Show Background Image

FPS rate will drop significantly

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 980 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.59 **Blender Version** Broken: version: 2.83 (sub 9), branch: master, commit date: 2020-03-15 22:43, hash: `f06a6e92bc` Worked: ～2.79 **Short description of error** When a movie clip is read into a background image and displayed on a 3D view, the FPS decreases in a sequence of 2K or more.Even in full HD, FPS decreases a little. There is no problem if you play only with the movie clip editor. Regardless of file format or file size, resolution seems to be involved. There was no problem if the resolution was dropped to 2k or less. Even if the sequence is full HD, the FPS will drop slightly. There is no problem if it is less than Full HD. Below is a comparison with 2.79 under the same conditions. 2.83 [Blender 2020-03-18 21-57-40.mp4](https://archive.blender.org/developer/F8413867/Blender_2020-03-18_21-57-40.mp4) 2.79 [Blender 2020-03-18 21-56-03.mp4](https://archive.blender.org/developer/F8413876/Blender_2020-03-18_21-56-03.mp4) **Exact steps for others to reproduce the error** [#74814.blend](https://archive.blender.org/developer/F8427382/T74814.blend) ![text.png](https://archive.blender.org/developer/F8427380/text.png) - Open file - Play animation (and make sure it is not able to play at 1200FPS) # In properties editor, toggle Show Background Image FPS rate will drop significantly

Added subscriber: @KNAO

Added subscriber: @iss

Changed status from 'Needs Triage' to: 'Needs User Info'

@KNAO

If the sequence data read on the Movie clip editor is larger than around 1 frame 250KB

I am not sure if I understand you correctly
Are you trying to load sequence of files?
Is file size supposed to be greater than 250kB?
What is format of your files(jpeg/png/...) ?
Can you share at least one image you used? If you can test if this happens with sequence of copies of same file.
Can you share .blend file, so we can see your settings are OK?

The same is true on 3Dview.（24FPS＞5～8FPS）

I don't understand how you compared performance of movie clip editor to 3D viewport, these are very different editors.

@KNAO >If the sequence data read on the Movie clip editor is larger than around 1 frame 250KB I am not sure if I understand you correctly Are you trying to load sequence of files? Is file size supposed to be greater than 250kB? What is format of your files(jpeg/png/...) ? Can you share at least one image you used? If you can test if this happens with sequence of copies of same file. Can you share .blend file, so we can see your settings are OK? >The same is true on 3Dview.（24FPS＞5～8FPS） I don't understand how you compared performance of movie clip editor to 3D viewport, these are very different editors.

Sorry.I re-examined it under multiple conditions and rewrote the problem.

Changed status from 'Needs User Info' to: 'Confirmed'

Added subscriber: @Sergey

@iss, I do have some FPS drop, but seems to be within expected threshold. How much FPS loss happens in your case?

in 2.90 I get
65FPS without background image
25FPS with background image

in 2.83 I get
125FPS without background image
47FPS with background image

in 2.90 I get 65FPS without background image 25FPS with background image in 2.83 I get 125FPS without background image 47FPS with background image

With image data, the results are still different. We have prepared the data.
This is a lightweight sequence data converted to JPEG, but it has a FPS drop.
test.zip

With image data, the results are still different. We have prepared the data. This is a lightweight sequence data converted to JPEG, but it has a FPS drop. [test.zip](https://archive.blender.org/developer/F8643628/test.zip)

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Movie clip playback FPS is reduced in 3DView. #74814

In properties editor, toggle Show Background Image