ahem

/* global createImageBitmap */

function loadImageWithImageTag(src) {
    return new Promise((resolve, reject) => {
        const img = new Image;
        img.crossOrigin = '';
        img.src = src;
        img.onload = () => { resolve(img); };
        img.onerror = () => { reject(img); };
    });

XueshiQiao

# 1.install gource using HomeBrew
$ brew install gource

# 2.install avconv
git clone git://git.libav.org/libav.git
cd libav 
# it will take 3-5 minutes to complie, be patient.
./configure --disable-yasm
make && make install