magnets110

Culture

What do you like best about working there?
What do you like least?
How would you describe this company's culture? engineering culture?
What causes the most conflict among employees here?
What would you change if you could?
How has the company changed in the past five years? How do you think it will change in the next five?
How long has the longest serving team member been there?
What's the average or median tenure?

Enabling Optimus support for your desktop GPU

Windows 10 users: you won't need this guide. NVidia has made signed drivers available with the modifications outlined here, although it's been said you'll have to get them from third-party vendors - distributing them like they do with notebook GPU drivers. I use drivers bundled with the Razer Core enclosure.

How to:

Fix pseudo-streaming videos by moving Moov Atom

Relies on some *nix CLI utilities: mediainfo; and qt-faststart (part of ffmpeg). I used homebrew to install them on OS X.

What is pseudo-streaming?

Pseudo streaming is simply a video that can start playing before it's fully dowmloaded. The videos are not streaming but rather progressively downloaded. What's important is that the file metadata (the Moov Atom) is at the start of the file rather than at the end. Usually this is an option set when encoding the file (called quick start or web start). If the files have not been encoded this way you can either re-encode or use a utility to move the Moov Atom. Re-encoding takes much longer than using a utility to move the Moov Atom so here's how to do it.

Steps

First check with mediainfo to see if video 'is streamable':

	#With the help of this script you can download parts from the Youtube Video that is live streamed, from start of the stream till the end

	import urllib.request
	import os

	#E.G: "https://r4---sn-gqn-p5ns.googlevideo.com/videoplayback?expire=1603041842& ..... 2.20201016.02.00&sq="
	#The sound link should contain: &mime=audio in it.
	#Here's an example from NASA LIVE:
	#VIDEO: https://r5---sn-gqn-p5ns.googlevideo.com/videoplayback?expire=1603165657&ei=eQmOX8TeFtS07gO1xLWwDA&ip=79.115.11.159&id=DDU-rZs-Ic4.1&itag=137&aitags=133%2C134%2C135%2C136%2C137%2C160&source=yt_live_broadcast&requiressl=yes&mh=PU&mm=44%2C29&mn=sn-gqn-p5ns%2Csn-c0q7lnsl&ms=lva%2Crdu&mv=m&mvi=5&pl=20&initcwndbps=1350000&vprv=1&live=1&hang=1&noclen=1&mime=video%2Fmp4&gir=yes&mt=1603143920&fvip=5&keepalive=yes&fexp=23915654&c=WEB&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2Crequiressl%2Cvprv%2Clive%2Chang%2Cnoclen%2Cmime%2Cgir&sig=AOq0QJ8wRQIgQMnxy1Yk3HLTpqbOGmjZYH1CXCTNx6u6PgngAVGi4EQCIQDWyaye-u_KGyVQ0HRUsyKVaAzyXbmzDqOGVGpIyP7VtA%3D%3D&lspa

	#!/usr/bin/env python

	import math
	import sys
	from moviepy.editor import AudioClip, VideoFileClip, concatenate_videoclips



	# Get average RGB of part of a frame. Frame is H * W * 3 (rgb)
	# Assumes x1 < x2, y1 < y2

	#!/bin/bash

	if [ -z "$1" ]; then
	echo "waiting for the following arguments: username + max-page-number"
	exit 1
	else
	name=$1
	fi

	if [ -z "$2" ]; then

	#EXTM3U
	#EXTINF:-1 tvg-id="BBC One HD" tvg-name="BBC One HD" tvg-logo="https://s4.postimg.org/k5xl5dmf1/bbc_one.png" group-title="BBC",BBC One HD
	http://a.files.bbci.co.uk/media/live/manifesto/audio_video/simulcast/hls/uk/abr_hdtv/ak/bbc_one_hd.m3u8
	#EXTINF:-1 tvg-id="BBC One London" tvg-name="BBC One London" tvg-logo="https://s4.postimg.org/z61nj8qd9/Bbc_london_logo.jpg" group-title="BBC",BBC One London
	http://a.files.bbci.co.uk/media/live/manifesto/audio_video/simulcast/hls/uk/hls_tablet/ak/bbc_one_london.m3u8
	#EXTINF:-1 tvg-id="BBC One Northern Ireland HD" tvg-name="BBC One Northern Ireland HD" tvg-logo="https://s3.postimg.org/ltztuojqr/6y_QROLCn_400x400.png" group-title="BBC",BBC One Northern Ireland HD
	http://a.files.bbci.co.uk/media/live/manifesto/audio_video/simulcast/hls/uk/abr_hdtv/ak/bbc_one_northern_ireland_hd.m3u8
	#EXTINF:-1 tvg-id="BBC One Scotland HD" tvg-name="BBC One Scotland HD" tvg-logo="https://s3.postimg.org/ltztuojqr/6y_QROLCn_400x400.png" group-title="BBC",BBC One Scotland HD
	http://a.fi