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VSE: Waveforms unnecessary redrawn on offset change
Open, Confirmed, HighPublic

Description

Reproduce:

Select Audio Strip
Check Display Waveform (Properties Panel > Adjust > Sound > Display Waveform)
Adjust Start/End frames of the Hold Cut (Properties Panel > Time > Hold Offset Start/End
Usually only happens when adjusting the End frame for me
The first couple adjustments don't reproduce the error. Must adjust several times.
Workaround:

In order to refresh the audio to see the waveforms again, follow these steps:

Save your file
Go to File > Open Recent > The file you just saved

Event Timeline

Richard Antalik (ISS) lowered the priority of this task from Needs Triage by Developer to Confirmed, High.Sep 16 2019, 1:18 AM
Richard Antalik (ISS) created this task.

@Sergey Sharybin (sergey), this happens, because waveform is freed in sound_load_audio() when sound length is queried. Do you think, that freeing waveform is necessary here?