ITHMB is legacy and read-only here
ITHMB is an older raster format. It can usually be opened and converted from, but it's long obsolete, so there's no modern encoder to create new ITHMB files.
Looking to convert MP4 to ITHMB? Here's the honest answer — and what works instead.
Turn your file into a share-worthy AI Effect — one tap, no prompts.
MP4 is the universal video container that plays on virtually every device and platform.
MP4 plays in any browser and media player.
Not here — ITHMB is a legacy format with no modern encoder. We can often read ITHMB as a source, but for output use a current format like WEBM, MOV or GIF.
MP4 converts to WEBM, MOV or GIF — free, no sign-up, no watermark.