How to convert .mpg4 videos to .m2ts format.
Converting MPEG-4 Videos directly to Blu-ray BDAV Video Files (.mpg4 to .m2ts conversion) is certainly possible and quite straightforward.
Use one of several currently available video editing programs or converters, such as ConvertXtoDVD or Freemake Video Converter.
Alternatively, you can try some online conversion tools, which allow users to easily convert .mpg4 to .m2ts.
A program bundled with Adobe After Effects
A video conversion and burning software
One of the most popular and successful free video conversion softwares
A fully-featured video conversion program