Making TV Scan Lines
Using Photoshop (any version)
[Written By Alexandra
from Kid Productions]
Making TV Scan Lines
1. Open a new document with the background set to transparent.
2. Zoom your window to about 600% and grab the rectangle selection tool.
Now create a 1 pixel tall rectangle and fill it with black.

3. Now take the selection tool and create a rectangle selection that
leaves 1 pixel empty above the black rectangle and rests along it's
other edges.
4. Now go to Edit/Define pattern. You can choose a name for it, TV Scan
Lines if you want.

5. Now just choose any image you want and create a new layer and place
that layer above your image. Now go to Edit/Fill and choose your newly
created pattern and fill the layer.