What is the automatic key frames feature?
The Automatic Key Frames option detects the differences between frames. When the difference reaches the specified threshold, Sorenson Video inserts a new keyframe. The Automatic Keyframes slider lets you specify how different a frame must be from the previous frame before Sorenson Video inserts a key frame. The ideal is to find a setting that inserts a keyframe at the beginning of each scene, without inserting unnecessary keyframes inside individual scenes. The only exception is fast motion scenes which often require additional keyframes. Lower slider values produce fewer keyframes (requires greater difference between frames) and higher slider values produce more keyframes (requires less difference between frames). The default value of 50 is good for most applications. We recommend staying within the 35-65 range for best results. Depending on your content, you may need to compress several times to find the optimum setting.
