Shaky zoom, how to fix it???

[marsilivs]

Hi guys

I've been using VSDC Video Editor and when working with text objects this zoom effect is just not going smooth. Instead it starts shaking in the middle of the zoom, and I am talking about the final result, after exportation is finished, doesn't matter the video format, or FPS rate, or bit rate, the goddam shaking is always there.
Any ideas on how to fix it? Uploaded a sample here.

Thanks

[poisondeathray]

How does it look in the editor preview ? Is it shaky there too ?

[marsilivs]

How does it look in the editor preview ? Is it shaky there too ?

Yeah, it's kinda shaky in the preview as well.

[poisondeathray]

How does it look in the editor preview ? Is it shaky there too ?

Yeah, it's kinda shaky in the preview as well.

Then it has nothing to do with export settings.

You would have to fix the animation first .

[marsilivs]

How does it look in the editor preview ? Is it shaky there too ?

Yeah, it's kinda shaky in the preview as well.

Then it has nothing to do with export settings.

You would have to fix the animation first .

Yeah, but I can't figure out how to fix it, I mean, I's just a linear zoom effect, from 100 to 50, as simple as that. What kind of settings should I change?

[poisondeathray]

Do you have some other effects or keyframes ? Maybe interpolation is not set to linear ?

Did you have a look at some video tutorials ? Maybe you're doing something differently ?

https://www.youtube.com/watch?v=WRP5dXd6OdQ
https://www.youtube.com/watch?v=USNR5ckU9Es

[jagabo]

I suspect what's happening is the videos are YV12 and the scaling, zooming, and overlay are done mod 2. Possible fixes: work in YV24 or RGB. Or upscale (4x?), overlay, downscale back to the original size.

[jagabo]

Here's an example. On the top the zoom is with single pixel accuracy, fairly smooth. On the bottom everything is mod 2, shakiness similar to the OP's.