WebM to MP4

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

Pilih fail video

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

Klik untuk memilih, atau lepaskan fail di sini

Cara 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 — soalan lazim

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.

Adakah anda memuat naik fail saya ke pelayan?+

Tidak — setiap alat di sini memproses fail anda sepenuhnya pada peranti anda, dan tiada apa dimuat naik ke pelayan. Satu-satunya pengecualian ialah alat AI, yang menghantar teks yang diekstrak (bukan fail) ke Claude untuk melakukan kerjanya.

Adakah terdapat had saiz fail?+

Kami tidak mengenakan had buatan, tetapi kerana pemprosesan berlaku dalam pelayar anda, fail yang sangat besar (500+ MB atau 1,000+ muka surat) dihadkan oleh memori peranti anda, bukan oleh kami.