The image I am looking at has a no evidence of this signature or any other signatures that are recognisable.
Go back and check Kessler's list of file signatures again. You'll find a number of signatures that start with those four bytes, including some image file formats.
Doesn't Irfanview tell you what it thinks the format is? Not even in the 'Save As …' dialog box?
Thanks for that, I have been looking into the image but I am struggling to get my head around it, as it is not something you come across regularly.
JPEG are pretty straightforward to spot, Header of 0xFF D8 FF E0 and Trailer of 0xFF D9. According to Gary Kessler the TGA file does not have a header but should have a trailer of
0x54 52 55 45 56 49 53 49 4F 4E 2D 58 46 49 4C 45 2E 00 (TRUEVISION-XFILE)The image I am looking at has a no evidence of this signature or any other signatures that are recognisable.
Thanks
Chris
I don't get it 😯 , the provided page specifies the format (actually the 4 types of it) for "plain" TGA, i.e. something that came out like in 1989 or before !
http//
The other given resource
http//
specifies how the presence of a footer means that it is a TGA version 2.0 format and there are on it the link to the actual official specifications for version 2.0 which contain
The last 3 areas, the Developer Area, the Extension Area and the TGA File Footer are new to the file specification as of September, 1989. For this reason, images created with software written before September, 1989 will probably not contain these three fields. In this document, the TGA File format prior to September, 1989 will be referred to as the Original TGA Format while the current TGA File format will be referred to as the New TGA Format.
I have rarely seen a file format (and it's header and/or footer) been described in such a detail, what is the actual problem you are struggling with?
jaclaz