There used to be unofficial video editorials after the contests earlier, but nowadays no one is making them.
As we all know that the people associated with the preparation of the contest are paid for their work, then why not include the official video editorials in the contest preparation as well and pay the ones who do that. There are many great coders who have done that and if it will be paid then many more will come up and this will eventually help the community.
CodeChef is already doing this!!! To make it happen, please make this post reach to the ones who can bring a change or rather at least upvote it to make this reach the concerned people. Official video editorials are better than waiting for someone to make videos(which may or may not happen). MikeMirzayanov