VSE: Proxy smaller than 100% produces wrong sizes in the preview window when using Offset or Crop for movie/image strips #78579

New Issue

Neon Cipher · 2020-07-03T17:30:39+02:00

Neon Cipher commented

2020-07-03 17:30:39 +02:00

System Information
Operating system: Linux-4.9.0-12-amd64-x86_64-with-debian-9.12 64 Bits
Graphics card: Gallium 0.4 on AMD KAVERI (DRM 2.49.0 / 4.9.0-12-amd64, LLVM 3.9.1) X.Org 4.3 (Core Profile) Mesa 13.0.6

Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-07-02 22:21, hash: 5a13f682ee
Worked: (newest version of Blender that worked as expected)

Short description of error
When using Offset or Crop for an input strips, the size of those strips will be displayed incorrectly in the preview window if I use Proxy different than 100%.
This bug affects both movie and image strips and causes wrong visualization only in the preview window, the actual resulting output renders correctly.
It looks like Crop and Offset is applied without compensating for the altered proxy footage dimensions. They should be compensated for the proxy size.
I recorded a screencast with the steps to reproduce the bug:
https://youtu.be/VrmboFHjBFA

Exact steps for others to reproduce the error

Add a movie strip 1920x1080 px (http://neoncipher.net/video-1920x1080.mp4)
Add a movie strip 640x480 px (http://neoncipher.net/video-640x360.mp4)
What we want to do is to put the smaller footage above the bigger to get "picture-in-picture" effect:

select the 640x480 strip
check "offset" in the strip's adjusting properties to make the strip go to it's real non-stretched size
select "Alpha over" as Blend in the strip's adjusting properties

Note the correct size of the 640x480 image in the preview window.
Set and build 25% proxies for both strips
In the preview window select View --> Fit preview in window
Choose proxy size 25% in the view settings.
Note how tiny the 640x480 footage's image has become in the preview window (left bottom corner).
When you change Position X or Y in the 640x480's strip Offset section, the image temporarily becomes a bit bigger (but still not correct size) in the preview window, but after clicking somewhere in the sequencer strip's area, becomes tiny again.
attached .blend file proxies-bug.blend

**System Information** Operating system: Linux-4.9.0-12-amd64-x86_64-with-debian-9.12 64 Bits Graphics card: Gallium 0.4 on AMD KAVERI (DRM 2.49.0 / 4.9.0-12-amd64, LLVM 3.9.1) X.Org 4.3 (Core Profile) Mesa 13.0.6 **Blender Version** Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-07-02 22:21, hash: `5a13f682ee` Worked: (newest version of Blender that worked as expected) **Short description of error** When using Offset or Crop for an input strips, the size of those strips will be displayed incorrectly in the preview window if I use Proxy different than 100%. This bug affects both movie and image strips and causes wrong visualization only in the preview window, the actual resulting output renders correctly. It looks like Crop and Offset is applied without compensating for the altered proxy footage dimensions. They should be compensated for the proxy size. I recorded a screencast with the steps to reproduce the bug: https://youtu.be/VrmboFHjBFA **Exact steps for others to reproduce the error** 1. Add a movie strip 1920x1080 px (http://neoncipher.net/video-1920x1080.mp4) 2. Add a movie strip 640x480 px (http://neoncipher.net/video-640x360.mp4) 3. What we want to do is to put the smaller footage above the bigger to get "picture-in-picture" effect: - select the 640x480 strip - check "offset" in the strip's adjusting properties to make the strip go to it's real non-stretched size - select "Alpha over" as Blend in the strip's adjusting properties 4. Note the correct size of the 640x480 image in the preview window. 5. Set and build 25% proxies for both strips 6. In the preview window select View --> Fit preview in window 7. Choose proxy size 25% in the view settings. 8. Note how tiny the 640x480 footage's image has become in the preview window (left bottom corner). 9. When you change Position X or Y in the 640x480's strip Offset section, the image temporarily becomes a bit bigger (but still not correct size) in the preview window, but after clicking somewhere in the sequencer strip's area, becomes tiny again. attached .blend file [proxies-bug.blend](https://archive.blender.org/developer/F8661752/proxies-bug.blend)

Neon Cipher commented

2020-07-03 17:30:39 +02:00

Added subscriber: @neoncipher

Richard Antalik commented

2020-07-04 00:44:08 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-07-04 00:44:08 +02:00

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

Richard Antalik commented

2020-07-04 00:44:08 +02:00

This comment was removed by @iss

*This comment was removed by @iss*

Simon commented

2020-07-06 14:15:19 +02:00

Added subscriber: @mrlemonyfresh

Simon commented

2020-07-06 14:17:53 +02:00

This is particularly troubling when creating tutorials using the sequencer. If you do any zoom ins on menu items or text, it's quite hard to recognise what you're looking at.

blender-admin commented

2020-07-10 16:14:10 +02:00

This issue was referenced by 5372924983

This issue was referenced by 537292498324808c4621f0a749e9f48ee40da7be

Richard Antalik commented

2020-07-10 16:18:42 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Richard Antalik closed this issue

2020-07-10 16:18:42 +02:00

Richard Antalik self-assigned this 2020-07-10 16:18:42 +02:00

Thomas Dinges added this to the 2.90 milestone 2023-02-08 16:26:17 +01:00

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VSE: Proxy smaller than 100% produces wrong sizes in the preview window when using Offset or Crop for movie/image strips #78579