Tile tracker
Tile tracker is a feature I have created for creating
GIF animations
of NES scenes.
It is available as a stand-alone program here:
http://bisqwit.iki.fi/source/animmerger.html
http://bisqwit.iki.fi/source/animmerger.html
In the past, it used to be a direct patch to the emulators.
This was done because the emulator could directly give information regarding the background layers' scrolling position.
Now, as a stand-alone program, global scrolling has to be deduced algorithmically from the image contents. It is a bit slower, but it no longer depends on the emulator.