The problem is that I can not extract all video files from ".iso" (probably something related to "parte2.pak") that is not present inside ".iso"
The image below compares the amount of video files originally extracted from PS VITA (left side), with the amount of video files extracted from translated ".iso" from PS2 (Right side):

When copying and pasting "part1.pak" into the same folder and renaming it to "part2.pak" I extract a larger amount of video files, but they become corrupted, as in the following image:

The tool I'm using for extraction is this: https://github.com/mogaika/god_of_war_tools/releases/download/build-001/god_of_war_tools.exe
Tool Source: https://github.com/mogaika/god_of_war_tools/
Rom ".iso" trying to be extracted: https://mega.nz/#!jloBRRZa!Qkk_m1GgOS4ROYvuFA_M9QaxlBut10h4ispZ9XPYY5w or https://drive.google.com/file/d/0B5znLAS1bW1aNXJJbGxsUzlDbjA/view