Changing the frame rate of a clip

You can change the number of frames displayed per second for a clip by specifying its frame rate. You may want to change the frame rate of a video file to decrease its frame size or make it match the rate of other clips in your project. Changing the frame rate does not change the speed of action, unless you use the Interpret Footage command, which changes both the frame rate and the speed of action. When you specify a frame rate lower than that at which the clip was shot or lower than the project frame rate, there aren't enough source clip frames to match the project frame rate, and movement may appear jerky. In this situation, Premiere makes up for the missing frames by repeating the last available source frame until the next new source frame is available. However, you can apply frame blending, which interpolates between available frames to create intermediate frames that can make motion seem smoother. Frame blending is also useful after changing clip speed, which also changes the frame rate.

The actual frame rate of a clip during playback or export depends on a complex relationship between the source clip frame rate, the project timebase, the frame rate you specified for playback or exporting, and any modifications you make using the procedures in this section. Changing the frame rate may cause some frames to be omitted, created, or repeated. If you want to change the frame rate for the entire Timeline, do not use any procedures in this section; instead, see Video settings and About exporting video from Premiere.

To change the frame rate of a source clip in order to change the speed of action:

1 Select a clip in a Project or Bin window, or in the Timeline.

2 Choose Clip > Advanced Options > Interpret Footage.

3 Select Assume This Frame Rate, type a value in frames per second, and click OK. Premiere redistributes all of the source clip's frames to create the new speed. If there are Timeline instances and duplicate clips based on the clip, their frame rates and durations also change.

To change the frame rate of a clip in the Timeline without changing the speed of action:

1 Select a clip in the Timeline, and choose Clip > Video Options > Frame Hold.

2 In the Clip Frame Rate section, select Alternate Rate and type a new frame rate.

3 Select Frame Blending if desired, and click OK.

Editing Video > Editing clips > Changing the frame rate of a clip