How to double frame number keeping same duration?

[Pierre Jasmin]

You have to switch to Display Source and animate at scene cut the Mark Segments menu, between A,B and C so Twixtor knows there is a cut there.

Pierre

[Ulrich Utiger]

Ok, I saw this with the cuts, thanks. But I still dont know how to interpolate frames without changing the duration. If I insert kewframes and then change the frame number, the video is not interpolated. If I have 120 frames for instance and set a keyframe at zero at the begining and 120 at end and then change the frame number to 240, the video doubles its speed up the middle and from then on remains still on the last frame. So how can I use “frame number” instead of “speed” in “output control” for interpolation?

[Pierre Jasmin]

To increase the duration of a sequence, you should watch our tutorials

https://help.revisionfx.com/album/20/

[Pierre Jasmin]

If I was not clear
In Premiere, I think you need to drop the 15 FPS footage in a 30 FPS sequence, right click on clip and select speed and set to 200% speed, you will now have all the frames

Then you drop that into sequence 2 and apply Twixtor there with speed 50% to double the amount of frames

[Ulrich Utiger]

I know this method. The problem is that I want to apply Twixter separately to each scene in order to avoid blurring on the transition from one scene to another. You said that I need to insert cuts at each scene transition. The problem here is that I can only insert 3 cuts (A, B an C) while my footage has hundreds of scenes (already cut with Premiere). So the solution would be to apply Twixter separately to each scene and then only double the frame rate without changing the speed or duration:

Here in short what I want:
frame rate: doubling from 15 to 30 fps
duration: no change (same as source)
speed: 100% (same as source)

Is this possible with Twixter or should I look for another solution?

[Pierre Jasmin]

You are not limited to 3 cuts, we only look if the value is the same on the two frames we request.
You can animate A,B,C,A,B,C,…

If you have a movie edited at FPS with cuts in it, no need to split apart
Drop it in sequence 1 15 PFS, double speed with Premiere as I suggested
Drop that sequence in a new 30 FPS sequence (say NO when Premiere asked you if you want to conform), in Twixtor Source Display mode, mark cuts
Then type 50% in Twixtor Speed
Does that do what you want? 10 seconds will remain 10 seconds like this (and you will have 2 times more frames)

Pierre

[Ulrich Utiger]

No it doesn’t! It does not interpolate, it just insert the same frames. Are you a stuff member of Vision Effects or just a User?

[Pierre Jasmin]

Here’s a sample Project taking a 15 FPS movie and converting it to a 30 FPS movie in Premiere CS6 with Twixtor
https://www.revisioneffects.com/bugreports/prem/CS6PremProj.zip

You will see it’s a frame counter and in the main sequence as set here you will see a blend between two numbers every 2 resulting frames

Perhaps there is something I don’t understand (like perhaps you have effective 15 FPS inside a 30 FPS movie, then that would require to use Interpret Footage instead)

I do note that I needed to slide by a frame the nested sequence as there appears to be a bug with Premiere Speed – duplicates the first frame

Pierre
RE:Vision Effects

[Pierre Jasmin]

I added an example with 5 sequences cut together in intermediate sequence (nested sequence)
With Twixtor Scene Cut set on first frame of each cut
https://www.revisioneffects.com/bugreports/prem/CS6PremProj2.zip

I will file a bug with Premiere with regards to speed being offset by 1
(you will see in intermediate movie that it turns 0 to 99 to 0,0, to 98
In a case where it’s a long sequence (not made up like here) that means you will loose the last frame

[Ulrich Utiger]

I can’t open your files. I get the message from Premiere:

Ce projet contenait une séquence impossible à ouvrir. Aucun fichier de préconfiguration de prévisualisation de séquence ou codec n’est associé à ce type de séquence.