Here is the second CG episode created for Halo 4's Spartan Ops.
Halo on Xbox One - CG Trailer
A beautiful CG trailer is out for the next Halo game from 343 Industries.
Making Halo 4 - Part 1 and 2
Join 343 Industries on a 20 minute behind the scenes featurette on the creation of Halo 4.
Halo 4 Trailer VFX Breakdowns by Method Studios
Method Studios do VFX breakdowns of several scenes from their recent cinematic trailer for Halo 4.