Converting .mp4 videos to .m2v format.
Converting MPEG-4 Videos directly to MPEG-2 Videos (.mp4 to .m2v conversion) is possible and should be quite straightforward.
Use one of several video editing programs or (online) conversion tools, such as Adobe Premiere Pro or Freemake Video Converter, which allow users to import MP4 videos and export them in M2V format.