Monoprice Maker Select v2 stops extruding after about 200-300 mm
Looking at the tread pattern on the filament, I think it's getting stuck. Note that the teeth marks get closer together as you go up the fillament, and the last one is a big divot, that looks like the gear trying to grab at it, and being unable to move it.

Are you seeing any drops in nozzle temp? I had a cooling fan kick in and drop temps low enough to prevent extrusion before.

Edit

From the discussion in the notes, heat creep was identified as a possible culprit, and seems most likely.