Playback Speed

BobF wrote on 7/14/2010, 7:24 AM

I've got a timelapse clip that I want to adjust the playback speed on at the end of the clip. I want to slow down the playback speed and draw out the last second or so.

What's the best way to go about this? I've tried a velocity ramp but that didn't work. I added some points to the ramp, dragged one of the points downward but then the entire clip didn't play. If I have, say, a 7 second clip, the velocity ramp slowed down the playback but then all of the images don't fit within the 7 second window. I then have to speed up the front end of the clip to compensate.

I know I can split the clip and stretch the last second or so but that makes the entire clip longer.

Is this a case of there being no free lunch?

Comments

Chienworks wrote on 7/14/2010, 8:04 AM

You want something to play completely at a different speed and yet still take the same amount of time as it did at the original speed? Humbly suggest you look into bending the laws of physics and see how that works for you. ;)

You have several choices, all of which involve using the velocity envelope to slow the end of the clip down

- speed up the beginning of the clip to compensate
- cut off some of the beginning of the clip to compensate
- extend the clip longer to make room

No, there is no free lunch.

xberk wrote on 7/14/2010, 8:05 AM

Not sure this is what you want -- but here goes.

If you event is 7 seconds and you want it to slow down at the end and run 8 seconds
1. add velocity env to the event.
2 Place a point on the velocity env where you want to begin the slow down.
3 Drag the end of the event until it is exactly the desired total new length (8 seconds or so). A notch will appear at the top of the timeline thumbnail. This is the end of the event where it will begin repeating. (If you drag the end of the event past the end of the media file, the event will repeat if the Loop event switch is turned on;).
4. Place another point on the velocity env exactly at the end of the event (use the notch for a guide) Drag that point downward. You will see the notch move to the right. When the notch disappears you are done.

If you want it to play in the orig 7 seconds but still slow the last bit down, I agree with Kelly. No free lunch.

Earl_J wrote on 7/14/2010, 10:47 AM

Bob,
here is a 90-second clip involving something similar to what I think you're looking for at the end...
All done in Vegas ...

You can slow down the clip gradually by creating more points on the velocity envelope (double-click where you want it) ... fairly simple ... then take a still shot of your last frame and place in on the timeline for the duration you require.

You cannot lengthen the slo-mo portion without cutting it somewhere else if you want the same length of video... in order to get the effect I want, I always create the clip with the effect and duration required, and then determine if the length is too long or not long enough...

Until that time... Earl J.

BobF wrote on 7/14/2010, 3:07 PM

So as I suspected, there's no free lunch. Fine. It is what it is and I deal with it. Fair enough. Earl, thanks, appreciate the link.

Earl_J wrote on 7/14/2010, 6:02 PM

Bob,
not a problem - just doing what I can from where I am with what I have...

Until that time ... Earl J.