 MPEG-2 video is not optimized for low bit-rates, especially less than 1 Mbit/s at standard definition resolutions.All standards-compliant MPEG-2 Video decoders are fully capable of playing back MPEG-1 Video streams conforming to the Constrained Parameters Bitstream syntax.MPEG-2/Video is formally known as ISO/IEC 13818-2 and as ITU-T Rec.