Video speed changer (speed up/slow down)
For permanent links you can use: https://ezgif.com/video-speed?url=https://example.com/video.mp4
Online video speed changer
Free online tool for changing video playback speed.
Accelerate (speed up) or slow down any video file, make slow motion video.
You can choose to keep the audio track at the original pace, or change the speed together with video (or mute the audio altogether).