Convert mg4 to dds Online: mg42dds

You can use Tom's Editor to easily convert images from
MultiArtist 8x4 .MG4 to Direct Show Surface .DDS.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

MG4

MultiArtist 8x4 is an image format with extension MG4.

DDS

DDS are files invented by Microsoft to be used in games, mostly as textures. Images can be compressed to save space but the compression methods defined by DDS are all very fast in terms of coding and decoding.