Free MKV to SPX Converter
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MKV
Matroska Video
Matroska Video is a container format, based on the Extensible Binary Meta Language (EBML), which is a binary derivative of XML. It is used for storing audio, video, and subtitles.
Main usage
Matroska Video is commonly used for storing high-definition video content, such as movies and TV shows.
- High compression ratio
- Support for multiple audio and subtitle tracks
- Support for multiple video tracks
Main features
SPX
Ogg Speex
Ogg Speex is an audio compression format designed for speech and is based on the open source Speex codec.
Main usage
Ogg Speex is mainly used for voice over IP (VoIP) applications, such as Skype, and for audio streaming applications, such as online radio.
- Low bitrate
- High quality speech compression
- Supports variable bitrate