VSE: With "Hold offset" snap on, invisible snap-to frame appears one frame from left edge of certain strip types #90835

New Issue

David Salvo · 2021-08-21T19:25:54+02:00

David Salvo commented

2021-08-21 19:25:54 +02:00

System Information
Operating system: Linux-5.4.0-81-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: GeForce 9800 GT/PCIe/SSE2 NVIDIA Corporation 3.3.0 NVIDIA 340.108

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-08-18 20:22, hash: a217e043be
Worked: Unsure

Short description of error
This bug occurs only when the "Hold offset" snap option is toggled on.

There is a phantom third snap-to frame apart from left and right edge that exists one frame from the left edge of the strip, but only for the following strip types:

Image
Colour
Text
Adjustment
Multicam

The following strip types aren't affected:

Movie
Sound
Meta

(Note: that the strip type of the grabbed/moving strip does not matter).

Exact steps for others to reproduce the error
third-phantom-snap-point-on-certain-strip-types.blend

In the attached blend file there are clusters of all 8 strip types mentioned above (Note: the types that don't show signs of this specific bug are on the higher channels).

For any cluster, grab and drag the bottom strip along x-axis from its starting point at marker slowly all the way until it reaches the right marker. This will allow you to observe the invisible snap frame behaviour (or lack of it),

When observing, keep in mind the behaviour mentioned in this bug report: https://developer.blender.org/T90826

Example of erroneous strip group:

**System Information** Operating system: Linux-5.4.0-81-generic-x86_64-with-glibc2.31 64 Bits Graphics card: GeForce 9800 GT/PCIe/SSE2 NVIDIA Corporation 3.3.0 NVIDIA 340.108 **Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-08-18 20:22, hash: `a217e043be` Worked: Unsure **Short description of error** This bug occurs only when the "Hold offset" snap option is toggled on. There is a phantom third snap-to frame apart from left and right edge that exists one frame from the left edge of the strip, but only for the following strip types: - Image - Colour - Text - Adjustment - Multicam The following strip types aren't affected: - Movie - Sound - Meta (Note: that the strip type of the grabbed/moving strip does not matter). **Exact steps for others to reproduce the error** [third-phantom-snap-point-on-certain-strip-types.blend](https://archive.blender.org/developer/F10300640/third-phantom-snap-point-on-certain-strip-types.blend) In the attached blend file there are clusters of all 8 strip types mentioned above (Note: the types that don't show signs of this specific bug are on the higher channels). For any cluster, grab and drag the bottom strip along x-axis from its starting point at marker slowly all the way until it reaches the right marker. This will allow you to observe the invisible snap frame behaviour (or lack of it), When observing, keep in mind the behaviour mentioned in this bug report: https://developer.blender.org/T90826 Example of erroneous strip group: ![phantom-snap-bug.gif](https://archive.blender.org/developer/F10300698/phantom-snap-bug.gif)

David Salvo commented

2021-08-21 19:25:54 +02:00

Added subscriber: @slinkeepie