Greetings,
I made a plugin that extracts all the text from a rpg maker mv project and puts it in the translation.json file from SRD_Translation Engine to help you translate your game. This avoids you replaying the game to translate each message/command.
First, the plugin extracts all the text and then stores it in the Translations.json file to be edited later via any text editor.
It is not the best method because it can be messy and easy to make errors, so I recommend the use of a JSON Formatter to facilitate the work.
All instructions and notes are in the description of the plugin and if you still have any issue, feel free to reach out to me.
The plugin is free for commercial and non commercial use, of course.