Total War Three Kingdoms ca_vp8 to ivf converter does not work wrong header

[CircleOfTao]

Hello lovely and amazing People of the RPFM-Team,

I am currently making a cutscene replacer mod for Total War Three Kingdoms

importing cutscenes into the game via importing a .ivf file and converting it to .camv works flawlessly. However when trying the exact opposite converting a camv/ca_vp8 file to .ivf, then extracting it and viewing it in a vp8 compatible media player, or converting it to .mp4 or any other widely supported video format, with tools such as FFMPEG is not possible.

I also tried to prove my thesis, by trying the exact same Operation, with a cutscene file from Total War Troy in order to not waste your time, by just doing it wrong. And with a cutscene file from Troy which is also camv/ca_vp8 the conversion to .ivf works flawlessly and the file can then be extracted and converted to .mp4, or any other widely supported video format.

Now i sadly do not know much about coding, i am a mere novice getting his hands dirty, when he needs to, too achieve his modding goals here and there. But with the help of AI i was able to figure out pretty precisely where the Problem lies:

Total War Three Kingdoms Screenshots:

The Total War Three Kingdoms cutscene files are encoded/encrypted, with the version number 1, which is also reflected in the first line, when opening a converted and extracted .ivf file from Total War Three Kingdoms in the hxd editor:

Total War Troy Screenshots:

The Total War Troy cutscene files are encoded/encrypted, with the version number 0, which is also reflected in the first line, when opening a converted and extracted .ivf file from Total War Troy in the hxd editor:

I hope this helps and my english wasn't too bad.

With kind regards

CircleOfDao