Why platforms prefer MP4 over GIF
GIF compresses each frame on its own with 1980s LZW compression, while H.264 predicts motion between frames. The same animation as MP4 is typically 5–10× smaller, loads faster and shows millions of colours instead of 256. That’s why X, Imgur and most messaging apps quietly convert uploaded GIFs into video.
Two things don’t carry over: transparency (MP4 has none, so transparent areas get the background colour you pick) and automatic looping (video players decide whether to loop). Use the “Play the GIF” multiplier to make short loops long enough for platforms with a minimum video length. Need a QuickTime file for Apple editing apps? Use GIF to MOV. Want to add a soundtrack? Try Add Music to GIF.
The reverse direction
To turn a video back into a GIF, use Video to GIF or MP4 to GIF. If you must keep a GIF but need it smaller, the GIF compressor reduces colours and frames instead.