You might get some graphics artifacts since you aren't supposed to be viewing the cutscenes with such a high field of view, but it's certainly better than seeing the cutscenes all zoomed in. Not sure if this was covered in the video, but you can fix the zoomed in cutscenes and black bars during cutscenes in 3, vice city, and san andreas with the widescreen fix mod by turning off widescreen/borders in the games options, then going into the scripts folder, editing the widescreen fix.ini, and changing the line 'RestoreCutsceneFOV' to 0.