Saturday, November 24, 2012

So you want to get a PhD in Mathematics part 4

How to change or reverse video speed in Adobe Premiere Pro

Many people out there would like to make a nice and neat video showing a person talking as fast as Fred(A famous internet Youtube sensation.) or do a time-lapse related to something undergoing a change in their daily life like the growth of ones beard, hair etc..
All of these are done in a lot of editing programs and in this tutorial, I will teach you how this is done in Adobe Premiere Pro CS4 (This applies to all versions of Adobe Premiere)

First things first , you have to import your clip and drag it to the timeline:




When you play your clip , you are going to see normal speed just like you recorded it.
Playing with the speed and changing it is very simple ,
first right click on the clip inserted in the timeline and click on Speed/Duration:




When you click on this button , a small window will appear :



The changes that will be done on this clip won't apply on any other clips in the timeline , just on this specific clip.

Changes you can do:


1) The change that most editing users are most interested in is the Speed,  the unit of the speed here is in % (percentages), so when we decrease the percentage ,we mean a fraction of the original speed ( in frames/sec.) and when we increase this percentage more than 100%,  we mean we are increasing it by a fraction where the numerator is bigger than the denominator. I would like to mention this extra information just in case your want every single bit of info., Simply, as the percentage increases , the speed will increase thus giving fast motion and as it decreases, the speed will decrease thus giving slow motion.

2) Another change is the duration which is the same as the speed because as the duration decreases, the speed increases but when the user chooses duration , he specifies how much he wants the time to be if he wanted a video with a restricted duration.

4) Reversing makes it go backwards from end to beginning. 

3) You can maintain the same pitch even though you increase speed because when you increase speed , pitch is automatically raised.

4) Then we have the Ripple Edit; Shifting trailing clips option and this is mostly done for animation. For instance ,  get a group of drawings where each one has a small difference from the other , drag them to the timeline and select them both and click on Speed/Duration , if you check "Ripple Edit; Shifting trailing clips" option, and choose a duration , then this will make both images having that specific duration together. For animation , type in a small duration.

This is all about Speed in Adobe Premiere Pro.
I hope this helped you .
If you need more information, ask me on my email: Karims27@hotmail.com