savegame filetype mismatch between pc version and retropie version of n64 emulators

[jackyallstar]

Hey peeps!

I'm trying to finish my retropie build on a Rpi3B+ and have found an awesome clone script that syncs your files with several cloud services: https://github.com/Jandalf81/rclone_script/wiki/RCLONE_SCRIPT-install (Jandalf81, thank you for making this!) with a bit of editing i could include the RetroArch/system folder on the pi where the non lr cores store their savegames.

i also went to set up retroarch and emulationstation on my gaming PC and after setting up save files to be synced from and towards my dropbox account i encountered what seems like an incompatibility between the save files from my n64 emulators.

on my pc i simply use Mupen64Plus, which uses .srm files and i could switch to Mupen64Plus-next or the parralel core but these all share the .srm filetype. on the Rpi the only core running .srm files is the lr-mupen64plus core, but as it runs too slow on the Rpi3B+ i want to defect to mupen64plus-GLideN64-hires which does a ridiculously great job with my 2 favo n64 games Zelda Ocarina of Time and Super Mario 64. (i did overclock my gpu a little bit)

the only problem is that the rice and gliden64 cores use .sra files for the saves. i have found a converter called pj64tosrm for my pc which converts these .sra files to .srm files so i can load the save on PC, but then i have to convert them back using a sort of AfterEnd script file that i cant find on win version of emulationstation if it exists at all.

is there an easy way to fix my filetype issue? something down the lines of changing the save filetype in the emulator or configuring lr-mupen64plus on retropie build to work exactly like the GlideN64 highres version? or do i really have to do the file conversion trick on both machines during beforestart and afterends scripts, and how would i achieve this inside emulationstation on windows? and if it's only doable trough start and end scripts, do i need to work with the es_systems.cfg in the .emulationstation folder on the Command xmlNode inside this xml config file? (i forgot how retropie added the beforestart and afterends scripts)