Playing with frames and adjusting them according to the time is best done with After Effects than any other platform. It is user friendly interface and allows a designer to make best use of his/her capabilities. In this tutorial, we will teach you how to speed up or down a composition as per your requirements. You can also do so by using an alternate method i.e time warp in After Effects.
In this tutorial, we will teach you how to speed up and speed down your composition in After Effect CS6.