This patch basically adds all required parameters to `play_rendered_anim()` operator, allowing scripters playing back any rendered sequence or movie (by taking the user preferences into account). Based on that work, I thought we can also provide a simple UI, which can be quite useful to review/playback the rendering without changing the current scene settings:
{F2428521}
//Personally, I never understood what the operator is doing and for that reason I always used an external player, I'm familiar with.// However, I discovered it recently and I think it's actually a pretty nice feature if the user interaction would be better, so in addition to the popup, I added some extra warnings and error messages as well, which should help users figuring out what's happening or what's might be wrong with the settings.
I'd appreciate any feedback.
Cheers,
Christian
//Note: Successfully tested with all players except Framecycler (seems there is no standalone version anymore).//