I made this program to play Bad Apple on my CASIO CG50 calculator, note that the calculator is very slow at reading files, that's the reason for the lag and the low resolution.
Also, I was lent this calculator for a year, and since I had to return it in a month, the code was made in a hurry, so the compression algorithm is very simple, but not very efficient.
This is the example video.
To play the video, download the add-in (BadApple.g3a) and the video itself (video.bin), which is available in the releases tab and place both files on the root of the storage memory of the calculator. Note: it should also work on the fx-CG20 or even the fx-CG10 but I haven't tested it myself.
Before playing the video, you can select if you want to show the frame counter, and if you want the video to be played in real time (skipping frames if it lags), or play all frames regardless of the playback speed.
If you press the MENU key in the middle of the playback, or if the video ended, you'll have to exit the add-in by going to another one and entering back again to start playing the video again.
I used the PrizmSDK (0.5.1), you can just place the contents of this repository inside a project folder in the SDK and run the make.bat file.
You can just run the compress.py (in the compression folder) script with the first argument being the video. Requires OpenCV 2 and numpy. It will create a data.bin file.
Usage: compress.py [video]
Note: video must have a resolution lower than or equal to 384x216 px, as well as less than 60 fps.
Then, you need to run the compress program with the binary file that the python script created, to compile it just run make if you're on Windows with gcc and g++ in PATH. An executable for Windows is also provided in the releases tab.
Usage: compress.exe [video]
After that, the program will create a data.c.bin, which you can rename to video.bin and transfer to your calculator.
If the calculator says "Error reading video" when opening the add-in, make sure you place the binary file (video.bin) in the root of the storage memory of the calculator, and that it has that name.
If the calculator says "Invalid video", the resolution is higher that the screen of the calculator, the fps are above 60, or the scale at which the video is going to be played is higher than 99.