midi2Tiles

Demo

About

This tool create synthesia-like piano tiles effect from midi files.

Although Synthesia provides nice animation, it is not for free. Hence, I use matplotlib to create the piano tiles animation.

The output video can futher be imported in video editting software such as After Effects as an overlay of your video.

Install

pip install midi2Tiles

Usage

# some video settings
VIDEO_DPI = 1000
VIDEO_FPS = 60
VIDEO_WIDTH = 1080
VIDEO_HEIGHT = 720

# the proportion of keyboard display
KB_RATIO = 0.1

# speed of the falling tiles (pixels per sec)
# notice that this value also affect the height of each tile
TILE_VELOCITY = 500

from midi2Tiles import pianoTileCreator

ptc = pianoTileCreator.PianoTileCreator(video_width=VIDEO_WIDTH,
                                        video_height=VIDEO_HEIGHT,
                                        video_dpi=VIDEO_DPI,
                                        video_fps=VIDEO_FPS,
                                        KB_ratio=KB_RATIO,
                                        tile_velocity=TILE_VELOCITY,
                                        key_color="green",
                                        showKeyVelocity=True)
ptc.loadMidiFile("<input midi file>",verbose=True)
ptc.render("<output video file>",verbose=True)

Parameters

• video_width (int): the width of the output video (px)
• video_height (int): the height of the output video (px)
• video_dpi (int): the dpi of the output video (px)
• video_fps (int): the fps of the output video (px)
• KB_ratio (float): the proportion of the piano keyboard display. This value should be in [0,1)
• tile_velocity (int): the velocity of the falling tiles
• key_color (string): the color of the tiles
• showKeyVelocity (bool): if True, the velocity of midi notes will affect the opacity of the tiles

Author

Ian Shih Email: yjshih23@gmail.com

Acknoledgement

The ratio of the piano design is referenced from https://github.com/gin66/piano_keyboard