CMK MainasuK

Converting mkv to mp4 with `ffmpeg`

Essentially just copy the existing video and audio stream as is into a new container, no funny business!

The easiest way to "convert" MKV to MP4, is to copy the existing video and audio streams and place them into a new container. This avoids any encoding task and hence no quality will be lost, it is also a fairly quick process and requires very little CPU power. The main factor is disk read/write speed.

With ffmpeg this can be achieved with -c copy. Older examples may use -vcodec copy -acodec copy which does the same thing.

These examples assume ffmpeg is in your PATH. If not just substitute with the full path to your ffmpeg binary.

Single file conversion example

App Store apps

OmniFocus 4
iA Writer
Slack
Hudlum

Direct apps

Transmit

Fix OSX battery draining on sleep due to wifi activity

Install SleepWatcher using Homebrew:

sudo chown -R $(whoami) /usr/local
brew update
brew install sleepwatcher

Start the SleepWatcher service:

	class EventEmitter

	/// Shared Instance.
	public static var sharedInstance = EventEmitter()

	// ReactNativeEventEmitter is instantiated by React Native with the bridge.
	private static var eventEmitter: ReactNativeEventEmitter!

	private init() {}

	//
	// PaginationNetworkLogic.swift
	//
	// Created by Daniel Tartaglia on 4/9/17.
	// Copyright © 2019 Daniel Tartaglia. MIT License
	//

	import RxSwift

	struct PaginationUISource {

	NSVisualEffectMaterial constants, and the undocumented materials they coorespond to in various modes:
	+----------------------+-------+----------+------+---------+
	\| MATERIAL # \| LIGHT \| LIGHT EM \| DARK \| DARK EM \|
	+----------------------+-------+----------+------+---------+
	\| \| \| \| \| \|
	\| 0 - Appearance Based \| 3 \| 3 \| 5 \| 5 \|
	\| \| \| \| \| \|
	\| 1 - Light \| 3 \| 3 \| 3 \| 3 \|
	\| \| \| \| \| \|
	\| 2 - Dark \| 4 \| 4 \| 4 \| 4 \|

	//
	// NSObject+Swizzle.h
	// CrashDemo
	//
	// Created by wanyakun on 16/7/5.
	// Copyright © 2016年 com.ucaiyuan. All rights reserved.
	//

	#import <Foundation/Foundation.h>

	Family name: Copperplate
	>Font name: Copperplate-Light
	>Font name: Copperplate
	>Font name: Copperplate-Bold
	Family name: Heiti SC
	Family name: Kohinoor Telugu
	>Font name: KohinoorTelugu-Regular
	>Font name: KohinoorTelugu-Medium
	>Font name: KohinoorTelugu-Light
	Family name: Thonburi

	//
	// SpinlockTestTests.swift
	// SpinlockTestTests
	//
	// Created by Peter Steinberger on 04/10/2016.
	// Copyright © 2016 PSPDFKit GmbH. All rights reserved.
	//

	import XCTest

	//
	// Activity.swift
	//
	// Created by Zachary Waldowski on 8/21/16.
	// Copyright © 2016 Zachary Waldowski. Licensed under MIT.
	//

	import os.activity

	private final class LegacyActivityContext {