This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.
To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
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# Slightly tighter CORS config for nginx | |
# | |
# A modification of https://gist.github.com/1064640/ to include a white-list of URLs | |
# | |
# Despite the W3C guidance suggesting that a list of origins can be passed as part of | |
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox) | |
# don't seem to play nicely with this. | |
# |
L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
SSD random read ........................ 150,000 ns = 150 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
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* Copyright (c) 2013 Calvin Rien | |
* | |
* Based on the JSON parser by Patrick van Bergen | |
* http://techblog.procurios.nl/k/618/news/view/14605/14863/How-do-I-write-my-own-parser-for-JSON.html | |
* | |
* Simplified it so that it doesn't throw exceptions | |
* and can be used in Unity iPhone with maximum code stripping. | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining |
#import <UIKit/UIKit.h> | |
#import <ImageIO/ImageIO.h> | |
#import <MobileCoreServices/MobileCoreServices.h> | |
- (void)exportAnimatedGif | |
{ | |
UIImage *shacho = [UIImage imageNamed:@"shacho.png"]; | |
UIImage *bucho = [UIImage imageNamed:@"bucho.jpeg"]; | |
NSString *path = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"animated.gif"]; |