Blackmagic Forum

hi, i found an option to change the speed of an clip.

Is there an option to accelerate an clip?

So the clip-duration is 1 minute. You click accelerate and it´s 1again minute. But the start of the clip is runs slower then the end. The end quicker then before adding the accerearing-function.

Something like that. Thank you!

Not exactly continuously. You have to keep adding speed points with higher and higher speeds (or keyframe the speed; same thing), then change the interpolation between the speed points/keyframes from linear to smooth. In practice, you don't need a ton of them. Premiere's the same way, where speed "ramps" aren't really ramps, but steps with soft slopes.

For your clip to be a minute long both before and after the operation, it'd need to have extra media at the end, just because speeding up anything will make it shorter. So, I'll often use the Trim tool to roll out the outgoing edit and put it back at a minute, if that's where it needs to be.

That´s working. Thank you. What is the difference between the 2 options in the middle?

https://i.imgur.com/QGhBxDM.png

The bendy one on the left is the smoothing I was talking about. It'll give you bezier handles on the re-time curve to set the duration of smoothing. The button on the right is linear interpolation.