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NGif, Animated GIF Encoder for .NET

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1 Sep 2005CPOL 1.5M   18K   117   123
Create animated GIF images using C#.

Sample Image - NGif.gif

Introduction

Because .NET Framework can't create animated GIF images, NGif provides a way to create GIF animations in the .NET framework. It can create an animated GIF from several images and extract images from an animated GIF.

Using the code

C#
/* create Gif */
//you should replace filepath
String [] imageFilePaths = new String[]{"c:\\01.png","c:\\02.png","c:\\03.png"}; 
String outputFilePath = "c:\\test.gif";
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.Start( outputFilePath );
e.SetDelay(500);
//-1:no repeat,0:always repeat
e.SetRepeat(0);
for (int i = 0, count = imageFilePaths.Length; i < count; i++ ) 
{
 e.AddFrame( Image.FromFile( imageFilePaths[i] ) );
}
e.Finish();
/* extract Gif */
string outputPath = "c:\\";
GifDecoder gifDecoder = new GifDecoder();
gifDecoder.Read( "c:\\test.gif" );
for ( int i = 0, count = gifDecoder.GetFrameCount(); i < count; i++ ) 
{
 Image frame = gifDecoder.GetFrame( i ); // frame i
 frame.Save( outputPath + Guid.NewGuid().ToString() 
                       + ".png", ImageFormat.Png );
}

Points of Interest

Use Stream to replace BinaryWriter when you write a fixed-byte structured binary file.

History

  • 31 Aug 2005: Draft.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Comments and Discussions

 
QuestionCan I release a derived work please? Pin
sbridewell4-Sep-09 9:12
sbridewell4-Sep-09 9:12 
AnswerRe: Can I release a derived work please? Pin
jambonbill6-Oct-09 3:04
jambonbill6-Oct-09 3:04 
GeneralRe: Can I release a derived work please? Pin
sbridewell6-Oct-09 10:54
sbridewell6-Oct-09 10:54 
GeneralRe: Can I release a derived work please? Pin
jambonbill6-Oct-09 14:50
jambonbill6-Oct-09 14:50 
GeneralRe: Can I release a derived work please? [modified] Pin
sbridewell7-Oct-09 9:10
sbridewell7-Oct-09 9:10 
GeneralResize an animated gif background transparency Pin
vuivuivui26-Aug-09 21:23
vuivuivui26-Aug-09 21:23 
Questionhow to force no transparency Pin
Are Jay20-Aug-09 7:55
Are Jay20-Aug-09 7:55 
Generalit can't store more than 19 frames. Pin
inamgul26-Feb-09 1:00
inamgul26-Feb-09 1:00 
Hello friend, i tried to build animations with several pictures, but only 19 pictures could be stored.
Is this problem of the library or limitation of gif animations?
Please inform me.
Thanks.
inamullah, Pakistan.
GeneralAnimated gif Timeline Properties Pin
Daffy1012-Nov-08 22:01
Daffy1012-Nov-08 22:01 
Generalan better implement Pin
gOODiDEA.NET13-Oct-08 14:54
gOODiDEA.NET13-Oct-08 14:54 
GeneralRe: an better implement Pin
ecjob21-Oct-08 4:24
ecjob21-Oct-08 4:24 
GeneralRe: an better implement Pin
Spirch2-Jan-09 14:13
Spirch2-Jan-09 14:13 
GeneralRe: an better implement Pin
Ceyhun25-Jul-09 6:20
Ceyhun25-Jul-09 6:20 
GeneralRe: an better implement Pin
Nathanael Jones5-Jan-12 6:33
Nathanael Jones5-Jan-12 6:33 
Question怎样才能把体积减少一些啊?? Pin
ecjob11-Oct-08 8:31
ecjob11-Oct-08 8:31 
General一处bug Pin
interiv@qq.com6-Sep-08 17:05
interiv@qq.com6-Sep-08 17:05 
GeneralExporting frames [modified] Pin
jambonbill17-Aug-08 20:01
jambonbill17-Aug-08 20:01 
GeneralPerformance improvement Pin
Member 21880517-Aug-08 0:00
Member 21880517-Aug-08 0:00 
GeneralRe: Performance improvement Pin
jambonbill14-Aug-08 0:30
jambonbill14-Aug-08 0:30 
GeneralBugfix NextPixel() Pin
Member 21880516-Aug-08 23:49
Member 21880516-Aug-08 23:49 
GeneralRe: Bugfix NextPixel() Pin
PaulNeyman11-Jan-10 1:08
PaulNeyman11-Jan-10 1:08 
GeneralExcellent work! Pin
DigiOz Multimedia18-Jun-08 18:47
DigiOz Multimedia18-Jun-08 18:47 
QuestionThe gif be changed bigger? Pin
tintown_liu25-Dec-07 14:35
tintown_liu25-Dec-07 14:35 
AnswerRe: The gif be changed bigger? Pin
Shobin Mathew9-Jul-08 18:45
Shobin Mathew9-Jul-08 18:45 
Generalits important [modified] Pin
ganesh154-Nov-07 20:18
ganesh154-Nov-07 20:18 

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