Bug 367776

Summary:	Volume (keyframable) isn't
Product:	[Applications] kdenlive	Reporter:	Peter <Peter>
Component:	Video Effects & Transitions	Assignee:	Vincent PINON <vpinon>
Status:	RESOLVED FIXED
Severity:	normal	CC:	aslanex, carion.nicolas, jb, snd.noise
Priority:	NOR	Flags:	snd.noise: low_hanging?
Version First Reported In:	16.08.0
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Screen capture of a bug in kdenlive "Volume" effect

Description Peter 2016-08-24 20:13:43 UTC

Creating a fade effect using keyframes in the Volume (keyframable) effect results in one consistent level of volume which seems to match the last keyframe.

The spinner on the effect looks like its getting louder, but this has no effect on audio volume.

Reproducible: Always

Steps to Reproduce:
1. Open a project with audio
2. Slice off a section of the audio and apply a Volume (keyframable) effect
3. Create a keyframe at the end and then take the first keyframe down to -60

Actual Results:  
Clip plays at volume of last keyframe.

Expected Results:  
Clip slowly fades in over time.

This also exists in git version.

Comment 1 aslanex 2016-08-28 17:17:23 UTC

Created attachment 100829 [details]
Screen capture of a bug in kdenlive "Volume" effect

The Volume effect is behaving strange at all. I've attached a screen capture of kdenlive, you can see that the real volume is somehow moved and do not correspond to where I have set the keyframes.

Comment 2 carion.nicolas 2016-09-12 18:22:32 UTC

I don't know if both problems reported here are the same, but I've also experienced Peter's bug. It apparently doesn't happen all the time, but when it does, setting keyframes has not effect on the audio playback.
A weird temporary fix is as follows : when it happens, simply move the audio clip in another track, and the effect gets applied normally (you can then move back to the original track if you want). You may need to repeat if you change the keyframes or add some.

Comment 3 farid 2016-10-05 00:24:06 UTC

I confirm this in 16.08.1,

Comment 4 Jean-Baptiste Mardelle 2016-12-04 16:46:20 UTC

Volume keyframes were seriously broken. Should now be fixed in git and soon to be released 16.12

Comment 5 Vincent PINON 2017-03-08 10:23:48 UTC

Can you confirm that the bug is fixed?

Comment 6 Peter 2017-03-10 22:37:27 UTC

Yep, working on 16.12.2, thanks.