Play RF64 files in your browser
The WAV for recordings too long for WAV, from multitrack sessions to all-day field recordings. Play an RF64 right here. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your sound starts playing the moment it opens, its whole waveform across your screen.
- Its whole waveform • Press or drag to jump
- Back and ahead 10 seconds • Half, 1.5× or double speed
- Show tags • Title, artist, album and cover
- Export • Save as MP3 or WAV
About RF64
A WAV counts its size in 32 bits, so it stops at 4 GB. The EBU defined RF64 in 2007 to go past that, and BW64 followed for immersive sound. Recorders switch to RF64 on their own when a take grows that big.
An RF64 is a WAV with a 64-bit size in a ds64 chunk, and BW64 adds the layout of 3D sound. The sound inside is the same PCM.
Filepeek reads the file in slices, so a recording of many gigabytes plays without loading it whole, with its waveform and details, and Export saves an MP3 or a WAV.
RF64 and BW64
.rf64
Format
- MIME type
- audio/wav
- Made by
- The EBU
- Released
- 2007
Inside the file
- Audio
- PCM, 16 to 32 bit
- Size
- Past 4 GB
- Variant
- BW64, for 3D sound
- Built on
- WAV
Opens in every browser
Browsers download RF64 files. Filepeek plays them in Chrome, Edge, Firefox and Safari.
- YouChromePlays through Filepeek
- YouEdgePlays through Filepeek
- YouFirefoxPlays through Filepeek
- YouSafariPlays through Filepeek
Questions
Why won't my long recording open as a WAV?
Past 4 GB, recorders save it as RF64, which many players don't read. Drop it here and it plays.
Does it play with many channels?
Yes. Polyphonic recordings play mixed down for your speakers.
Can I make it smaller to send?
Yes. Choose Export, then Save as MP3.
Is my recording uploaded?
No. The recording opens inside your browser and never leaves your device.