Audio of a scene strip can't be muted #38500

New Issue

Paulo José Oliveira Amaro · 2014-02-05T13:47:43+01:00

2014-02-05 13:47:43 +01:00

System Information
Ubuntu 13.10 64-bit
Intel Ironlake Mobile x86/MMX/SSE

Blender Version
2.69.10 f70d966

Short description of error
If there's a Scene strip in VSE and it contain audio, it can't be muted or have its volume controled.

It's common to have the same audio track in different scenes to keep synchrony, but the master scene which combines all scenes has its own audio track. This way, the two audio track overlap and it's no possible to mute the audio from scene strip.

Exact steps for others to reproduce the error
An example file with audio included, to show how it can be problematic. There are 2 scenes, both with the same audio track. For test purposes, the master scene have its scene strip shifted, so you can listen the two audio playing together. The audio strip can be muted, but the volume of scene strip can not.

blender-audio-sequencer.zip

The same can be said about Meta strips, but at least it's ease to get inside it and mute its audio manually.

**System Information** Ubuntu 13.10 64-bit Intel Ironlake Mobile x86/MMX/SSE **Blender Version** 2.69.10 f70d966 **Short description of error** If there's a Scene strip in VSE and it contain audio, it can't be muted or have its volume controled. It's common to have the same audio track in different scenes to keep synchrony, but the master scene which combines all scenes has its own audio track. This way, the two audio track overlap and it's no possible to mute the audio from scene strip. **Exact steps for others to reproduce the error** An example file with audio included, to show how it can be problematic. There are 2 scenes, both with the same audio track. For test purposes, the master scene have its scene strip shifted, so you can listen the two audio playing together. The audio strip can be muted, but the volume of scene strip can not. [blender-audio-sequencer.zip](https://archive.blender.org/developer/F76096/blender-audio-sequencer.zip) The same can be said about Meta strips, but at least it's ease to get inside it and mute its audio manually.

Paulo José Oliveira Amaro commented

2014-02-05 13:47:43 +01:00

Changed status to: 'Open'

Paulo José Oliveira Amaro commented

2014-02-05 13:47:43 +01:00

Added subscriber: @PauloJoseOliveiraAmaro

Sergey Sharybin commented

2014-02-06 08:50:36 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2014-02-06 08:50:36 +01:00

You could hit H to hide the scene strip and it'll also mute the sound. However it'll indeed will also mute the video. But that's rather expected behavior. You could also open second video and have a separate sequencer editor there for the scene with sound.

What i can do is to add Audio Volume to Scene panel of a Scene strip. This way you'll be able to drag slider to 0 and disable audio for a given scene. You'll also be able to create a custom shortcut to toggle it. This ill go to git soon.

You could hit H to hide the scene strip and it'll also mute the sound. However it'll indeed will also mute the video. But that's rather expected behavior. You could also open second video and have a separate sequencer editor there for the scene with sound. What i can do is to add Audio Volume to Scene panel of a Scene strip. This way you'll be able to drag slider to 0 and disable audio for a given scene. You'll also be able to create a custom shortcut to toggle it. This ill go to git soon.

blender-admin commented

2014-02-06 08:50:42 +01:00

This issue was referenced by blender/blender-addons-contrib@2b9702f4bf

This issue was referenced by blender/blender-addons-contrib@2b9702f4bfb4b26a8bcef0288c8fe2d742699184

blender-admin commented

2014-02-06 08:50:42 +01:00

This issue was referenced by 2b9702f4bf

This issue was referenced by 2b9702f4bfb4b26a8bcef0288c8fe2d742699184

Sergey Sharybin commented

2014-02-06 08:51:36 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2014-02-06 08:51:36 +01:00

Sergey Sharybin commented

2014-02-06 08:51:36 +01:00

Closed by commit 2b9702f4bf.

Closed by commit 2b9702f4bf.

Paulo José Oliveira Amaro commented

2014-02-06 17:58:31 +01:00

Perfect solution, Sergey. Thank you!

Paulo José Oliveira Amaro commented

2014-02-07 04:03:16 +01:00

@Sergey, Could you add it to Meta strips too?

Sergey Sharybin commented

2014-02-07 07:19:28 +01:00

No, unfortunately no. For the scene strip you know for fact which volume to control. In fact the change simply exposed value setting from audio panel from the scene buttons.

