MP4 runs seamlessly across virtually all browsers, smartphones, and operating systems.
Use robust players like VLC or Windows Media Player that support a wide range of codecs. Are you trying to open a specific file with this name, or MP4 files explained: How to open and use | Adobe Remp4_at_Spe_mp4
In professional video editing, "Re" often stands for "Rendered." This could signify a file that has been processed from a project file into a final viewable format. Alternatively, it may refer to a Remux , which is a high-quality copy of a video file without re-encoding, preserving the original quality. it may refer to a Remux