VSE: Inserted keyframes under the Transform panel 'Position X' or 'Position Y' are always set to linear interpolation #87222

New Issue

hudson barkley · 2021-04-05T22:10:13+02:00

hudson barkley commented

2021-04-05 22:10:13 +02:00

System Information
Operating system: Windows 10

Blender Version
Broken: 2.92
Worked: (this is a new feature in 2.92)

Short description of error
Inserting keyframes under the VSE 'Transform' panel for Position X or Position Y will result in animation curves using linear interpolation, regardless of what the preferences are set for the default interpolation mode (in my case, it should be bezier). Also note that this does not happen for other values in this panel.

I am including an example gif showing the issue (also including my default value settings for the animation curves):

Exact steps for others to reproduce the error
Add an image or movie strip to the VSE, in the transform panel
Add two keyframes animating the position value
Check the animation curve in the graph editor

**System Information** Operating system: Windows 10 **Blender Version** Broken: 2.92 Worked: (this is a new feature in 2.92) **Short description of error** Inserting keyframes under the VSE 'Transform' panel for Position X or Position Y will result in animation curves using linear interpolation, regardless of what the preferences are set for the default interpolation mode (in my case, it should be bezier). Also note that this does not happen for other values in this panel. I am including an example gif showing the issue (also including my default value settings for the animation curves): ![keyframes.gif](https://archive.blender.org/developer/F9920904/keyframes.gif) **Exact steps for others to reproduce the error** Add an image or movie strip to the VSE, in the transform panel Add two keyframes animating the position value Check the animation curve in the graph editor

hudson barkley commented

2021-04-05 22:10:13 +02:00

Added subscriber: @snuq

Philipp Oeser commented

2021-04-06 09:51:58 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-04-06 09:51:58 +02:00

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

Philipp Oeser closed this issue

2021-04-06 09:51:58 +02:00

Philipp Oeser commented

2021-04-06 09:51:58 +02:00

This seems to be intended behavior (since this is an integer property), see #29073 (Keyframing int properties defaults to bezier), 1768a96774

This might be debatable, but since code is working as expected, I would say this issue reported here is a request for modified/improved behavior and not a bug in current behavior. Closing as this bug tracker is only for bugs and errors. For user requests and feedback, please use other channels: https://wiki.blender.org/wiki/Communication/Contact#User_Feedback_and_Requests
For more information on why this isn't considered a bug, visit: https://wiki.blender.org/wiki/Reference/Not_a_bug

This seems to be intended behavior (since this is an integer property), see #29073 (Keyframing int properties defaults to bezier), 1768a96774 This might be debatable, but since code is working as expected, I would say this issue reported here is a request for modified/improved behavior and not a bug in current behavior. Closing as this bug tracker is only for bugs and errors. For user requests and feedback, please use other channels: https://wiki.blender.org/wiki/Communication/Contact#User_Feedback_and_Requests For more information on why this isn't considered a bug, visit: https://wiki.blender.org/wiki/Reference/Not_a_bug

hudson barkley commented

2021-04-06 10:26:40 +02:00

Considering that the previous method for animating the strip positions that this panel is replacing (the transform strip) behaves entirely differently (its values are floats), I would not consider this to be working as expected.

Maybe I'm missing it... but there seems to be no indication ANYWHERE in the interface that this behavior arbitrarily happens for certain variables and not others... nor is there any way to change this behavior. If this is not a bug, it is definitely an unexpected behavior for anyone animating these values.

Considering that the previous method for animating the strip positions that this panel is replacing (the transform strip) behaves entirely differently (its values are floats), I would not consider this to be working as expected. Maybe I'm missing it... but there seems to be no indication ANYWHERE in the interface that this behavior arbitrarily happens for certain variables and not others... nor is there any way to change this behavior. If this is not a bug, it is definitely an unexpected behavior for anyone animating these values.

Philipp Oeser commented

2021-04-06 10:44:16 +02:00

Changed status from 'Archived' to: 'Needs Developer To Reproduce'

Philipp Oeser reopened this issue

2021-04-06 10:44:16 +02:00

Philipp Oeser commented

2021-04-06 10:44:16 +02:00

Added subscribers: @iss, @dr.sybren, @brecht

Philipp Oeser commented

2021-04-06 10:44:16 +02:00

I would have thought that this stirs debate :)

Will let the (module) devs decide here...

CC @brecht
CC @dr.sybren
CC @iss

I would have thought that this stirs debate :) Will let the (module) devs decide here... CC @brecht CC @dr.sybren CC @iss

Richard Antalik commented

2021-04-06 11:53:25 +02:00

Hmm looking at commit above this seems to be quite hard-coded.
I wouldn't mind using bezier interpolation, integer seemed to be more natural for pixel values in screen space. Float with step of 1 and rounded to whole number would be probably usable here as well.

Question is, @snuq what is scope of your bugreport? Because I can change variable type for transform position, but does this apply to crop? And possibly other integer properties in Blender?

Hmm looking at commit above this seems to be quite hard-coded. I wouldn't mind using bezier interpolation, integer seemed to be more natural for pixel values in screen space. Float with step of 1 and rounded to whole number would be probably usable here as well. Question is, @snuq what is scope of your bugreport? Because I can change variable type for transform position, but does this apply to crop? And possibly other integer properties in Blender?

hudson barkley commented

2021-04-06 12:56:58 +02:00

Frankly, it seems odd to me that any values would be animated linearly instead of by the default mode set by the user, but this is more of an opinion and apparently that is the intended behavior.

I just know that in the case of this panel, it was rather strange behavior that seemed out-of-the-blue and was confusing to a new user of the vse (and to myself as well). Since these variables are commonly animated along with the scale or rotation variables, it seems unexpected for them to behave in a different way.

Maybe the confusion stems from the panel mixing percentages (for the scale) and straight values (the position and cropping as well). Honestly, I don't know what the best solution would be, just that I imagine most people would expect the values to behave in a similar way.

Frankly, it seems odd to me that any values would be animated linearly instead of by the default mode set by the user, but this is more of an opinion and apparently that is the intended behavior. I just know that in the case of this panel, it was rather strange behavior that seemed out-of-the-blue and was confusing to a new user of the vse (and to myself as well). Since these variables are commonly animated along with the scale or rotation variables, it seems unexpected for them to behave in a different way. Maybe the confusion stems from the panel mixing percentages (for the scale) and straight values (the position and cropping as well). Honestly, I don't know what the best solution would be, just that I imagine most people would expect the values to behave in a similar way.

Sybren A. Stüvel commented

2021-04-08 13:16:13 +02:00

Even though it may not be working as expected by new users, this seems to be working as designed. This is thus not a bug in Blender.

Richard Antalik commented

2021-06-03 21:19:36 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Archived'

Richard Antalik closed this issue

2021-06-03 21:19:36 +02:00

Richard Antalik commented

2021-06-03 21:19:36 +02:00

Noticed this report in backlog still open, Closing since this is not a bug.

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VSE: Inserted keyframes under the Transform panel 'Position X' or 'Position Y' are always set to linear interpolation #87222