i found two solutions to the "invalid app-name error":
1) pull the rtsp vod file stream (relative to the camera), and then re-stream it via rtmps, securing the content. this way ffplay can succesfully connect.
2) put the .vod file inside the default media folder, no subdirectories. this way it works again, the "app-error" seems related to the path,
i’ll consider adding all the subfolder to the media paths, would this be a solution?
could you add the subfolder vod by default in the next release? it’s already working in rtsp, but it’s not in rtmp nor rtmps.