---
title: "SwfWriter Class"
canonical: https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_SwfWriter.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# SwfWriter Class
 
This class enables you to write SWF movies.
 
**Namespace:** [Aurigma.GraphicsMill.Codecs](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Codecs.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public NotInheritable Class SwfWriter _Inherits FormatWriter
```
 
```csharp
public sealed class SwfWriter : FormatWriter
```
 
## Remarks
  
SWF format was developed by Macromedia Inc. It stands for "Shockwave File Format". The SWF file format is ideal for vector graphics that may have audio and may even be interactive. To open the SWF file the web browser may use the flash plug-in.
 
Graphics Mill for .NET allows creating SWF movies built from the multiple bitmaps. Bitmaps can be indexed or 8 bit per channel RGB images (both with and without alpha).
 
## Examples
  
To create an animated SWF movie we need to use the SwfWriter class. The movie is created from the several JPEG files.
 
```
Dim dir As String = "C:\Documents and Settings\All Users\Documents\My Pictures\Sample Pictures\"
Dim images As String() = {"Blue hills.jpg", "Sunset.jpg", "Water lilies.jpg", "Winter.jpg"}

Dim bitmap As New Aurigma.GraphicsMill.Bitmap

Dim writer As New Aurigma.GraphicsMill.Codecs.SwfWriter("C:\Mountain.swf")

For Each image As String In images
    bitmap.Load(dir & image)

    Dim frame As New Aurigma.GraphicsMill.Codecs.SwfFrame
    frame.Compression = Aurigma.GraphicsMill.Codecs.CompressionType.Jpeg
    frame.Quality = 30
    frame.Delay = 100
    frame.SetBitmap(bitmap)

    writer.AddFrame(frame)

    frame.Dispose()
Next

bitmap.Dispose()

writer.Dispose()
```
 
```csharp
string dir = @"C:\Documents and Settings\All Users\Documents\My Pictures\Sample Pictures\";
string[] images = {"Blue hills.jpg", "Sunset.jpg", "Water lilies.jpg", "Winter.jpg"};

using (Aurigma.GraphicsMill.Bitmap bitmap = 
           new Aurigma.GraphicsMill.Bitmap())
{
    using (Aurigma.GraphicsMill.Codecs.SwfWriter writer = 
               new Aurigma.GraphicsMill.Codecs.SwfWriter(@"C:\Mountain.swf"))
    {
        foreach (string image in images)
        {
            bitmap.Load(dir + image);

            using (Aurigma.GraphicsMill.Codecs.SwfFrame frame = 
                       new Aurigma.GraphicsMill.Codecs.SwfFrame())
            {
                frame.Compression = Aurigma.GraphicsMill.Codecs.CompressionType.Jpeg;
                frame.Quality = 30;
                frame.Delay = 100;
                frame.SetBitmap(bitmap);

                writer.AddFrame(frame);
            }
        }
    }
}
```
 
## Inheritance Hierarchy
  
- [System.Object](http://msdn2.microsoft.com/en-us/e5kfa45b)
    - [Aurigma.GraphicsMill.SyncHandler](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_SyncHandler.htm.md)
        - [Aurigma.GraphicsMill.Codecs.FormatWriter](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_FormatWriter.htm.md)
            - Aurigma.GraphicsMill.Codecs.SwfWriter
 
## Thread Safety
 Static members of this type are safe for multi-threaded operations. Instance members of this type are safe for multi-threaded operations.
 
## Object Model

[![](https://www.graphicsmill.com/docs/gm5/Aurigma.GraphicsMill_ObjectModel_230.png)](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_SwfWriter.htm.md)
![](https://www.graphicsmill.com/docs/gm5/ObjectModel2.png)[![](https://www.graphicsmill.com/docs/gm5/Aurigma.GraphicsMill_ObjectModel_107.png)](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_IEncoderOptions.htm.md)
![](https://www.graphicsmill.com/docs/gm5/ObjectModel1.png)[![](https://www.graphicsmill.com/docs/gm5/Aurigma.GraphicsMill_ObjectModel_108.png)](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_IFrame.htm.md)
 
## Supported Pixel Formats

| Member Name | Description |
| --- | --- |
| **Format1bppIndexed** | 1 bit per pixel. Indexed. |
| **Format4bppIndexed** | 4 bits per pixel. Indexed. |
| **Format8bppIndexed** | 8 bits per pixel. Indexed. |
| **Format8bppGrayScale** | 8 bits per pixel. Grayscale. 8 bits are used for luminosity level. |
| **Format16bppAGrayScale** | 16 bits per pixel. Grayscale with alpha channel. 8 bits are used for alpha channel and other 8 bits are used for luminosity level. |
| **Format24bppRgb** | 24 bits per pixel. RGB. 8 bits each are used for the red, green, and blue components. |
| **Format32bppArgb** | 32 bits per pixel. RGB with alpha channel. 8 bits each are used for the alpha, red, green, and blue components. |
| **Format32bppCmyk** | 32 bits per pixel. CMYK. 8 bits each are used for the cyan, magenta, yellow, and black components. |
| **Format40bppAcmyk** | 40 bits per pixel. CMYK with alpha channel. 8 bits each are used for the alpha, cyan, magenta, yellow, and black components. |
 
## See Also

### Reference

- [SwfWriter Members](https://www.graphicsmill.com/docs/gm5/AllMembers_T_Aurigma_GraphicsMill_Codecs_SwfWriter.htm.md)
- [Aurigma.GraphicsMill.Codecs Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Codecs.htm.md)