Skip to content
MixConvert Logo
MixConvertWASM
Local Video Codec Sandbox • H.264, VP9 & Hardware Acceleration

Free Video Converter Online

Convert between MP4, WebM, Apple QuickTime MOV, AVI, and MKV formats. Adjust resolutions and frame rates directly in your browser. 100% free, zero cloud uploads, and zero size restrictions.

100% Private Zero Upload Wait No Cloud Transfer

Popular Video Conversions

mov→mp4

Instant in-browser

webm→mp4

Instant in-browser

avi→mp4

Instant in-browser

mkv→mp4

Instant in-browser

mp4→webm

Instant in-browser

mp4→gif

Instant in-browser

All Video Conversions

Convert to MP4

WebM → MP4MOV → MP4AVI → MP4MKV → MP4GIF → MP4

Convert to WebM

MP4 → WebMMOV → WebMAVI → WebMMKV → WebMGIF → WebM

Convert to MOV

MP4 → MOVWebM → MOVAVI → MOVMKV → MOVGIF → MOV

Convert to AVI

MP4 → AVIWebM → AVIMOV → AVIMKV → AVIGIF → AVI

Convert to MKV

MP4 → MKVWebM → MKVMOV → MKVAVI → MKVGIF → MKV

Convert to GIF

MP4 → GIFWebM → GIFMOV → GIFAVI → GIFMKV → GIF

Local Browser Video Transcoding

High-definition video processing traditionally required desktop software suites or server rendering farms. Uploading a 200 MB iPhone MOV video to a website involves massive bandwidth consumption and exposure of personal video footage.

MixConvert executes FFmpeg compiled to WebAssembly with multi-threading and SharedArrayBuffer memory support. Demuxing, color space conversion, and codec packaging occur entirely on your CPU cores in real time, keeping your private video records secure.