Outside of lightsaber customization, "sblade4.mp4" functions as a standard digital container for video and audio data.
How to Convert M4s to MP4 (STEAM GAME RECORDING FILES) - YouTube. This content isn't available. YouTube·Downloadsource.net MP4 files explained: How to open and use - Adobe sblade4.mp4
These files are often managed via mobile applications like the Force Park V2 app, allowing users to upload and preview custom ignition, flicker, and clash effects. The Generic Nature of MP4 Files Outside of lightsaber customization, "sblade4