DigitByte Software for Windows, Mac, iPhone, iPad, iPod – free download
How To Convert MPEG4 M4V to RM RMVB
A very good video converting program, extremely helpful for converting or joining all of your variety and favourite movies
M4V – MPEG-4 video file format
you can get a solution with the software for converting M4V to RM RMVB format.
About M4V to RM RMVB Converter 
All Video to RM RMVB Converter – A very good video converting program, extremely helpful for converting or joining all of your variety and favourite movies. The interface is easy to use and good designed, making it suitable for beginners and even for advanced users with the advanced settings available.
Convert M4V to your hard disk in RM or RMVB format only needs few clicks, depending on your movie formats, if they are WMV, MPEG, AVI, ASF, MPEG4, etc, the program also can convert them. just download it free, and have a good trial!
Download M4V to RM RMVB Converter
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Note:
The above downloads are the downloaders from Regnow of Digital River Inc (Nasdaq: DRIV). When it is running, the firewall on your computer may popup the request for Internet access. They have been tested and are 100% CLEAN.