David Blue extratone

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

Cessna 172 Documentation

Downloaded from cessna.com via web.archive.org.

Cessna 172R (20130523)

FIA WEC Timing Screen Tweaks

This is my data maximization CSS for the Stylish Chrome extension. I'm using it to Airplay two browsers side-by-side to a 39" TV (see comment below), so your application may need some tweaks.

To use, install the extension then visit live.fiawec.com. Click the Stylish icon, and choose "Write style for live.fiawec.com/this_URL". Then paste in the your preferred version of the css in the edit window (see photos of the two versions in the comments below), press save, and the page will automaticaly refresh.

The biggest change can be made just with the font size. You'll want to adjust that based on your screen and viewing distance.

If things are too crowded, adjust the padding inside the #classement td. 5px looks better, but space is precious.

Use curl to get the JSON response for the latest release
Use grep to find the line containing file URL
Use cut and tr to extract the URL
Use wget to download it

curl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \

% HELLO(1) Version 1.0 | Frivolous "Hello World" Documentation

NAME

hello — prints Hello, World!

	#!/bin/bash
	iatest=$(expr index "$-" i)

	#######################################################
	# SOURCED ALIAS'S AND SCRIPTS BY zachbrowne.me
	#######################################################

	# Source global definitions
	if [ -f /etc/bashrc ]; then
	. /etc/bashrc

	# coding: utf-8
	# Barcode scanner demo for Pythonista
	# Based on http://www.infragistics.com/community/blogs/torrey-betts/archive/2013/10/10/scanning-barcodes-with-ios-7-objective-c.aspx

	from objc_util import *
	from ctypes import c_void_p
	import ui
	import sound

	found_codes = set()

	# coding: utf-8

	# This script downloads and opens a Gist from a URL in the clipboard.
	# It's meant to be put in the editor's actions menu.
	#
	# It works with "raw" and "web" gist URLs, but not with gists that
	# contain multiple files or non-Python files.
	#
	# If a file already exists, a dialog is shown that asks whether the
	# new file should be renamed or replaced.

	from bs4 import BeautifulSoup
	import urllib2
	import appex
	import dialogs
	import clipboard

	channel = appex.get_url()
	webpage = urllib2.urlopen(channel)
	soup = parser(webpage)

	[Command]
	Automatic=true
	Command="
	copyq:
	// Select session to send data to.
	var sessions = [
	\"my_session_2\",
	\"my_session_3\",
	\"my_session_4\",
	]