Free MP4 to SPX Converter

Convert MP4 to SPX for free and online, easily convert your video file without needing to download any software or pay any fees

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Maximum file size 200 MB

MP4

MPEG-4 Part 14

MPEG-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images.

Main usage

MP4 is widely used for sharing video files over the internet, as well as for storing and playing digital video on personal computers and mobile devices.

Main features

High compression ratio
Supports multiple audio and video streams
Supports multiple data types
Supports streaming over the internet

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.

Main features

Low bitrate
High quality speech compression
Supports variable bitrate