rr55 would project qt viewer or something like it be on standby "not posted anywhere" until the game is announced to shut down/after it goes offline? as i see your point about posting it now make things more complicated later down the road but there can be one posted somethine around the months before shut down or after game closes? since that would be better overall to have something like that for viewing animations and sound instead of merging video with sound more complicated route. similar to how the pako pako carnival game got a viewer , its something to remember the game by. a techincal question , is there or can a viewer be made for the games kildoya r and labyrinth bind and mermaid master? maybe there is one but it was posted in a not so easy to find place or one could be made ddespite those games having closed some time ago. perhaps you could communicate with the kamihime/tainamin viewers people and possibly have these games get viewers? could you find/post mega link to zip files containing files to updated tainamin battle arena and rpgx viewers? i recall hearing of viewers for those 2 tainamin games in the past but no recall from where , maybe there is 2021 updated viewers for both tainamin games around
@yuriAtelier If Project Qt should get discontinued/shut down/etc., I might create such a viewer (no promieses tho), but I think this won't happen in the foreseeable future anyway.
Regarding other games - I guess from a plainly technical standpoint anything is "possible"... some things may be easier, some may be harder. Animations can be a bit tricky, if they are made with commercial/non-free software, as this could mean searching for "free versions" of that software or finding other ways around that. Static images or pre-rendered videos are mostly simple.
I don't know any of the games you mentioned, nor do I know any viewer for them - so I think I can't quite help you with finding / creating one for games that I haven't ripped myself.