How to compress audio or video
- Drop the file above.
- Choose how small (audio) or the size and quality (video).
- Compress and download.
How much smaller?
A one-hour WAV interview (about 600 MB) becomes about 28 MB at 64 kbps mono Opus and still sounds clear: ideal for sending to a transcriber or uploading. An MP3 at 192 kbps typically halves at 96 kbps. A 1080p phone video re-recorded at 720p is usually a third to a half of its size.
Why does video take as long as it plays?
Video is re-encoded by your browser's own recorder, which works in real time. It costs nothing and your video never leaves your computer. For long videos, run it while you do something else, or cut the part you need first with the cutter.
Questions
Is my file uploaded?
No. The compression runs in your browser on your computer.
Which settings for transcription?
Speech at 32 or 64 kbps mono is plenty for transcription and keeps uploads fast.
What format is the compressed video?
MP4 where your browser records MP4 (recent Chrome, Edge and Safari), otherwise WebM, which plays in browsers, VLC and YouTube.
Can I stop a long video halfway?
Yes: Stop saves what has been compressed so far.