Velocity sync

joe-m8126 wrote on 8/2/2019, 2:41 PM

 

I am trying to learn how to velocity sync. There is a point in my clip where I want the speed of the footage to be normal and play as if it were at the normal speed. However when I try to velocity sync it I put three points and the middle point is where I want the speed of the clip to be normal. However whenever I put the velocity at 300 the whole clip speeds up and the point which I wanted at normal speed moves position and doesn’t sync with the point in the must ic where I marked can someone please help and tell me how to avoid the whole clip shortening and the point where I want it to be normal speed stay where it syncs with the music

The marker in the image is where I want the part of the clip to line up with but wnen i speeds up the clip and the clip isn’t off sync

Comments

Former user wrote on 8/2/2019, 3:18 PM

You have to put in your velocity points and then slide your video to be in at the sync point. Whenever you change the speed of the video, it will change lengths and move any exisiting sync points. Best if you do the video on its own track first so you can slide without affecting events around it.

It might help to add a Marker to the footage in either preview or the media pool to indicate where you want normal speed. Then you can use this as a reference when placing on the timeline.

 

joe-m8126 wrote on 8/2/2019, 3:45 PM

You have to put in your velocity points and then slide your video to be in at the sync point. Whenever you change the speed of the video, it will change lengths and move any exisiting sync points. Best if you do the video on its own track first so you can slide without affecting events around it.

It might help to add a Marker to the footage in either preview or the media pool to indicate where you want normal speed. Then you can use this as a reference when placing on the timeline.

 

This has kind of helped but not really what I was trying to get at. Basically whenever I speed up the clip using velocity it will change the length and then repeat the video afterwards and not keep the original length of the clip is there a way to stop this and thanks for the response

rraud wrote on 8/2/2019, 3:55 PM

By the screenshot's appearance, the velocity envelope appears would have the picture gradually speed up from a reverse state (-100%) starting at the event's head, until the second (middle) point is reached, then gradually slow down and reverse . You likely need to add more points to maintain the desired speeds.

Normal velocity is 100% (typically a straight envelope line in center of the video event.. a straight line @ 0% would result in any motion being stopped (freeze frame) .. @ 300%, the envelope line would be at the top of event... picture sped up.

Former user wrote on 8/2/2019, 4:26 PM

You have to put in your velocity points and then slide your video to be in at the sync point. Whenever you change the speed of the video, it will change lengths and move any exisiting sync points. Best if you do the video on its own track first so you can slide without affecting events around it.

It might help to add a Marker to the footage in either preview or the media pool to indicate where you want normal speed. Then you can use this as a reference when placing on the timeline.

 

This has kind of helped but not really what I was trying to get at. Basically whenever I speed up the clip using velocity it will change the length and then repeat the video afterwards and not keep the original length of the clip is there a way to stop this and thanks for the response

No, it will always change the length as you change speed. It has to.

Former user wrote on 8/2/2019, 5:56 PM

@joe-m8126 Nice tutorial here ... https://vegas-magazine.com/velocity-envelope/

Former user wrote on 8/2/2019, 8:46 PM

1.Choose the part of the video you want to apply the speed envelope to.

2.Create a subclip.

3.Apply velocity envelope.

4.Adjust the start and end points of the speed envelope so that the video starts at normal speed and gradually becomes the desired speed, and after then the video gradually drops the desired speed until it returns to normal speed.