QuikbenchQuikbench

Convert any video,
to any format.

Upload a video and convert it between MP4, MOV, MKV, AVI, and WEBM. Fast container repackaging, not a full re-encode. Processed securely and deleted immediately after conversion.

> input .......... mp4 / mov / mkv / avi / webm / wmv / mpg / and more
> output ......... mp4
> per file ........ up to 50MB
> storage ......... deleted after conversion

Video format converter

MP4 ↔ MOV ↔ MKV ↔ AVI ↔ WEBM

Converts between MP4, MOV, MKV, AVI, WEBM, WMV, MPG, MPEG, M4V, 3GP, and OGV. When your source codec fits the target container, conversion is a fast repackage with no quality loss; when it doesn't, this tool automatically falls back to a full re-encode (files over 20MB skip the re-encode fallback to keep things fast for everyone). Because this requires real video processing, it runs on our server rather than in your browser tab.

Drag a video file here, or click to browse
Accepts MP4, MOV, MKV, AVI, WEBM, WMV, MPG, MPEG, M4V, 3GP, OGV · up to 20 files, 300MB total, 50MB per file
Files are uploaded over an encrypted connection, processed, and deleted from the server immediately afterward. Nothing is kept or shared.

How this tool works

Video processing can't run in a browser tab the way simple audio conversion can, so this tool uses a secure server step: your file is uploaded over an encrypted connection, processed, sent back for download, and deleted immediately — it's never stored, logged, or used for anything else.

The Video Converter

Converts between MP4, MOV, MKV, AVI, and WEBM by repackaging the existing video/audio streams into a new container — fast, and no quality loss, when the codecs are container-compatible.

> how it works ... uploaded, processed, and deleted immediately
> what we keep ... nothing — files are removed right after processing
> supported ...... mp4 ↔ mov ↔ mkv ↔ avi ↔ webm

Single files or batches

Process one video at a time, or queue several files and run them all through in a single batch, with a zip download when you're done.

Why some conversions fail

This tool tries a fast, lossless repackage first, and only falls back to a full re-encode when your source codec genuinely isn't valid inside the target container (e.g. H.264/AAC converts cleanly between MP4/MOV/MKV without re-encoding; WEBM's VP9/Opus going into AVI needs one). The re-encode fallback is capped to files under 20MB, so a large file needing re-encode — or a genuinely corrupted file — is what triggers a clear error instead.

VIDEO MOV
Server-side processing

Frequently asked questions

MP4, MOV, MKV, AVI, WEBM, WMV, MPG, MPEG, M4V, 3GP, and OGV as input; MP4, MOV, MKV, AVI, and WEBM as output.

This tool first tries a fast repackage (no re-encoding, no quality loss), and automatically falls back to a full re-encode when your source codec isn't compatible with the target container. The re-encode fallback is only attempted for files under 20MB to keep processing time reasonable for everyone — a larger file needing re-encode, or a genuinely corrupted file, is what causes a failure.

Yes, completely free with no account required and no watermarks.

Yes — queue up to 20 files (300MB combined, 50MB per file) and send them all to the same target format in a single batch, then download everything as one zip file.

Each file can be up to 50MB. Batches are capped at 20 files and 300MB combined.

Yes, it works on any device with a modern browser, including phones and tablets.

📖 Related guide: Video Formats Explained: MP4, MOV, MKV, AVI, WEBM