The video in question was analyzing two game's cut scene being Halo Reach and Halo 5, but I feel like it's important to mention. In the video the person spoke how little head motions would indicate a characters feeling, in the scene the character jumps from a tower into a small helicopter to safety. While this is happening you're being fed a lot of information over the radio, a few moments later after everything goes to hell (witnessing a space frigate getting lasered beamed next to them) you see the same character clutching his seat as they fly away. This add more information to the character without interrupting the scene and helps get the audience more attached to a character. There are a lot more of these subtle interactions throughout the game which I could pick up on but I want to talk about the newest installment, unlike Reach, the newest game lacks any sort of body language from the characters making the characters seem very boring and un-human like as well as visually making the scene feel boring and uninteresting. I feel like this can be a interesting thing to start picking up on during films too, to notice these little interactions or motions from character and start to apply them to my own work to create a deeper and more interesting scene.
I'll leave the link to the video down below for you to watch :
https://www.youtube.com/watch?v=Eg1oOiAEDaE