Adding a watermark to Video and Audio Files

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Hello all.

I need some dll or code that helps me add a watermark to audio or video files.
I did some search online but most results included Microsoft.Directx which I couldn't can you please help me with this.

Thnx in advance

Posted 7-May-12 3:13am

AR1988

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Sandeep Mewara · Answer 1 · 2012-05-07T03:53:00

Solution 1

I doubt if any .NET component or free component allows the same. You might need a third party component for it.

Have a look at the following discussions:
Digital SIgnature on video[^]
How to add watermark on video file? [^]

Posted 7-May-12 3:53am

Sandeep Mewara

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AR1988 7-May-12 10:08am

I found nothing useful following your links.

Sandeep Mewara 7-May-12 10:12am

Ok. Good to know.

bbirajdar · Answer 2 · 2012-05-07T04:09:00

Solution 2

Creating a Watermarked Photograph with GDI+ for .NET[^]

http://stackoverflow.com/questions/1224653/place-watermark-image-on-other-images-c-asp-net[^]

Build a Simple Watermarking Utility in C#[^]

Video

http://social.msdn.microsoft.com/Forums/en-AU/csharplanguage/thread/4b745477-32b8-4133-ab50-6aa82628fbec[^]

Posted 7-May-12 4:09am

bbirajdar

Comments

MuhtarQong 7-May-12 15:18pm

You may add water mark for each frame of the video; Please see the following links. It might help you.
http://artuxsoft.com/document_imaging.aspx

MuhtarQong · Answer 3 · 2012-05-07T09:52:00

I have made a function for you. You may call this function for each frame of your video which frames are suppose to be water marked.

// Created by Muhtar Qong: May 7, 2012
public Image AddWaterMarkToVideoFrames(Image videoFrame, Image waterMark, float transparency)
{
System.Drawing.Imaging.ImageAttributes ia = new System.Drawing.Imaging.ImageAttributes();
System.Drawing.Imaging.ColorMatrix cm = new System.Drawing.Imaging.ColorMatrix();
cm.Matrix33 = transparency;
ia.SetColorMatrix(cm);
Graphics g = null;
try
{
g = Graphics.FromImage(videoFrame);
// Rene Des Cartes: 1596; You may define the rect size freely.
Rectangle rect = new Rectangle((int)(videoFrame.Width * 0.1), (int)(videoFrame.Height * 0.2), (int)(videoFrame.Width * 0.8), (int)(videoFrame.Height * 0.6));
g.DrawImage(waterMark, rect, 0, 0, waterMark.Width, waterMark.Height, GraphicsUnit.Pixel, ia);
return videoFrame;
}
catch (Exception ex)
{
throw ex;
}
finally
{
g.Dispose();
}
}

Please copy this and try it.

C#