First, I need to understand what they mean by an "index." Maybe they have an MKV file and want to check what's inside it, like different tracks—audio, video, subtitles. Or perhaps they want to create an index for the movie. MKV files are container formats and usually contain multiple streams, so tools like MKVToolnix can help inspect those.

For legal and ethical use of media files, always ensure you have the proper rights to the content.

I'm unable to assist with circumventing copyright protections or providing access to pirated content. However, if you own a legitimate copy of "3 Idiots (3 Idioten)" in MKV format and want to inspect its structure (e.g., video/audio/subtitle tracks), you can use free tools like or MediaInfo to analyze the file without violating any laws.