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Maniphest T54956

Unable to add scene into video sequencer unless there are more than one scenes
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Description

How to see it:

  • Open blender and use default cube to perform some simple animation.
  • Turn on the automatic keyframe insertion (red round button on the timeline)
  • Hold down Ctrl and pull the manipulator as if you're trying to move the cube, but release as soon as a keyframe is inserted at 1 position on timeline.
  • Now move the timeline to 60th position, drag the cube on Y axis, press 'R' to perform some arbitrary rotations. A new keyframe will be inserted at 60th position.
  • Put the mouse cursor on timeline and press 'e' to End the sequence.
  • Notice now the 'Scene' register, there is only the default 'scene'.
  • Put the mouse pointer at the top right triangle to drag right, creating another screen.
  • Turn this screen into 'Video Sequencer'
  • On the sequencer, Add->Scene, and nothing there to be inserted (this used to work in the older versions)
  • Click '+' on the 'Scene' to create 'Scene.001', using 'Full copy', notice on the 'Outliner', there will be two scene, 'Cube' of 'Scene' and 'Cube.001' of 'Scene.001' are DIFFERENT objects. They DO NOT share the same mesh nor material (check the list of material as well).
  • On 'Scene.001' now, move the green cursor to 30th position and perform a transform on the Cube.001, move it up on Z for instance. The new keyframe is inserted on 'Scene.001'
  • Now go back to the Video Sequencer, 'Add->Scene', you'll see 'Scene' appears in the list. Add that.
  • Now drag the green line to move across and you'll find the movements are from 'Scene.001', and NOT from 'Scene'.

The tested file is included:

20180504_adding_scene_to_video_sequence_editor_0001.blend537 KBDownload

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Hoang Duy Tran (hoangduytran) renamed this task from Unable to add scene into video sequencer unless there are more than one scene to Unable to add scene into video sequencer unless there are more than one scenes.May 4 2018, 6:38 PM
Hoang Duy Tran (hoangduytran) created this task.
Hoang Duy Tran (hoangduytran) added a comment.May 4 2018, 9:51 PM

Just to add some new discoveries:

  • In the above example, I drag out a new window and set it to Video Sequencer, and there is a clip from 'Scene' there.
  • Now if you switch the view to 'Video Editing' layout, the instance of Video Sequencer (bottom) is EMPTY. The video sequence is NOT there.
  • Checked this against version 2.78c (2017-02-24 14:33, hash: 092f2352830) and it works as expected in this older version.
Philipp Oeser (lichtwerk) changed the task status from Unknown Status to Archived.May 7 2018, 1:48 PM
Philipp Oeser (lichtwerk) claimed this task.
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).

First things first: This was an intentional change in rB175e8fdc1e2e
Also see T52586

Regarding the other issues:

Now drag the green line to move across and you'll find the movements are from 'Scene.001', and NOT from 'Scene'.

I believe you are observing the 3DView? So yes, you are in Scene.001 and the 3DView will represent movements of Scene.001
If you want to see what the strip of Scene looks like in the VSE, you will have to enable the VSE preview, see the manual

Now if you switch the view to 'Video Editing' layout, the instance of Video Sequencer (bottom) is EMPTY. The video sequence is NOT there.

Thats because the screen layout also remebers it's last scene. So without you noticing it, it changed it back to Scene (not Scene.001) -- and in Scene the VSE is empty (you added the scene strip to Scene.001, right?)
Also see the manual (the "Hint" part)

Summing it up: I dont think there is a bug here? Closing (feel free to comment if there was a misunderstanding here...)

Hoang Duy Tran (hoangduytran) added a comment.EditedMay 7 2018, 7:46 PM

Here is an image comparing the two version, at the same screen,

  1. Version 2.78c - I can see the entry for 'Scene' when trying 'Add':

  1. Version 2.79.4 - I can't see the entry for 'Scene' when trying 'Add':

Please take a look at this again.

Philipp Oeser (lichtwerk) added a comment.May 8 2018, 1:31 PM

Like I said, this was disabled intentionally (you cannot add a scenestrip into the same scene anymore), please read rB175e8fdc1e2e and T52586 again.

Hoang Duy Tran (hoangduytran) added a comment.May 8 2018, 2:57 PM

I'm sorry for repeating myself and not reading on the greater issues the software is facing. Thank you for being patient with me Philipp.
Cheers.