Changing video speed ruins everything.

NOVAdash wrote on 4/1/2023, 7:25 PM

So, I've been using this (Vegas-styled) software for a long time but I'm finally starting to try to get into more advanced things that I never used, especially now that I have the Pro version of Vegas 19. Like masking! Hoping for a simple click this, hold shift, etc. type fix for this issue.

I have created a motion tracked bezier mask, effectively highlighting a car in motion with an oval as it decides to make a right turn from the middle lane.

Then I wanted to zoom into it, but I have learned that Pan and Crop is not the thing to use for this, but instead used Track Motion so that the mask track follows the video track appropriately.

Now I want to speed it up. I'm very familar with ctrl+drag but the problem is the mask tracking does not inherit the increased speed, nor do the keyframes in the Track Motion. Is there a way I can get all of these to play together nicely?

Thanks in advance!

Comments

Former user wrote on 4/1/2023, 7:44 PM

@NOVAdash Hi, just to throw my penny in, I wouldn't try to do those things together, I'd do the 'editing' first, that is the zoom & speed alterations, maybe/prob render that out & then do the tracking bit.

Musicvid wrote on 4/1/2023, 8:14 PM

Is there a way I can get all of these to play together nicely?

Yes! One thing at a time.

You do speeding up with Optical Flow Resampling. Stretch is obsolete.Then, do everything else one step at a time. Nothing could be easier, but you will confuse yourself if you try to stack filters.

 

NOVAdash wrote on 4/1/2023, 8:53 PM

:( I have to admit I'm not too enthused about that answer. If I'm understanding you right, this will result in several copies of the same clip... with different layers of effects applied. And if I have to change something on the base layer, I have to re-render (at minimum) the remaining layers. It is what it is, I suppose. I was hoping there was at least a way to "stretch" the keyframes and I could probably finagle the motion tracking to match as well as the track motion.

@Musicvid What do you mean by speeding up using Optical Flow Resampling, and that stretch is obsolete? As an aside, I enabled Optical Flow Resampling for S&G's and it made my rendering time increase 5x!

Musicvid wrote on 4/1/2023, 9:06 PM

:( I have to admit I'm not too enthused about that answer. If I'm understanding you right, this will result in several copies of the same clip... 

No. Check back when you have studied fundamental timeline navigation. In school, we call this a "Linear Sequential" workflow which is all a-b-c-d. From the bottom up hierarchy, they are Media, Track, Even, and Output Levels.

One thing at a time, then another thing, and then RENDER

A good place to start is the Vegas Help and online tutorials. There are many

https://www.vegascreativesoftware.info/us/forum/got-questions-consult-the-tutorials-first-please--120282/

NOVAdash wrote on 4/1/2023, 10:15 PM

Your bolded part is how I knew I was making some sort of mistake. Outside of that, I'm not sure how any of that is helpful for my situation. But, thank you.

GJeffrey wrote on 4/1/2023, 10:15 PM

You could use nested project. No render and flexible.

1. Do your tracking in the nested project

2. Do your zoom and speed change in the master project.

3POINT wrote on 4/2/2023, 12:41 AM

 

Now I want to speed it up. I'm very familar with ctrl+drag but the problem is the mask tracking does not inherit the increased speed, nor do the keyframes in the Track Motion. Is there a way I can get all of these to play together nicely?

Thanks in advance!

AFAIK, the keyframes of trackmotion will move with the event when autorippling is enabled.

Probably when you first start changing speed before applying trackmotion and masking it would make a difference. Otherwise I would also go for @GJeffrey's solution and speed up the nested project.

NOVAdash wrote on 4/2/2023, 6:38 AM

I know I'm not going to always remember to speed it up/down first before applying other effects. Or maybe I'll decide on a speed, apply a bunch of effects, then decide the speed doesn't work like I want it to.

Due to this, I looked into nested projects. It's a new concept for me, but I played around with it for a bit (that is, creating a small project just for the one piece of footage, then dragging it onto the timeline of the mega-project), and it seems to be the way to go.

Do you recommend against having two projects open in two instances of Vegas, when one is nested into another?

john_dennis wrote on 4/2/2023, 7:21 AM

@NOVAdash

"Do you recommend against having two projects open in two instances of Vegas, when one is nested into another?"

It doesn't matter much except for housekeeping. Remember that changes you make in a nested project won't show in the master project until you save the nested project.