When continuously reading the content of SD card and printing it on the screen, as time goes by, the refresh rate decreases

[jpearman]

@Chen8331

We extracted the video frame by frame as images and processed them,

Does this mean you have hundreds, perhaps thousands, of images on the SD Card ?

The issue is that opening the file will take longer if the firmware has to search through many directory entries. So yes, the apparent time to open an image may take longer.

@Chen8331

I don’t know what method can be used to solve this problem.

Have a small number of files on the SD Card. It’s better to have one large file that you access for data and keep that large file open. That’s how I did the video playback in this post.

Dankest Vex Memes?

Well, sort of this (although not really either a rick roll or a meme). I showed this to a few people at worlds, I was going to post back in April, but have been sort of busy. [EXP Rick Roll]