In academic research, "1_5.mp4" often refers to supplemental video files attached to research articles:
: An article in the Journal of the American Chemical Society regarding Asymmetric CO Oxidation includes supplemental "PLIF ignition movies" with ratios like 1:5 saved as MP4 files. 1_5.mp4
If you're looking for technical information about the MP4 format itself: In academic research, "1_5
: Research published in Langmuir includes a series of MP4 files (e.g., la9b02124_si_005.mp4 ) as part of a Dynamic Analysis of Colloidal Crystals . Saving a Schedule Template - Support - CheddrSuite In academic research