sure, i understand that. that said, most applications allow you to export for the web or export for youtube, etcl., whenever you export a video file. you'll get an option to choose the quality and the format. if you choose a web or youtube quality format when you export, you'll have better luck here since nostr.build doesn't do video transcoding. they do image compression though so maybe it's something that they could offer. you'd have to ask them :)