Be able to hide data in video

A picture is simply too easy to spot unless the data added is tiny, because any image short of a RAW 10MP file is simply too tiny. Compare that to the average video where you can go from several hundred Mb all the way to 30Gb or more for Blu Ray. By allowing hiding in video, even if you only allow it in a few formats (I would suggest .avi and .mkv as both are container formats and should be easier to add data to) it would allow for the data to be hidden to be more substantial than a couple of bytes worth of text. To finish this out a single .exe that would only decrypt that you could send to someone you wish to access the file along with the password would be a nice feature to have.