How to convert GIF to MP4
1. Drop one GIF. Other files are refused. 2. Press “Convert to MP4”. 3. Download the video and play it once before you send it.
The first visit also loads FFmpeg. Later visits reuse the browser cache. A short GIF usually finishes in a few seconds after that.
Why MP4 instead of GIF
An MP4 of the same animation is often much smaller, and many forms accept video but not GIF. GustKit encodes H.264 with even width and height so common players can open it. There is no audio track, because a GIF does not have one.
The other direction
To make a GIF from a video, use Video to GIF. To cut a video first, use Trim video. This page only accepts a file that is already a GIF.
How to check the MP4 before you post it
1. Play the download from the start and from near the end. 2. If the GIF was huge, expect the MP4 to be smaller, not identical in every pixel. 3. Send the MP4 when the form asked for a video.
A one-frame GIF still becomes an MP4. It will look like a still picture that is a video file. There is no soundtrack to keep.