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GIF Sync

Reassembles the frames of a GIF to sync its animation to the beat of an audio file.

Uses the TempoCNN models provided by Essentia.

Demo 1

Credits: Dance Reaction GIF by DOMCAKE x Gypsy Girl by Toman.

Demo 2

Credits: Nodding Yes GIF x Epik High - 낙화 (落花) {The Falling Flower}.

Usage

Install Docker Compose and start the Docker daemon.

Build the container with Essentia, Tensorflow, and ffmpeg

docker compose build

Start the container and get a shell inside

docker compose up -d && docker compose exec app bash

Find an audio file that starts exactly on beat. Find a GIF and label the frames you want to align to the beat. Pass them to the sync.py script as in the example below.

python sync.py \
    --audio_filepath "demo/gypsy.m4a" \
    --gif_filepath "demo/alien.gif" \
    --beat_frames 0 9 17 28 36 45 54 63 72 81
Optional arguments
--tempo_multiplier TEMPO_MULTIPLIER
    A multiplier applied to the extracted tempo. Speeds up or slows down the animation. (default: 1.0)

--output_directory OUTPUT_DIRECTORY
    The directory to which the output will be saved. (default: .)

--bpm BPM
    The BPM of the audio. Will be estimated if not passed. (default: None)

--interpolation INTERPOLATION
    The method of interpolation to use. Options: [linear, cubic, quadratic] (default: linear)