AV transcoding • Local browser processing

Free Online AV Transcoder

Browser-based audio/video transcoder using MediaRecorder and the Web Audio API. Transcode video to WebM in real time or convert audio to WAV, with all processing done locally and no uploads.

Select a file

Output format

WebM (real-time) WAV (audio only)

Start transcoding

WebM export depends on browser support for MediaRecorder/captureStream. WAV export decodes and re-encodes and may take longer for large files.

How to Use

Click 'Choose file' to upload an audio or video file.
Check or listen to the media in the 'Preview' section.
Select 'Output format': WebM (real-time) for video, or WAV for audio only.
Click 'Start transcoding' and wait for the process to finish.
Click 'Download' to save the converted file.

Tips

WebM transcoding uses the browser's MediaRecorder API for fast, local processing.
WAV export is lossless and ideal for editing, but may take longer for large files.

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