M2TS is a video file format commonly used for high-definition video recording. It is part of the Blu-ray Disc and AVCHD formats, offering excellent video quality with relatively small file sizes. M2TS files are often used in digital camcorders and for high-definition video streaming.
MP3 is an audio format that can compress and encode an audio file. It uses the lossy compression algorithm to contain audio data. The lossy compression helps to reduce the data significantly without losing audio quality. MP3s are created using different bit rates maintaining the original quality.