Vivo Software was a pioneer internet streaming media company which was acquired by RealNetworks in March 1998.

The Vivo platform was a well-known player when streaming media was in its infancy and was deployed mainly on erotic sites during the mid-1990s.

The Vivo format is based upon H.263 video and G.723 ADPCM audio (not the G.723.1 speech codec).

It uses inter-frame coding, but does not insert any key frames, except at the beginning of the clip, which effectively disables the possibility of seeking to specific locations in the stream.

One of the last released versions of VivoActive Player added a workaround for this handicap by quickly decoding all frames from the first one to the requested position.