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NGif, Animated GIF Encoder for .NET

By , 1 Sep 2005
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Sample Image - NGif.gif


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 );
//-1:no repeat,0:always repeat
for (int i = 0, count = imageFilePaths.Length; i < count; i++ ) 
 e.AddFrame( Image.FromFile( imageFilePaths[i] ) );
/* 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.


  • 31 Aug 2005: Draft.


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

QuestionGreat tool, saved me a lot of work! Pinmembermingonn29-Jan-14 13:58 
GeneralGreate Job :) PinmemberVinaymm12-Dec-13 0:51 
QuestionWhat is SetDispose() ??? PinmemberNicke Da Silva Manarin4-Dec-13 11:07 
Questionsize limit? PinmemberMember 39966278-Nov-13 9:47 
AnswerRe: size limit? PinmemberNicke Da Silva Manarin21-Feb-14 11:43 
QuestionFileStream vs Stream PinmemberMember 1033860916-Oct-13 6:32 
AnswerRe: FileStream vs Stream PinmemberNicke Da Silva Manarin22-Oct-13 8:01 
QuestionCode Improvement [modified] PinmemberNicke Da Silva Manarin12-Oct-13 9:19 
QuestionI get black backgrounds. Has anyone ever come up with a solution for this? PinmemberMember 946120617-Sep-13 20:39 
SuggestionDelay method PinmemberSylvainguer17-Jul-13 21:58 
QuestionHow do i add this to my project? Pinmemberdroidap24-May-13 8:16 
AnswerRe: How do i add this to my project? PinmemberMember 1029123023-Sep-13 0:33 
QuestionI created a new dll file which is a wrapper from c++ of a gif animation if you want Pinmemberchocolade18-May-13 4:32 
QuestionSystem.Windows.Media.Imaging.GifBitmapEncoder PinmemberPie At The Raven16-May-13 12:14 
AnswerRe: System.Windows.Media.Imaging.GifBitmapEncoder PinmemberMember 1029123023-Sep-13 0:31 
QuestionNot properly disposing/closing images Pinmemberrdavidson228-Jul-12 11:26 
QuestionThank you PinmemberMember 835751315-Jun-12 16:30 
QuestionBugfixed version Pinmemberavianbc11-Jun-12 14:22 
GeneralMy vote of 5 Pinmembermanoj kumar choubey4-Mar-12 19:47 
Bug[Bug] Last two pixels of every frame is wrong. Pinmembercodipro7-Jan-12 2:14 
I tested your code and saw that the last two pixels of each frame are wrong.
You can see it on your example image when you zoom in.
In your case the last pixels are red.I think thats not right.
GeneralRe: [Bug] Last two pixels of every frame is wrong. Pinmembermorhost28-Feb-12 4:51 
GeneralRe: [Bug] Last two pixels of every frame is wrong. PinmemberMember 1034753121-Oct-13 8:23 
GeneralTransperency PinmemberJeremiasK24-Feb-11 7:45 
GeneralRe: Transperency Pinmemberv2leon28-Aug-11 22:49 
GeneralRe: Transperency Pinmembermaoshu22-Dec-12 0:14 
GeneralRe: Transperency PinmemberFroogabadoodle4-Jun-13 4:48 
QuestionSecurity Warning [modified] Pinmemberjedi-samurai18-Dec-10 21:53 
AnswerRe: Security Warning [modified] PinmemberJajnick1-Sep-12 5:14 
GeneralLZWEncoder Pinmembertom roarty12-Dec-10 4:59 
QuestionGifDecoder.cs exceptions PinmemberDivya Muppa29-Sep-10 10:16 
GeneralTransparency Pinmembergameguy2716-Aug-10 6:39 
GeneralBug involving the first frame PinmemberDataflashsabot23-Jan-10 2:56 
GeneralI've released a derived work Pinmembersbridewell24-Oct-09 10:44 
GeneralRe: I've released a derived work Pinmemberjambonbill3-Nov-09 15:39 
General"The process cannot access the file xpto because it is being used by another process". Pinmemberchico@dsi29-Sep-09 23:52 
GeneralRe: "The process cannot access the file xpto because it is being used by another process". PinmemberRassler481-Mar-13 1:16 
QuestionCan I release a derived work please? Pinmembersbridewell4-Sep-09 9:12 
AnswerRe: Can I release a derived work please? Pinmemberjambonbill6-Oct-09 3:04 
GeneralRe: Can I release a derived work please? Pinmembersbridewell6-Oct-09 10:54 
GeneralRe: Can I release a derived work please? Pinmemberjambonbill6-Oct-09 14:50 
GeneralRe: Can I release a derived work please? [modified] Pinmembersbridewell7-Oct-09 9:10 
GeneralResize an animated gif background transparency Pinmembervuivuivui26-Aug-09 21:23 
Questionhow to force no transparency PinmemberAreJay20-Aug-09 7:55 
Generalit can't store more than 19 frames. Pinmemberinamgul26-Feb-09 1:00 
GeneralAnimated gif Timeline Properties PinmemberDaffy1012-Nov-08 22:01 
Generalan better implement PinmembergOODiDEA.NET13-Oct-08 14:54 
GeneralRe: an better implement Pinmemberecjob21-Oct-08 4:24 
GeneralRe: an better implement PinmemberSpirch2-Jan-09 14:13 
GeneralRe: an better implement PinmemberCeyhun25-Jul-09 6:20 
GeneralRe: an better implement PinmemberNathanael Jones5-Jan-12 6:33 

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