The "480p" part usually refers to standard-definition video resolution (640 x 480 pixels). The suffix "m4v" is a video container format developed by Apple, very similar to MP4. Potential Contexts
However, based on the components of the phrase, here are the most relevant interpretations:
Sometimes off-brand or counterfeit products use slightly altered brand names (like "Remaxhdsbs") to avoid trademark issues while appearing similar to established brands.
If you are looking for information on a specific device or file, double-checking the spelling or providing the context in which you found the text may help narrow it down.
