A few ideas

[introvertedcreature]

-Add an option to scan the whole video (keyframes & audio waveform) upon opening
-Hide the audio waveform if there's no audio track
-Some options reset between restarts, avoid that if possible

Sorry if some/all of these have been suggested already

[mifi]

-Add an option to scan the whole video (keyframes & audio waveform) upon opening

see #260

-Hide the audio waveform if there's no audio track

I have improved this now, thanks

-Some options reset between restarts, avoid that if possible

#371