I have an issue with a movie that is being reported as 720p even though it is 1080P

I know this has been up a few times and I keep seeing the same answer: It is because the resolution is calculated by the vertical pixel count of the file and not the horizontal pixel count.
Wouldn’t it make more sense to select it by width and not height?
I can already hear somebody asking why, since e.g: 1920x696 isn’t “True” 1080p 
And the answer is that 1920x696 IS true 1080p. The black bars will be added by the player and be displayed as 1920x1080. All movies in the 2,35 Aspect ratio (1920xSomething) will always be 1080p even though the actual vertical pixel count of the file is lower than 1080 pixels.
By using the horizontal resolution you get non consitent result as the one I get.
Furthermore it makes no sense to waste bandwidth encoding the black bars to make it “True” 1080p. The clear cut line between the black bars and the actual image will cost a lot of bandwidth, which matters if you are going for a reasonable file size contra quality.
Just my two cents 
Are there any way to change the tag manually?