The process of YouTube indexing your video to become searchable largely depends on the traffic that the platform is encountering at that very moment. Generally, the thumb rule says 8 hours from the time of uploading the video that it becomes searchable on audience feeds. If you decide to alter information such as title tags, description, thumbnail, the same indexing time will apply for any uploaded video. It also applies in case you wish to change the status of your video from private to public.