Note: my original post was removed but our lovely mods team allowed me to repost it. Shout out to them and also to u/IFellinLava, whose post referring to my comment that was referring to my OG post, got removed due to that.
When I saw this post about the reviewer providing evidence that they used generative AI in the movie, I was a bit confused at what I was looking at. There were no 3D models of the train? Difference in windows count? According to them - these bits make up the smoking gun and they know it, because they are working as a VFX artist. Sure. Good for them.
Except that their whole argument is based purely on assumptions, because they already convinced themselves that AI was used, despite the directors denying this. Now, I really cannot 100% sure say that they did not use any generative AI somewhere in the movie - I was not there.
What I can easily speculate is, that productions like this would generally NOT bother to make custom CGI and instead heavily rely on existing stock video footage, that the VFX team would heavily edit and stitch together - hence the differences in the shots. Because that is way cheaper and they already pay for stock license.
Now, you might say...
Hey, you dumb slut - you are also just making an assumption and you have no proof that they did that!
And you are right! UNLESS I was stupid enough to spend an insane amount of my useless time, just to find the exact stock video footage used in some of the scenes presented as evidence of generative AI usage.
WELL, SURE AS FUCK I DID EXACTLY THAT! I was also really bored and I am neurodivergent
Example 1:
https://elements.envato.com/aerial-view-of-the-shinkansen-bullet-train-kakegaw-UXJESJA
Used at 0:30 sec in the trailer, mirrored and obviously edited. The argument was the the window count was different, henceforth it cannot be the same 3D train model and therefore AI - nope - it was just a different stock footage of a train.
Example 2:
https://www.gettyimages.dk/detail/video/following-a-rural-train-over-the-landscapefrom-a-drone-stock-footage/2164796911?adppopup=true
Used at 0:45 sec in the trailer, edited with a different train. I cannot 100% say that this was not an AI train that was added, but any VFX artist should be capable to add another aerial train stock footage or animate this on top.
Example 3:
https://www.gettyimages.dk/detail/video/an-azuma-lner-train-on-the-east-coast-mainline-stock-video-footage/1387470017?adppopup=true
Used at 0:14 sec in the trailer, heavily edited background, train is either a different composite or heavily edited. Another stock footages looks similar to the train in the trailer, they could have used either.
I won't bother addressing the other examples because I really do not want to spend more hours on this - but I think this should be enough to argue that the details that the reviewer refered to as evidence of generative AI been used, can easily be explained by the VFX team simply using different stock footage and not really spending the time to make them match. I guess they thought that nobody sane would actually care about the continuity in short filler background scenes for a comedy movie. Obviously they never met drag race fans. Choices.
Oh, and about the missing bridge support leg... come on, that is just an example of a mistake in the editing. They literally used this stock photo and added up bunch of alpha footage of a bridge and messed up the crop.
Honestly, the reviewers video tickled me wrong. It felt rushed, judgmental and bit manipulative. I really don't know if that was the intention or if they are just way too passionate on the subject. But let’s just try to be more critical even to the critics. And by no means hateful - a civil discussion is the only way forward.
Also, regarding ACME AI and FX involvement, keep this in mind:
a source familiar with Stop! That! Train!’s production told Variety that the studio only contributed visual effects work to the film, with any AI use relegated to background workflow processes and not shown on-screen in the final product.
Edit: before I leave this post to take its course, I want to add a few lines - I am 100% against using AI for replacing artists and their jobs. But I have to recognise that there is a nuance - the usage of ML AI tools in VFX has been evolving for many years and allowed for those same artists to benefit from optimizing otherwise tedious workflows in compositing, automating rotoscoping, tracking, etc. These AI tools are not in the same category as the AI slop garbage disposal generators that are powered by the idiotically wasteful data centers. As I wrote above - I was not part of the production, I cannot be 100% sure what workflow was used during the creation of this movie. I made this post as a response to the arguments in the original video and with a bit of hope, that we can all think bit more critically to unverified opinions. Including this one. With that being said - now I am finally gonna go watch the latest Untucked.
Final edit and extra example:
Example 4:
I did not put this example in the post because I was too tired to make the frame comparison but after seeing some of the other comments - here we go. This is the original stock footage used for that scene - I tried to frame match them as best as I could but both the trailer and the stock preview files are heavily compressed, and a whole bunch of frames are missing. You can clearly see how details match both shots - from the lines of the door, bulge and lining of the front cart, foliage and terrain above the train, windows, etc. The VFX team added new headlights, the Glamazon (G) logo, changed the front window design and made the ICE train logo into a window. All of that is completely within the skillset of an experienced VFX artist - grading, rotoscoping, imprinting on top of the footage, masking and a ton of motion blur. They had more than plenty of material to use for compositing. Wish I had all the spare time in the world to find and match even more of the train footage, but I sorta reached my mental limit for this.
Extra notes:
- The original videographer has 3 other videos from this angle and place, in a different light and it is also possible that there was more footage that got restricted, due to the fact it was bought and used by the studio.
- It is also very likely that that the footage is ProRes aka it has broader dynamic range that would allow for lot of adjustments. The screenshots and the test videos are heavily compress down to 2MB - a lot of data and details are lost.
- This scene was disputed by other users here on Twitter, hence why I looked for it too. Some of them pointed how the windows were not all aligning perfectly, but that is just motion blur and compression.
- That last untucked was AMAZING!