Is there a way to gradually increase/decrease speed?

[RCG]

I know how to change the playback speed of a video clip in my project, but is there a way to have it smoothly transition? For instance, can I have it go from 1x to 3x over a period of 2 seconds or must I jump directly from 1x to 3x (or manually break the files into dozens of super small chunks and manually increase each one... which will still not look smooth)?

[teknisyan]

I don't know what smooth or how smooth do you like the transition but you can try and adjust the setting on the Speed/Time-lapse that you can access via the video tab when you access the options of the video in the timeline.

[Kingston]

Try the "Strobe Motion" effect and keyframe the Remapped time value.