Video Format Converter
Convert any video between the five most common containers — MP4, MOV, WebM, MKV, and AVI — entirely in your browser. Pick the output format and a High/Medium/Low quality preset (CRF 18/23/28); your file never touches a server.
How to use this tool
- 01
Upload your video
Any input format FFmpeg can decode — it stays in your browser.
- 02
Pick output format
Match your downstream use: MP4 for delivery, MOV for editing, MKV for archival, WebM for the open web, AVI for legacy.
- 03
Pick quality preset
High for archival, medium for delivery, low for fast and small (CRF 18/23/28).
- 04
Convert and download
Allow time for re-encoding — every frame is decoded and recompressed locally.
Why this matters
Different platforms and editors expect different containers — Final Cut wants MOV, the open web wants WebM, almost everything plays MP4 — and converting on someone else's server adds upload time, a queue, watermarks, and a privacy risk for unreleased footage.
This converts locally with sensible codec defaults per container and a single quality dial, so you don't have to memorize encoder flags. Note that changing format always re-encodes (a small quality loss); if you only need a lossless container swap with the same codecs, the Video Trimmer's stream-copy mode is the better tool.
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FAQ
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