converting av to vga using the arduino uno

yo my home dogs I want to convert av video into vga using my arduino uno. my understanding is that arduino has the capibility to convert inputs into outputs

thanks in advance,
Timothy J. Powell

The Arduino has the capabilities to convert inputs to outputs but it does that best for digital signals although analog signals can be processed too but at a much slower rate. The analog video signals are of a much too high frequency for this processor to handle. It's even not feasible to do it digitally anyway, some analog hardware is much better suited for this.

For your specific problem you first have to define what a AV video signal is. There are many standards in this field (composite, component, s-video, etc.). If you have the name of your standard, google for it together with the word VGA and you'll get converters ready made.