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.

8-Bit Sampled Voice (8SVX) is an audio file format standard developed by Electronic Arts for the Commodore-Amiga computer series. It is a data subtype of the IFF file container format. It typically contains linear pulse-code modulation (LPCM) digital audio. The 8SVX subtype stores 8-bit audio data within chunks contained within an IFF file container. 8SVX subtypes can exist alone within IFF file containers (audio only), or can be multiplexed together with other IFF subtypes, such as video animation streams.