For metas i could see how it could be useful for you, but that's not so trivial to do. You'll either need to somehow recursive the volume changes down to the strip hierarchy or somehow make system aware of volume override of the meta..

Also not clear the pipeline. For your case you need to mute audio, someone else might want to only mute video. Needs some kind of usability feedback discussion actually.

No, unfortunately no. For the scene strip you know for fact which volume to control. In fact the change simply exposed value setting from audio panel from the scene buttons. For metas i could see how it could be useful for you, but that's not so trivial to do. You'll either need to somehow recursive the volume changes down to the strip hierarchy or somehow make system aware of volume override of the meta.. Also not clear the pipeline. For your case you need to mute audio, someone else might want to only mute video. Needs some kind of usability feedback discussion actually.

Paulo José Oliveira Amaro commented

2014-02-07 08:00:07 +01:00

I see, meta seems to be a little more complicated to control.

I'm not the sound guy, so I'm just speculating, but maybe to control the meta volume may be enough simply to apply the factor to the audio strips inside the meta. For instance:

If meta = { audioStrip1, audioStrip2, audioStrip3 } and volume(x) is the volume property of the strip x,
Then volume(meta) = volume(meta.audioStrip1) + volume(meta.audioStrip1) + volume(meta.audioStrip1)
To apply a 0.5 gain into the meta strip, you can do 0.5 * volume(meta.audioStrip1), 0.5 * volume(meta.audioStrip2), and 0.5 * volume(meta.audioStrip3)

Of course, I can be misunderstanding what you had explain to me. I'm understanding you exposed the value from audio panel from the Scene, and just using it, but not changing it directly. This way, you change actually a local volume property for the scene strip in that specific sequencer. Otherwise, would not to be possible to insert the same scene two times with different volumes in the same sequencer. If it is the case, it would not to be easy to change the meta's volume, since it has no volume property itself, like a scene. And it would give some side effects, like the one I said.

About the pipeline, I'm not ignoring the need of an usability feedback discussion, but to mute only video [of a meta strip] we already have the opacity property, so I can't see the issue about it. Some usability feedback to clear things up would be great here, of course.

I see, meta seems to be a little more complicated to control. I'm not the sound guy, so I'm just speculating, but maybe to control the meta volume may be enough simply to apply the factor to the audio strips inside the meta. For instance: * If meta = { audioStrip1, audioStrip2, audioStrip3 } and volume(x) is the volume property of the strip x, * Then volume(meta) = volume(meta.audioStrip1) + volume(meta.audioStrip1) + volume(meta.audioStrip1) * To apply a 0.5 gain into the meta strip, you can do 0.5 * volume(meta.audioStrip1), 0.5 * volume(meta.audioStrip2), and 0.5 * volume(meta.audioStrip3) Of course, I can be misunderstanding what you had explain to me. I'm understanding you exposed the value from audio panel from the Scene, and just using it, but not changing it directly. This way, you change actually a local volume property for the scene strip in that specific sequencer. Otherwise, would not to be possible to insert the same scene two times with different volumes in the same sequencer. If it is the case, it would not to be easy to change the meta's volume, since it has no volume property itself, like a scene. And it would give some side effects, like the one I said. About the pipeline, I'm not ignoring the need of an usability feedback discussion, but to mute only video [of a meta strip] we already have the opacity property, so I can't see the issue about it. Some usability feedback to clear things up would be great here, of course.

Sergey Sharybin commented

2014-02-14 09:32:28 +01:00

@PauloJoseOliveiraAmaro, sorry for delay.

That wouldn't be a sum i think more like multiplication or so.

Also, discussing such things is not so efficient in the bug tracker. There're not so many artists are reading comments for all the reports here. Better to start some discussion in ML or so.

@PauloJoseOliveiraAmaro, sorry for delay. That wouldn't be a sum i think more like multiplication or so. Also, discussing such things is not so efficient in the bug tracker. There're not so many artists are reading comments for all the reports here. Better to start some discussion in ML or so.

Paulo José Oliveira Amaro commented

2014-02-14 13:41:19 +01:00

Thank you for the tip, @Sergey ! I'll join to the Mail List as soon as I can.

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Audio of a scene strip can't be muted #38500