When I add an .mp3 sound file to the VSE and go to Playback and check Audio Scrubbing, I don't get the waveform. Why?
2 Answers
Turning on the waveform display is a separate setting in the 'View' menu:
If you have a long MP3, you may have to wait for the previews to generate (after turning 'Waveforms On'):
When you have one or multiple Sound strips you can check Draw Waveform in the Strip Properties' Sound Panel (on the right, open VSE's Properties Panel pressing the N key).
When you want to set the behaviour for all Strips you can do so since the work on the gooseberry branch. They introduced this Feature there directly in the VSE's Menu Bar, but later implemented it in the Master Branch into the View menu with an own submenu Waveform Drawing where you can switch between two global options for turning Waveforms On or Off for all strips or let each strip determine on it's on property as described above whether or not to display its Waveform via Use Strip Option.
(You can script this if needed)
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1$\begingroup$ Just as a note, while some people do like to highlight with backticks (``) that is generally reserved for highlighting code. $\endgroup$ Dec 17, 2015 at 15:19