It's possible there's an .OUT file header of some sort perhaps that prevents the PSX movie players from recognizing the .STR files.
Yeah, they have a non-standard header, so PSM Play can't detect the format when reading from an actual file instead of scanning the whole iso. I had to make a custom application just for handling that stupid format (used in Legend of Mana, too). >_> Here a picture of the tool:
Also, iirc, you guys mentioned the room TIM files, some of which seems corrupted of something. Yazoo's tools use an incorrect method of detection, so it dumps are .TIM or .RAW completely random. Some of them are just simple TIMs, other are clut-less TIMs, and the rest are compressed images. I made a tool for those, too, but it's totally incomplete and can only open the clut-less TIMs (no editor supports them correctly for some reason). Here an image of this tool:
If you need any addition info about the file formats, I can give you a hand, otherwise never mind.