Platforms like HappyScribe allow you to upload a Rumble file to generate Croatian subtitles via machine or human transcription.
If you are uploading to Rumble and want to reach a Croatian audience: How to add live captions to any website Rumble subtitles Croatian
If a video doesn't natively have Croatian subtitles, you can use these workarounds: : Platforms like HappyScribe allow you to upload a