Is a format established by Japanese companies in 2006. Designed for storage of video in resolution HD. The basis of lay encryption algorithm MPEG-2. Today, there are two HD-resolution videos: 1080p and 720p. This format is positioned as a direct alternative to obsolete DV in the home video recording sphere.
An SPX file is a Speex audio file saved within an Ogg Vorbis container. Speex is an open source patent-free audio format designed for speech compression. It supports variable bitrate (VBR) encoding and several features not found in other audio codecs. Some examples include embedded encoding, intensity stereo encoding, and voice activity detection.