Adding text to a title
The first consideration that you need to be clear on is that font and text are different terms; they are not interchangeable. Text includes all the characteristics, such as the size, the color, and the font. The font, which is just a typeface, is only one component of text.
There are clear conventions about the use of text in video, and this is because text in a video is different from printed text, even though we tend to treat them the same. Video is low-resolution compared to text printed on a page. This means that text in video, even 4K video, is pixelated. Also, text on a printed page is there for you to read for as long as you need to decipher it. You can decide how long you need to look at the printed page for your brain to understand the words.
Video is not only lower-resolution and slightly pixelated but also plays for a fixed time, which you have no control over unless you skip back to read it again or pause the screen. This means you have to decipher...