Bulk video converter — private, local and reliable

Convert multiple videos or extract audio in one queue. Mediabunny and WebCodecs process every file on this device, with no upload or watermark.

A local batch converter built for dependable exports

Choose one validated output profile, add multiple files and let MedleyKit process them sequentially. Each result is reread before download so missing tracks or invalid containers are not silently delivered.

Four stable output profiles

Create compatible H.264/AAC MP4, web-optimized VP9 or VP8 WebM, compact MP3 audio, or lossless PCM WAV without exposing invalid codec and container combinations.

Sequential batch processing

Only one media encoder runs at a time. A failed file keeps its own error and the queue continues with the next item instead of losing the complete batch.

Streamed local results

Large outputs are streamed to browser-managed local storage when available, then checked for readable duration, container, codec and expected audio/video tracks.

Local processing

Your source video and generated results are processed on this device instead of being uploaded to a remote media-processing server.

Focused tools

Each editing step has its own dedicated page, keeping the controls, choices and interactions simple.

Continuous workflow

Pass a local result directly to another compatible tool and combine multiple editing steps in the same browser on this device.

After processing, use Continue editing to pass the local result to another compatible tool. There is no download, upload or file selection between steps.