Five common output formats
Export MP4, WebM, MOV, MKV, or AVI with compatible H.264, VP9, MPEG-4, AAC, Opus, or MP3 encoding.
Free online video format converter
Drop a file hereConvert common video formats to MP4, WebM, MOV, MKV, or AVI
MP4MOVWebMMKVAVIWMVFLVMPEGTS3GP
ffmpeg.wasm re-encodes the video locally in your browser. Nothing is uploaded.
orFiles are processed on your device and never uploadedConvert video online to five output formats
Convert MOV, MKV, AVI, WebM, MP4, and other common videos locally to MP4, WebM, MOV, MKV, or AVI. Adjust quality and maximum resolution, remove audio, and preview the result before downloading.
Quality and resolution controls
Choose high, balanced, or smaller-file quality and keep the original size or limit output to 1080p, 720p, or 480p.
Local video processing
ffmpeg.wasm decodes and re-encodes in the current browser. The source and converted video are not uploaded to a server.
Video format conversion FAQ
Do I need to upload my video to convert it?
No. Reading, decoding, encoding, and result creation happen locally in your browser, so the video content is not sent to a server.
Which output format should I choose?
Choose MP4 for general playback, WebM for the web, MOV for QuickTime and editing, MKV for desktop playback or archiving, and AVI for older software.
Will conversion reduce video quality?
Format conversion re-encodes the video, so some change is possible. High quality preserves more detail, balanced trades size and quality, and smaller file uses stronger compression.
Why do large videos take longer?
The browser decodes and encodes frames on your device. Longer videos and higher resolutions generally require more processing time and memory.
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