M2V to SPH Converter

M2V is a format containing only video data, audio is stored in other accompanied file. The extension is widely used in DVDs and video compression systems. Actually it is an MPEG-2 video stream. M2V is also used in digital TV where serves as a standard that defines the structure of transport streams and data transmission methods.

SPHERE (SPeech HEader Resources) is a file format defined by NIST (National Institute of Standards and Technology) and is used with speech audio. SoX can read these files when they contain μ-law and PCM data. It will ignore any header information that says the data is compressed using shorten compression and will treat the data as either μ-law or PCM. This will allow SoX and the command line shorten program to be run together using pipes to encompasses the data and then pass the result to SoX for processing.