Components of the video names inform about: 
	(1) the ball diameter; it is described as d2, d3 or d4 what means, respectively, 2 mm, 3 mm or 4 mm, 
	(2) the vibration type (s - sinusoidal, ns - non-sinusoidal) and the power level of vibrations (here it is always 4, i.e. the highest level of the table vibrations),  
	(3) a video number, 
	(4) an especial identification number of the video (important only for the authors to identify properly the video within original records)
	(5) sometimes a short info about interesting  results of the experiment; 
	    "convective flow" characterises the type of a collective motion of the balls, 
	    "cooling" means the aplication of a cold gas to cool the cylinder with balls during experiment,  
	    "electrified" informs about the symptoms of electrification of the balls visible at the end of vibrations,
	    "HR" means horizontal rows of balls,
	    "inclined rows" describes the characteristic inclination of the rows of balls in respect to the horizontal plane, 
	    "stagnation" means no movement of the balls due to lack of free space inside cylinder below the top lid, 
	    "vertical rows" informs about the appearance of ordering of balls in the form of vertical rows.

For example, the video No. 30, named “d2_ns4-video30_id050.mp4”, shows the bed of balls of 2 mm diameter vibrated in the cylinder at 4-th power level by non-sinusoidal oscillations.