Streams, audio only
OBS recording to MP3
OBS records to MKV by default, which many players and editors won't open. Pull the audio out as MP3 — handy for podcasts, voice-overs and stream highlights.
Drop files here
Your file is converted on this device — nothing is uploaded.
Where to find the file
OBS → Settings → Output → Recording Path (usually your Videos folder). Files are .mkv or .mp4.
Step by step
1. Find the recording
Use File → Show Recordings in OBS to open the folder.
2. Drop the MKV or MP4 in
The video track is discarded; only audio is encoded.
3. Download the MP3
Or pick WAV/FLAC for lossless editing.
Questions people ask
- My recording has several audio tracks.
- The first (main mix) track is used. For separate tracks, remux in OBS first.
- Is my OBS file uploaded anywhere?
- No. The conversion runs inside this browser tab with FFmpeg compiled to WebAssembly. The file is read from your device and never sent over the network, so private conversations stay private.
- Is there a size or daily limit?
- No server limit and no daily cap. The practical ceiling is your device memory; desktops handle multi-gigabyte files, phones are happiest with an hour or two at a time.
- Can I convert several files at once?
- Yes. Queue up to 60 files; each shows its own progress and you can download them one by one or as a single ZIP.