javascript - gif animation that changes frame on download -


is there way, using html, javascript and/or css, change each gif animation frame on download?

for example, if download = 10kb, gif animation frame = 1

javascript cannot control gif animation @ all. there some libraries similar, in fact parse gif file , render subimages on <canvas>. better off using sprites display changeable image on page.

not sure mean "on download", though. javascript cannot interface downloads - between browser , server @ point, no relation page started download. fancy sockety thing communicate server , ask how download going, updating page.


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