How to download the blob as a file via AJAX?

Hello. Please tell me how to load a blob image as a file via AJAX.
Rather interested in how to make a blob from the file itself.

Want to do it to download the video to the poster as well loaded.
Blob with video when you download get URL.createObjectURL(video_file). How do I then make it as a file and upload to the server ?

Please tell me. Already the brain boils from the literature.
June 3rd 19 at 20:22
1 answer
June 3rd 19 at 20:24
read, but not really understand .. like magic - celestine.Hoppe commented on June 3rd 19 at 20:27
what? Creates a form object is added to the object file and sends Ajax. Everything on the server is caught in $_FILES - lily.Kozey commented on June 3rd 19 at 20:30

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