Trim and Adjust Speed

[goddi]

Greetings,

Trying to figure the Trim function in this menu. As I play the video, I want to pause it to establish the beginning trim point. So the red triangle is at the point of the beginning trim position. How can I move the lower white triangle to where the red triangle is at? This has been the problem with the previous version. If I click on the white triangle to move it to the position of the red triangle, the red triangle will reposition back to the white triangle and I lose that set trim position. How do I get the white triangle to move to where I placed the red triangle?

And I have no idea how to use the other items, like Interpolate Frames, Speed Key Points and Speed. Is there a video on how to use them?

Gary

[Igor]

4 hours ago, goddi said:

Trying to figure the Trim function in this menu. As I play the video, I want to pause it to establish the beginning trim point. So the red triangle is at the point of the beginning trim position. How can I move the lower white triangle to where the red triangle is at? This has been the problem with the previous version. If I click on the white triangle to move it to the position of the red triangle, the red triangle will reposition back to the white triangle and I lose that set trim position. How do I get the white triangle to move to where I placed the red triangle?

Gary,

We plan to add special two buttons to set start and end points for trimming according triangle cursor. It will appear in Beta 3 or 4.

4 hours ago, goddi said:

And I have no idea how to use the other items, like Interpolate Frames, Speed Key Points and Speed. Is there a video on how to use them?

I'll publish a small tutorial soon.
We need to add some improvements for this window, and then I'll write the tutorial.

I recommend to try now a new "Interpolate frames" option. Use some video footage with fast motion scene (cars, train, waterfall). Set video speed between 5% and 20% and enable "Interpolate frames" option. Check the result.
Real my demonstation here: https://www.pteavstudio.com/forums/topic/52571-frame-interpolation-for-slow-motion-video/

[goddi]

Igor, Thanks. the two additional buttons for trimming will be very useful.

But I still don't understand how to use the Interpolate Frames and Speed Key points and Speed. I can get it to do something but have no idea what I'm doing. A tutorial would be helpful.😂

Gary

[Igor]

Gary, try the simplest thing:

1. Add a video with fast motion in a scene.

2. Set speed 5-10%

3. Tick the option "Interpolate frames". 

Then create another version with unticked "Interpolate frames" and compare results in a fullscreen preview.

 

 

[goddi]

Greetings Igor,

Is this to have an effect on the entire video clip, or can just a portion of the video clip be affected by the 'Interpolate frames'?

I'll wait for a tutorial...too many questions.🤔

Gary

 

[Igor]

On 1/17/2026 at 5:57 AM, goddi said:

Is this to have an effect on the entire video clip, or can just a portion of the video clip be affected by the 'Interpolate frames'?

Gary,

Frame interpolation is always applied to the entire video object, from start to end.

For example:

A. The original video is 30p. Your display operates at 60 Hz (or you are creating a 60p video export).
Video speed is original, 100%.
PTE will generate intermediate frames (1 real frame + 1 blended/interpolated frame) for the video object.

B. The original video is 60p. Your display operates at 60 Hz (or you are creating a 60p video export).
Video speed is set as 10% / 0.1x.
In this case, PTE will generate 9 intermediate frames (1 real frame + 9 blended/interpolated frames) for the video object.