I don't know about programming, so my recommendations may be totally wrong.

Cinelerra is very good, but it lacks a well-functioning time-shift wizard. Today this effect is widely used.

ReframeRT could be a starting point, but it is not the typical effect that a technician looks for. I really like the Premieres assistant and also the Sony Vegas assistant, which are the editors I know best.

Thank you very much for commenting on your experience Igor.

El jue., 27 ago. 2020 a las 9:46, Igor BEGHETTO via Cin (<cin@lists.cinelerra-gg.org>) escribió:
RafaMar wrote:
...but I think it would be easier with an effect that instead of acting on the track acts on a single clip. A clip that we can define with cuts if we only want to change the speed to a fragment of it.
Yes, I also thought the same thing. If were possible tecnically, it would be better and easier from point of view of an user.
Another NLE, Lightworks_14, had done a good solution for me. Each track has a Speed text field that shows the speed of the clip where the cursor is on. When you change the speed of a clip, that clip will have that speed; you can not to do Speed ramp, for example.

In these days I am working on a Project that needs Speed fetures. To do that I use both ReframeRT and F_tmix plugins to create a fake SlowMotion (with Optical Flow) and then, with the Nest feature, I put the ClipSpeed in the Timeline. For some clips I have to use ffmpeg by command line and using "minterpolate" option to made OpticalFlow. Maybe there is Optical Flow in Cinelerra-gg but I do not know where. If anyone knows, He/She is welcome, please.
I use Nest to avoid sync problem with the other edits on the Timeline when I use ReframeRT for the speed.
I hope GG can make the Speed tool work well.
(Ooops, I wrote here but this it Forum stuff. Sorry)

IgorBeg

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