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Change speed of clip based on a curve? #46
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I am not sure that I understand exactly what you want, but you can change the timeline of a clip very freely with
To slow down a clip progressively a clip of N seconds you would write something like
Now if you have a profile of the speed over time, you could integrate this profile to get the profile of a timeline, which you can tranform into a function I don't know if there is a proper Bezier curve library in Python. That would certainly be a job for Scipy. |
That sounds like what I'm after. I'll give it a shot. |
Cool. Note that 'going back in time' (i.e. negative speed) is possible for the video but not fully tested with the audio (you might run into a bug). |
Hi Zulko, |
Try this, with apply_to=['audio'] in fl_time:
|
Thanks Zulko for your quick response. It worked like a charm. But, I have one more concern. On changing the playback rate of the video the voice of the person in it also changes. That is, if I double or halve the speed of video, the dialogues are clear, but the voice becomes annoyingly unpleasant. This doesn't happen if I play the original video in a video player with 2x or 0.5x speed. Is there any way to avoid that? |
hello, Imagine recording it at 50 fps or 100 fps per second while its playback is constant at 1/25, when the car is close then use those frames. Typical of after effects programs is a retime curve. Slow down a point of the video and then continue normal any help please |
Please note that you are commenting on old, closed issues meaning only very few people will see your comments. |
Does anyone have any ideas as to how to change the speed of a clip gradually over a bezier curve?
Is there any demand for this feature?
Am I the only one who wants this?
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