Files with rpl file extension can be often found as videos in special ARMovie video format for RISC OS 6 operating system.
RPL file extension - ARMovie video
What is rpl file? How to open rpl files?
File type specification:
The rpl file extension is probably best know for its use for ARMovie format, an ostensibly multimedia container format used on Acorn RISC computer systems.
Perhaps the most curious aspect of the format's design is its use of variable-length strings in the file header. Probably very rare outside Acorn RISC platform.
The default software associated to open rpl file:
Company or developer:
RISCOS Ltd.
RISC OS 6 is the latest, most up to date, version of RISCOS to be released by RISCOS Ltd. It is based on a completely 26 bit / 32 bit neutral source.
List of recommended software applications associated to the .rpl file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open rpl file, edit rpl file, convert rpl file, view rpl file, play rpl file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with rpl file - ARMovie video
Click on the software link for more information about RISC OS 6. RISC OS 6 uses rpl file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).