Video Format Converter
Convert video between MP4 and WebM with resolution control.
About the Video Format Converter
Change a video's container and codec using the formats your browser can encode, with an optional height cap and bitrate setting to keep the output small.
Examples
MOV to MP4
iphone-clip.mov · 84 MBOutput
iphone-clip.mp4 · 1080p · 31 MBMP4 to WebM
promo.mp4 · 1080pOutput
promo.webm · VP9 · 720pKeyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
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Audio Merger & Joiner
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Join multiple audio files into one track with gaps or crossfades.
Audio Trimmer & Cutter
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Cut a section out of any audio file, add fades and export a WAV.
Frequently asked questions
Read more
- How to find and download an m3u8 (HLS) video link
Why streaming sites hide the real video URL, how to spot .m3u8, .mpd and .mp4 requests, and how to turn a playlist into a single MP4.
- Compress, trim and convert video in the browser with FFmpeg WASM
How ffmpeg.wasm makes real video editing possible client-side, which presets to use for smaller files, and where the limits are.
- How to trim, combine and export video in your browser
A practical browser video-editing workflow covering timeline cuts, clips, audio, resolution, frame rate and export quality without uploading footage.
Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser