.PTC - pmandin/reevengi-tools GitHub Wiki
This file format is is nothing more than a raw, uncompressed pixmap in RGB format. It's been used at least by the PC version of Resident Evil.
Just a bunch of RGB triplets stored sequentially, the dimensions of the picture have to be known in advance in order for the decoding program to make proper sense of it.
In the only occurrence of this file under Resident Evil's data directory, Data/CAPCOM.PTC is a 224x816 pixmap containing a series of the CAPCOM company logo, stacked vertically in what seems to be an animated sequence.
This file is a raw pixmap, thus has no header.