Chad's videos have it correct.
More branching decreases the surface area of a molecule which decreases the London Dispersion Forces resulting in a lower boiling pt.
But more branching makes molecules pack better into crystals which raises the freezing point (same as melting pt.).
Take the comparison of pentane and neopentane (2,2-dimethylpropane) which both have the chemical formula C5H12.
pentane m.p.=-130 C b.p.=36C
neopentane m.p.=-16.6C b.p.=9.5C
Neopentane is more branched and has the higher melting pt, but lower boiling pt.