Alternatively, if your request is for "dolls" as in toys or collectibles, MP4 is the standard file extension used for downloading and sharing high-definition stock footage.

: Platforms like Pixabay and Pexels provide direct MP4 download links for royalty-free doll-themed videos, ranging from toy displays to horror-themed clips.

If you are trying to find the direct MP4 URL of a video currently playing in a browser: Deprivation of Liberty Safeguards (DoLS) at a glance - SCIE