Internet Wave

• Extension: vmf (media, actually a WAV file), vmd (web reference)
• Codec ID: 0x7150
• Company (archived): VocalTec ( http://web.archive.org/web/19961225003614/www.vocaltec.com/iwave.htm )
• Samples: http://samples.mplayerhq.hu/A-codecs/vocaltec-internet-wave/
• MIME types:
  • vmf: application/vocaltec-media-file
  • vmd: application/vocaltec-media-desc

Internet Wave files originated with a company named VocalTec and dates back to the very early days of multimedia on the web. It is likely a vocoder since it was also used in a VocalTec product named Internet Phone.

There are 2 formats at work. The first and most visible is VMD which is actually a plaintext file which directs a browser plugin to download the VMF file via HTTP. A VMD takes the format similar to:

[VMD]
Base=http://www.sonic.net/~thorn/KROS/hotwave/piano.vmf
Ver=1.0
Mood=Music

[Info]
Title=PianoRoom
Source=MIDI SMPTE PC studio
Author=Thorn Filipelli
Description=A grand piano in a large room, heard on the wind.

A VMF file is simply a WAV file with a codec ID of 0x7150.

Screenshots

Screenshots provided for posterity:

Internet Wave player running under Windows 3.1:

Internet Phone application running under Windows 3.1: