I set my output to the same Blender file as the scene. The entire render took place (10hr) but when I came back it was just a file symbol instead of an Mp4. There was no video.
I'm assuming that Blender just didn't know what to do but what happened to everything that it rendered? Could it be in some other location on my PC?
I didn't have anything in the sequencer but I did still have it ticked. I didn't know that was an option. But if the computer took that long to render where could it have ended up?