Let the first keyframe at 100 % speed and set the second to your desired target value, for example 50 % and that's it. In this case, you'll need to create two keyframes, one at the beginning and one at the end of the transition from fast to slow. You can set a keyframe by clicking on the square symbol in the effects panel next to the time remapping line. If you want the clip to gradually slow down over time, you'll have to use keyframes. You can change the speed of the entire clip by altering that value. There you will see that your clip has a standard speed of 100%. You will find that under the effect settings that every clip has by default.
The best way to create a slowmotion effect is to use "time remapping". Some settings can't be changed later on though. You can review and change the sequence settings under Sequence -> Sequence settings.
#Adobe after effects twixtor tutorial 720p
So if your camera records 720p 60 fps, stick to that. Generally, you should set sequences to match you source material. If you don't see it, select Window -> Metadata. It's usually one of the tabs in the upper left on the standard layout. You can see the framerate of a clip or sequence by navigating to the metadata panel. As you can see, the right side video is really better then the left one: it is more "smooth", don't you think?
On the right side video you can see the result after changing the fps from 60 to 30 and then applying Twixtor with a speed of 50%. On the left side video you can see the result applying the Twixtor effects, with a speed at 25%. UPDATE: I uploaded this video on YouTube in order to proove that there is a quite difference between applying Twixtor without changing the frame rate and with it. What do you think about it? It is only an illusion (so I don't get something in the process, and there isn't any real improvement), or is it a good solution? Then, I had an idea: why they use "change frame rate" and Twixtor SEPERATELY? Why not first change frame rate AND THEN apply the Twxitor effects? I had this idea because I tried to obtain an extreme slow motion using only Twixtor, but the result was really bad! However when I combined the two techniques the results were pretty good.But then I thought: how can I apply this technique "locally" on the clip? Or better gradually (so starting from 59.94 at a point of the clip and gradually decrease it until it reaches 29.97)? Is that possible in some way? I know that you can right click on the original clip->modify->interprete footage and change the frame rate, but that is for the WHOLE clips, not locally as I need! Here the most important question: I saw from the above tutorial that the a basic technique for slow motion is to change directly the frame rate of the clip from (for example) 59.94 to 29.97 (as in my case). I use 60fps at 720p in order to make "sufficiently good" slow motion, but then I don't know what is the right "Sequence Presets" to choose (I usually use HDV 1080p30, but I don't know if it's the best/right choice) when I create a new sequence, so when I use a GoPro clip in some sequence it appears the message "Clips Mismatch Warning" and I have to choose the "Change sequence settings" option, but then I don't know what are the NEW sequence settings! I want to know what the NEW sequence settings are? Usually, I use my GoPro in order to make videos. How can I see the framerate of the clip or sequence in Premiere? In After Effects it is sufficient to click on it and on the top left corner (near to the preview image) the info that you need is displayed (included the framerate).I learned the technique about "changing the frame rate of your video in order to make a good basic slowmotion." This tutorial was made using After Effects and I have some related questions:
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