powhu

// iPhone X
ffmpeg -i input.mov -qscale 0 -r 24 -y -vf scale=886:1920,setsar=1:1 output.mov
ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -i output.mov -y -vf scale=886:1920 -map 0:0 -map 1:0 -shortest -strict experimental -r 30 -y appstore.mp4

// iPhone 8 plus
ffmpeg -i input.mov -qscale 0 -r 24 -y -vf scale=1080:1920,setsar=1:1 output.mov
ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -i output.mov -y -vf scale=1080:1920 -map 0:0 -map 1:0 -shortest -strict experimental -r 30 -y appstore.mp4

powhu

import UIKit
import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true

class MyOperation: Operation {
    
    enum State {
        case ready, executing, finished
        var keyPath: String {

powhu

//
//  GIF2MP4.swift
//
//  Created by PowHu Yang on 2020/4/24.
//  Copyright © 2020 PowHu Yang. All rights reserved.
//

/* How to use
 let data = try! Data(contentsOf: Bundle.main.url(forResource: "gif", withExtension: "gif")!)
 let tempUrl = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("temp.mp4")

powhu

## Show build time
      defaults write com.apple.dt.Xcode ShowBuildOperationDuration YES
      
## Fuzzy complete
     defaults write com.apple.dt.Xcode IDECodeCompletionFuzzyMode 3
     defaults write com.apple.dt.Xcode IDEWorkaroundForRadar6288283 3

## multi-core CPU
     defaults write com.apple.dt.Xcode IDEBuildOperationMaxNumberOfConcurrentCompileTasks `sysctl -n hw.ncpu`
  

powhu

find ~/Library/Application\ Support/Developer/Shared/Xcode/Plug-ins -name Info.plist | xargs -IFILE defaults write FILE DVTPlugInCompatibilityUUIDs -array-add <-UUID->