Make motion smoother by adding frames. New frames are calculated between the existing ones, so a 24, 25 or 30 fps video can play at 60 fps, and a clip can be slowed down without the stutter of repeated frames. Animated GIFs work too.
Two ways to use it
- A higher frame rate: 30, 50 or 60 frames per second. The length stays the same and the sound is kept. Useful for footage that looks choppy, for matching clips to a 50 or 60 fps project, and for low-frame-rate GIFs.
- Smooth slow motion: 2, 4 or 8 times slower, at the video's own frame rate, with the missing frames calculated instead of repeated. The sound is left out.
Two methods
- Motion interpolation (the default) estimates how each part of the picture moves from one frame to the next and draws it at the positions in between. This gives the smoothest result. Fast movement, fine repeating patterns and objects crossing each other can show warping or smearing, because their motion can't be estimated exactly. Scene cuts are detected and not blended.
- Frame blending mixes neighbouring frames. It is much faster and never warps, but movement looks softer, with a slight ghosting.
Results
Videos are re-encoded at high quality: MP4, MOV, MKV and WebM keep their format, other formats become MP4. Upright phone videos stay upright. A GIF gives a GIF, with a colour palette made for the new frames, its loop setting and its transparency kept. GIF frames can't be shorter than 1/50 s, so a GIF reaches at most 50 fps.
Limits
Uploads can be up to 1 GB. Motion interpolation does a lot of work for every new frame, so pictures larger than 720p are made smaller to 720p first, and one job can produce about 1 minute of 720p at 60 fps (about 2 minutes of 480p). Frame blending allows about 20 times as much, up to 1080p. For longer videos, cut the part you need first with the video trimmer.