ohailstorm

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.

ohailstorm

i=1
for avi in *.mp4; do
    name=`echo $avi | cut -f1 -d'.'`
    jpg_ext='.jpg'
    echo "$i": extracting the first frame of the video "$avi" into "$name$jpg_ext"
    ffmpeg -loglevel panic -i $avi -vframes 1 -f image2 "$name$jpg_ext"
    i=$((i+1))
 done

ohailstorm

document.querySelector('#player-audio').playbackRate = 1.2;

ohailstorm

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

ohailstorm

//Make sure you scroll down to get all data loaded
var text = ''; 

$('.col-email').each(function(index,el) { 
if (index == 0) {
	text = 'Email, First Name, Last Name, iOS, tvOS\n';
}
else {
	//Email
	text = text + $.trim($(el).find("a").text()) + ',';