---
title: "AviWriter Constructor (String)"
canonical: https://www.graphicsmill.com/docs/gm5/C_Aurigma_GraphicsMill_Codecs_AviWriter_ctor_1_362212bd.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/)

# AviWriter Constructor (String)
 
Creates and initializes new [AviWriter](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_AviWriter.htm.md) class instance. It also opens this writer on specified file.
 
**Namespace:** [Aurigma.GraphicsMill.Codecs](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Codecs.htm.md)
 **Assembly:** Aurigma.GraphicsMill.Codecs.AviProcessor (in Aurigma.GraphicsMill.Codecs.AviProcessor.dll)
 
## Syntax
  
```
Public Sub New ( _fileName As String _
)
```
 
```csharp
public AviWriter(string fileName
)
```
 
### Parameters
 
 - fileName
     - Type: [System.String](http://msdn2.microsoft.com/en-us/s1wwdcbf)
Name of the file to open the writer on.
 
## Remarks
  
When you open the writer with this constructor, you will not be able to change the writer settings (such as dimensions, compressor settings, frames per second, etc). So use this constructor only if you are sure that you need not change the writer parameters. Otherwise you should:
 
1. Use the [constructor without parameters](https://www.graphicsmill.com/docs/gm5/C_Aurigma_GraphicsMill_Codecs_AviWriter_ctor.htm.md).
2. Initialize all necessary settings.
3. Use the [Open(String)](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Codecs_FormatWriter_Open_1_bb3a7a4f.htm.md) method to open the writer (when you are sure that the writer settings should not be changed).
   
## See Also

### Reference

- [AviWriter Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_AviWriter.htm.md)
- [AviWriter Overload](https://www.graphicsmill.com/docs/gm5/O_T_Aurigma_GraphicsMill_Codecs_AviWriter_ctor.htm.md)
- [Aurigma.GraphicsMill.Codecs Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Codecs.htm.md)