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Smooth fade in slow motion

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Joost Rol
Smooth fade in slow motion
on Aug 13, 2016 at 8:49:52 am

Hey everyone,

I want to make a clip so that it starts at 100% speed, and smooth and slowly fades into 50% speed.
So NOT '100% speed > next frame > 50% speed'.
If anyone knows how to do this I would love to hear it. Thank you so much! :D

- Joost


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László Kovács
Re: Smooth fade in slow motion
on Aug 13, 2016 at 10:35:15 am

Hi,

select the event, and from the menu "insert" choose video envelopes, and "event velocity.
You can add then points to that line by double clicking. You can drag these points, or right click, and set to...
It's quite intuitive from this point ;)

Unfortunately, audio will be out of sync if you do this way.
If you need audio in sync after motion slowed down:
Split your event at the point, where you know you need th 50% speed, and set the playback rate to 50% for the right event (after split).
Apply the velocity envelope to the original (left to the split) event.
Add the points to he envelope, and set the last one to 50%.
Now you see, that because of the slowdown, the ending timecode of the left event is not consistent with the starting time code of your right event. You can drag the right side of the left event (with the envelope), so that the ending timecode should be the starting of your right event - 1 frame.
You can do a split edit, so that the audio of your right clip crossfades with the original.
If you do this way, the audio of the slow-mo will be in sync, and there will be no jump in the picture when your right clip starts.
In case you modify the velocity envelope, you have to retweak the ending point...

Hope I could help

Regards


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László Kovács
Re: Smooth fade in slow motion
on Aug 13, 2016 at 10:47:25 am

Here's a picture, what I mean (tried to magnify timeline) :


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Joost Rol
Re: Smooth fade in slow motion
on Aug 17, 2016 at 6:03:30 pm

Thank you so much László! You're a lifesaver!


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László Kovács
Re: Smooth fade in slow motion
on Aug 17, 2016 at 7:33:02 pm

You're welcome. I'm glad I could help :)


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