Sequencer Scene Strips' Input(3D/Sequencer) and volume and has no effect on audio. #66117
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Reference: blender/blender#66117
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System Information
Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: Intel(R) UHD Graphics 600 Intel 4.5.0 - Build 24.20.100.6137
Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-06-23 22:45, hash:
9c5d54bfaf
Worked: (optional)
Short description of error
The volume floatproperty of Scene strips(in the Sidebar) has no effect and selecting Input: 3D or Sequencer has no effect on what sound are heard. Both will always be heard.
Exact steps for others to reproduce the error
Add a speaker to the 3d view.
Add a sound file to the speaker from first frame.
In the sequencer add a sound file from first frame.
Boths sound should be heard when playing.
Add a new(!) scene.
In the sequencer add a scene strip.
In the Sidebar in the Scene strip sub panel changing the input will not change what sound is heard.
In the Sidebar in the Scene strip sub panel changing the volume will not have any effect.
A blend file, where the above has been done - so to experience the bug change input and change volume:
Scene_Strip_Volume_No_Effect.blend
And two audio files if the packing didn't work
433725__disagree__running-on-ground.flac
204341__bunting__birds-in-aviary.wav
Added subscriber: @tintwotin
Added subscribers: @neXyon, @Sergey
I did my best attempt to bring behavior closer to 2.79, but this was never working reliably. Attached demo file which can work in 2.79. Toggling "Use sequencer" in the Scene strip doesn't do proper update once 3D sound was used once.
The audio and 3D sound system needs a proper integration into dependency graph and no longer rely on the forced updates from so many areas. And on top of that, we need to have a clear design on how and when is being used in the sound scene.
#66117.blend
That would be really nice! I'd love to see
sound_update_base
andBKE_sound_update_scene
gone. The biggest issue here is animation. Whenever some audio animation (volume, pitch, etc.) changes, all affected frames need updating. If that's possible with the dependency graph, that would be ideal! E.g., if an animation is changed by modifying the f-curve, that parameter needs to be updated for all frames that now have a different value.Added subscriber: @jaker-3
Perhaps this problem is related (I cautiously ask here instead to register a new bug).
(Save, quit and open the .blend file)
Now I need to switch between/toggle "Camera" and "Sequencer" to hear the sound from the scene strip when I press "Play Animation". When I render it will be without sound.
Blender 2.80 (sub 74), branch: master, commit date: 2019-06-29 20:58, hash:
be060c3990
@jaker-3, this doesn't sound related. In any case it is much easier to merge reports if investigation indeed shows they are related than to split unrelated ones.
So please make a new report and CC/assign it to me.
@neXyon, here is a patch which is likely needed to sanitize things a bit.
The reason i've initially added a code which adds all speakers to the depsgraph is because the confusion coming from 2.79:
After thinking bit more now, i think we should only use speakers from scene if sequencer of that scene is NOT used (there is no sequencer in it, or strip using that scene is set to Camera. Keep in mind, it is no longer possible to use scene in it's own sequencer).
Think the main missing part is somehow removing sound when it's no longer needed/used: currently there are quite a bit cases when sound will not be gone during playback for until file is re-open, even though i am trying my best to enforce that from a dependency graph. This is something where i hope you can help :)
0001-Depsgraph-Only-use-speakers-if-scene-sequencer-is-no.patch
Removed subscriber: @tintwotin
Since I didn't get a response from you anymore on blender.chat and I don't have the required background knowledge, I'll assign this bug to you @sergey.
Added subscriber: @iss
I will merge this report to another one, because it is the same underlying issue.
Closed as duplicate of #69444