To "put together" or merge a video file like with other clips, you can use several free and accessible tools depending on your platform. Quick Online Tools (No Installation)

: You can use the "Create New Project" feature in the Photos or Clipchamp apps to select your MP4 files and save them as a single video.

: A high-quality tool that allows you to stitch clips together and trim them directly in your browser.

: Highly recommended for beginners who want professional-looking transitions between clips.

: A dedicated video joiner that can combine multiple large files into one without losing quality. Merge MP4 Videos: Combine MP4 Files for Free Online - Adobe

Since a full movie like Blutzbrüdaz is likely a large file, desktop software is more reliable:

: Great if you want to add text overlays or music while combining your MP4 files. Desktop Software (Better for Large Movies)