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Posted 1 Sep 2005

NGif, Animated GIF Encoder for .NET

, 1 Sep 2005 CPOL
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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

/* 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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gOODiDEA.NET
China China
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Comments and Discussions

 
GeneralRe: [Bug] Last two pixels of every frame is wrong. Pin
morhost28-Feb-12 4:51
membermorhost28-Feb-12 4:51 
GeneralRe: [Bug] Last two pixels of every frame is wrong. Pin
Member 1034753121-Oct-13 8:23
memberMember 1034753121-Oct-13 8:23 
GeneralTransperency Pin
JeremiasK24-Feb-11 7:45
memberJeremiasK24-Feb-11 7:45 
GeneralRe: Transperency Pin
v2leon28-Aug-11 22:49
memberv2leon28-Aug-11 22:49 
GeneralRe: Transperency Pin
maoshu22-Dec-12 0:14
membermaoshu22-Dec-12 0:14 
GeneralRe: Transperency Pin
Froogabadoodle4-Jun-13 4:48
memberFroogabadoodle4-Jun-13 4:48 
QuestionSecurity Warning [modified] Pin
jedi-samurai18-Dec-10 21:53
memberjedi-samurai18-Dec-10 21:53 
AnswerRe: Security Warning [modified] Pin
Jajnick1-Sep-12 5:14
memberJajnick1-Sep-12 5:14 
>Is anyone encountered with this kind of problem with this dll?

Yes, every Norton user. The solution to this is to install some normal security software, which is used by normal people, for example, Kaspersky Antivirus 2012.
GeneralLZWEncoder Pin
tom roarty12-Dec-10 4:59
membertom roarty12-Dec-10 4:59 
QuestionGifDecoder.cs exceptions Pin
Divya Muppa29-Sep-10 10:16
memberDivya Muppa29-Sep-10 10:16 
GeneralTransparency Pin
gameguy2716-Aug-10 6:39
membergameguy2716-Aug-10 6:39 
GeneralBug involving the first frame Pin
Dataflashsabot23-Jan-10 2:56
memberDataflashsabot23-Jan-10 2:56 
GeneralI've released a derived work Pin
sbridewell24-Oct-09 10:44
membersbridewell24-Oct-09 10:44 
GeneralRe: I've released a derived work Pin
jambonbill3-Nov-09 15:39
memberjambonbill3-Nov-09 15:39 
General"The process cannot access the file xpto because it is being used by another process". Pin
chico@dsi29-Sep-09 23:52
memberchico@dsi29-Sep-09 23:52 
GeneralRe: "The process cannot access the file xpto because it is being used by another process". Pin
Rassler481-Mar-13 1:16
memberRassler481-Mar-13 1:16 
QuestionCan I release a derived work please? Pin
sbridewell4-Sep-09 9:12
membersbridewell4-Sep-09 9:12 
AnswerRe: Can I release a derived work please? Pin
jambonbill6-Oct-09 3:04
memberjambonbill6-Oct-09 3:04 
GeneralRe: Can I release a derived work please? Pin
sbridewell6-Oct-09 10:54
membersbridewell6-Oct-09 10:54 
GeneralRe: Can I release a derived work please? Pin
jambonbill6-Oct-09 14:50
memberjambonbill6-Oct-09 14:50 
GeneralRe: Can I release a derived work please? [modified] Pin
sbridewell7-Oct-09 9:10
membersbridewell7-Oct-09 9:10 
GeneralResize an animated gif background transparency Pin
vuivuivui26-Aug-09 21:23
membervuivuivui26-Aug-09 21:23 
Questionhow to force no transparency Pin
AreJay20-Aug-09 7:55
memberAreJay20-Aug-09 7:55 
Generalit can't store more than 19 frames. Pin
inamgul26-Feb-09 1:00
memberinamgul26-Feb-09 1:00 
GeneralAnimated gif Timeline Properties Pin
Daffy1012-Nov-08 22:01
memberDaffy1012-Nov-08 22:01 

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