I want to have a text scroll through a video. I use Kdenlive for editing and rendering and it supports having a scrolling text and simply made it black text on a white background.
It scrolls very fast, way faster than would be readable. Which is intended. However, it should still look crisp (appearing clear, sharp, etc.).
When I stop at any point in the video, the text is as sharp as it could be. However, when playing the video, the text looks blurry.
It doesn't appear to be a player issue. I tried 3 different players, same thing. When I take a screenshot while playing the video, the text looks sharp, too.
I use a 60 fps LCD laptop monitor with 4 K resolution scaled to 1920 px x 1080 px by the operating system and tried 30 fps and 60 fps video.
The problem vanishes when I stand 4 m or more back.
Is this a known problem and is there a solution? Like using colors which aren't as different as black and white for the text and the background or actually lowering the frame rate or showing smaller/bigger text or anything?