[entropicdrifter]

Yeah, lower bandwidth requirements and most computers/all smartphones have dedicated video decoding hardware, especially for h264.

[prophesi]

Hinted at with lower bandwidth requirements, but the biggest win with video is their stellar compression. GIFs store every single color value, which is why they get so huge so quick.

[adrusi]

GIFs use run length encoding, which usually makes them quite good for pixelly art, but not when you apply a bunch of vfx.