Video-Player-for-Numworks

This is a simple video player app for the Numworks calculator.

Rickroll	Matrix

📕 Install the app

To install this app, you'll need to:

1. Download the VideoPlayer.nwa file, which you can download from the Releases.
2. Download a compatible video file in mjpeg format. You can take them from the samples folder. Or convert your own videos using tools like ffmpeg with the instructions below.
3. Connect your NumWorks calculator to your computer using a USB cable.
4. Head to my.numworks.com/apps to send the nwa file on your calculator along the mjpeg video.

🎞️ Converting videos to mjpeg format

Keep the resolution at 320×240. Adjust -q:v, fps= and -t for quality, fps and time.

With cropping:

ffmpeg -i input.mp4 -vf "scale=320:240:force_original_aspect_ratio=increase,crop=320:240,setsar=1:1,fps=15" -t 00:00:30 -vcodec mjpeg -q:v 24 -an output.mjpeg

Without cropping:

ffmpeg -i input.mp4 -vf "scale=320:240:force_original_aspect_ratio=increase,setsar=1:1,fps=15" -t 00:00:30 -vcodec mjpeg -q:v 24 -an output.mjpeg

📕 How to use the app

Key	Action
Back	Quit app
Shift	Change FPS
EXE	Debug mode

It runs around ~35 fps on n0120, and around ~15 fps on n0110 and n0115

🛠️ Build the app

I made tutorials here :

• C-App-Guide-for-Numworks
• Numworks-App-Development-Template