WebM to MP4

Convert a WebM video to an H.264 MP4 that plays everywhere — in your browser.

Chagua faili la video

WebM (VP8/VP9) — converted to H.264 MP4 in your browser

Bofya kuchagua, au dondosha faili hapa

Jinsi ya WebM to MP4

1
Add your WebM
Drop in the .webm file — it's read in your browser.
2
Convert
Click Convert to MP4; the video is decoded and re-encoded as H.264/AAC with the WebCodecs API.
3
Download
Save the MP4 — it plays on iPhone, in Premiere, on social media, everywhere.

Related PDF tools

Compress VideonewShrink an MP4, MOV or WebM by re-encoding it at a lower bitrate — in your browser, nothing uploaded.MP4 to WebMnewConvert an MP4 to a smaller VP9 WebM for the web — in your browser.Video to GIFnewTurn a short video clip (MP4, MOV, WebM) into an animated GIF — in your browser.Trim VideonewCut a video down to just the part you want, in your browser.

WebM to MP4 — maswali yanayoulizwa mara kwa mara

Is my file uploaded?+

No. The WebM is decoded and re-encoded to MP4 entirely in your browser with the WebCodecs API.

Why convert WebM to MP4?+

WebM (VP8/VP9) doesn't play on iPhones, in most video editors, or on some social platforms. H.264 MP4 plays essentially everywhere.

Is quality lost?+

It's a re-encode, so there's a small generational loss. At the default quality it's hard to notice; the file size is usually similar or a little larger.

Which browsers work?+

Chrome, Edge and Safari 17+. The tool tells you if your browser can't encode H.264.

Je, mnapakia faili zangu kwenye seva?+

Hapana — kila zana hapa inachakata faili zako kikamilifu kwenye kifaa chako, na hakuna kinachopakiwa kwenye seva. Tofauti pekee ni zana za AI, ambazo hutuma maandishi yaliyotolewa (si faili) kwa Claude ili kufanya kazi yake.

Je, kuna kikomo cha ukubwa wa faili?+

Hatuweki kikomo cha bandia, lakini kwa kuwa uchakataji hufanyika kwenye kivinjari chako, faili kubwa sana (zaidi ya 500MB au kurasa 1,000+) hupunguzwa na kumbukumbu ya kifaa chako, si sisi.