Slimvid

Preset · WebM to MP4 · stays on device

Convert WebM to MP4 Online

Turn browser recordings and VP8/VP9 WebM files into MP4 for iPhone, Premiere and chat apps.

Rilascia qui i video o clicca per sfogliare

Fino a 1GB ciascuno · MP4, MOV, WebM, MKV, AVI, WMV e oltre 30 altri

Scegli i file

Elaborato in locale nel tuo browser. Non viene caricato nulla.

Settings

Add a video and the settings for this tool appear here.

How it works

  1. 1Drop the .webm file from Chrome or your recorder.
  2. 2Leave MP4 selected.
  3. 3Convert and download a file iPhones and editors can open.

Processed locally in your browser. Nothing is uploaded.

Elaborato in locale nel tuo browser. I file non lasciano mai il tuo dispositivo. Fino a 1GB: per file più grandi c’è l’app desktop.

WebM plays in Chrome. Not everywhere else.

Chrome, Meet and a lot of screen recorders save WebM (VP8/VP9/AV1). iPhone, Final Cut and Discord still prefer MP4.

This is almost always a transcode. VP9 inside WebM cannot be remuxed into MP4. The hardware encoder writes H.264.

Audio is usually Opus in WebM; we map it to AAC in the MP4 so Apple devices play sound.

What you get

Input
WebM (VP8 / VP9 / AV1)
Output
H.264 + AAC MP4
Typical source
Browser recordings

Tre passaggi

How to convert WebM to MP4

Nessuna registrazione, nessuna coda di upload, nessuna filigrana. Tutto avviene sul tuo dispositivo.

  1. 1

    Rilascia il file

    Drop the .webm file from Chrome or your recorder.

  2. 2

    Scegli le impostazioni

    Leave MP4 selected.

  3. 3

    Scarica

    Convert and download a file iPhones and editors can open.

Same job, other limits

Related size and platform pages

Convert MP4 to WebM OnlineMake a web-native WebM from an MP4 for HTML5 pages, Chrome recordings and lightweight embeds.MP4 → WebMConvert MOV to MP4 OnlineTurn iPhone and camera MOV files into an MP4 that actually plays in browsers, Discord and slides.MOV → MP4Convert MKV to MP4 OnlineRemux a downloaded MKV into MP4 so phones, editors and chat apps will play it.MKV → MP4Convert AVI to MP4 OnlineTurn old camera and screen-recorder AVI files into an MP4 that phones and browsers can play.AVI → MP4

Continua

Strumenti correlati

FAQ

WebM to MP4 FAQ

App desktop

File oltre 1GB? Passa al desktop.

La versione browser è perfetta per le clip di tutti i giorni. Quando devi elaborare filmati enormi o decine di file, l’app desktop lo fa più velocemente sul tuo hardware.

Ottieni l’accesso anticipatoConfronta web e desktop
  • Nessun limite di dimensione: 4K, registrazioni di un’ora, qualsiasi cosa
  • Code batch: rilascia una cartella, applica un preset
  • Codifica con accelerazione hardware (H.264 / H.265)
  • Funziona completamente offline, stessa garanzia di privacy