Instead of creating another FFmpeg wrapper, I built this using WebCodecs, which is up to 67x faster than FFmpeg WASM.
Run your videos through this before posting on Nostr. It cuts size by 50–90% with minimal quality loss, saves CDN bandwidth, and makes posts load instantly.
https://nostr-compress.vercel.app
iefan 🕊️
npub1cm…qlr6f
2026-05-05 03:39:25 UTC
Author Public Key
npub1cmmswlckn82se7f2jeftl6ll4szlc6zzh8hrjyyfm9vm3t2afr7svqlr6fPublished at
2026-05-05 03:39:25 UTCEvent JSON
{
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"pubkey": "c6f7077f1699d50cf92a9652bfebffac05fc6842b9ee391089d959b8ad5d48fd",
"created_at": 1777952365,
"kind": 1,
"tags": [
[
"imeta",
"url https://video.nostr.build/e22ea86184c0ed31cf28cac6a5e91f44f7658695bc38a322480e3c4de765a4b3.mp4",
"blurhash e33IL~j[9Waxxc%4juR#a{ayITay%4j[ImX2a|jKjuj@oua{Rjjuxv",
"dim 1080x1556"
],
[
"r",
"https://nostr-compress.vercel.app"
],
[
"r",
"https://video.nostr.build/e22ea86184c0ed31cf28cac6a5e91f44f7658695bc38a322480e3c4de765a4b3.mp4"
]
],
"content": "Instead of creating another FFmpeg wrapper, I built this using WebCodecs, which is up to 67x faster than FFmpeg WASM.\n\nRun your videos through this before posting on Nostr. It cuts size by 50–90% with minimal quality loss, saves CDN bandwidth, and makes posts load instantly.\n\nhttps://nostr-compress.vercel.app\n\nhttps://video.nostr.build/e22ea86184c0ed31cf28cac6a5e91f44f7658695bc38a322480e3c4de765a4b3.mp4",
"sig": "559a613f3827be7dcc91c2085f93c92e06f42629ae76c9d938e371d8389987abaa87db63c1c473457772d8cd20f7795257cb11b281ee3b0818e3be4363b53df3"
}