I looked at the original FMV files in Director's Cut and it looks like most of the video files are in a different resolution than the PC porting staff credits FMV. I took a look at the opening scene with James in the bathroom on VLC media player, and the codec information shows video file, as well as most of the other FMV files, are displayed in 640x384 at some odd aspect-ratio, and because the game was designed for 4:3 displays, the game tries to correct the empty space by letterboxing the videos. The porting staff credits FMV however is at 640x480 and doesn't have the letterboxing issue.
Topic on Talk:Silent Hill 2: Director's Cut
https://www.reddit.com/r/silenthill/comments/34ycvr/sh2_pc_cant_find_the_widescreen_fmv_pack/cr0bfdl
This, as always, may help.
And I'm still waiting for being able to upload files bigger than 2GB here.
Is that the widescreen pack or an updated 4:3 version of the FMVs? The issue I was referring was how the Widescreen Fix by ThirteenAG keeps the FMVs to 4:3 but the resolutions of most of the game's FMVs are letterboxed because of the 640x384 resolution instead of 640x480.
Oh, sorry.
In this case, why don't you just ask him? Either github or gtaforums.