hoyangtsai

# convert to h.264 mp4
ffmpeg -i $input -f mp4 -vcodec libx264 -preset fast -profile:v high -level:v 5 $output -hide_banner

3 remove audio track only
ffmpeg -i $input -vcodec copy -an $output

# shrink video resolution
ffmpeg -i input.mp4 -vf scale=480:320 output_320.mp4

# change the video resolution and aspect ratio 

hoyangtsai

# Adobe

127.0.0.1 activate.adobe.com
127.0.0.1 practivate.adobe.com
127.0.0.1 ereg.adobe.com
127.0.0.1 activate.wip3.adobe.com
127.0.0.1 wip3.adobe.com
127.0.0.1 3dns-3.adobe.com
127.0.0.1 3dns-2.adobe.com
127.0.0.1 adobe-dns.adobe.com

hoyangtsai

/**
 * Turns a number/string to 2 digits day of the month with leading zero.
 * @param {number|string} day to turn into day.
 * @return {string}
 */
function numberToDay(j) {
  return ('0' + j).slice(-2);
}

// Examples:

hoyangtsai

/* iPhone X and Xs Max */
@media only screen 
    and (min-device-width: 375px) 
    and (min-device-height: 812px) 
    and (-webkit-device-pixel-ratio: 3)
    and (orientation: portrait) { 
    /* styles */
}

/* iPhone XR */

hoyangtsai

curl -i https://git.io -F "url=<original_url>" [-F "code=<token>"]

: '
$ curl -i https://git.io -F "url=https://gist.github.com/hoyangtsai/a6f2cddb1de1a25c42e030ab8d9ee559"

HTTP/1.1 201 Created
Status: 201 Created
Content-Type: text/html;charset=utf-8
Location: https://git.io/JSbdz
...

hoyangtsai

const {task, src, dest ,watch, series, parallel} = require('gulp');
const rename = require('gulp-rename');
const postcss = require('gulp-postcss');
const prettify = require('gulp-jsbeautifier');
const connect = require('gulp-connect');

const postcssConfig = require('./postcss.config.js');
const cssOutput = './css';
const postcssWatchFiles = ['./pcss/**/[^_]*.pcss', '!node_modules/**'];

hoyangtsai

fullScreenClass() {
  const w = window.innerWidth
      || document.documentElement.clientWidth
      || document.body.clientWidth;

  const h = window.innerHeight
      || document.documentElement.clientHeight
      || document.body.clientHeight;

  const ratio = +(h / w);

hoyangtsai

const jsdoc2md = require('jsdoc-to-markdown')
const gulp = require('gulp')
const glob = require('glob')
const path = require('path')
const fs = require('fs-extra')

const docDir = './docs'

async function doJsdoc2md() {
    const fileSrc = 'src/**/*.js';

hoyangtsai

let charCode = String.prototype.charCodeAt.call(str, index)

// char code between 48 and 57 is the number 0 - 9
if ( charCode < 48 || charCode > 57) {
  ...
}

hoyangtsai

# create a directory for the project repo
mkdir [project_name] && cd [project_name]

# initialize git repo
git init

# enable git subtree checkout
git config core.sparsecheckout true

# enter a folder name which is checked out