user33468: I am new to AMV editing and one of my favorite editors is zneptun. I've been trying to figure out what this effect he uses in his videos is but I've had no luck. If any of you guys know please tell me cause I'd love to use it!! It's not just a simple invert either, the look is completely different which is what confuses me as well.
Here's a link to the video, you can see the effect between 3-4 seconds, and 6 seconds. Pretty much every transition: 



Any help is appreciated.

user1950: There are dozens of ways to get that kind of colour shift. The way I would do it is by using colour/response curves, and perhaps hue / saturation controls. Most compositing, grading and editing software have these effects.
Here's a two minute attempt in AE, trying to match the leftmost panel to the 2nd from the right. It needs work, but I got bored.

Looks like there's some chromatic aberation or mis-registration effect there as well. You can do that by making a copy of the original layer, altering the curves and using transfer modes (add, overlay, multiply, whichever works) to composite it with the original. Below, I copied the original layer, used overlay transfer mode, Nudged it 20px to the right and mucked around with the curves (mainly just inverting the luma value). You can see the effect control for this layer in this screenie:

Then you can animate all the parameters.

33468: <p>I am new to AMV editing and one of my favorite editors is zneptun. I've been trying to figure out what this effect he uses in his videos is but I've had no luck. If any of you guys know please tell me cause I'd love to use it!! It's not just a simple invert either, the look is completely different which is what confuses me as well.</p>
<p>Here's a link to the video, you can see the effect between 3-4 seconds, and 6 seconds. Pretty much every transition: <div class="youtube-embed"><div>
                <iframe width="640px" height="395px" src="https://www.youtube.com/embed/13NDjmcem7I?start=5"></iframe>
            </div></div></p>
<p><a href="https://i.stack.imgur.com/CJUnT.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CJUnT.jpg" alt="enter image description here" /></a></p>
<p>Any help is appreciated.</p>
 1950: <p>There are dozens of ways to get that kind of colour shift. The way I would do it is by using colour/response curves, and perhaps hue / saturation controls. Most compositing, grading and editing software have these effects.</p>
<p>Here's a two minute attempt in AE, trying to match the leftmost panel to the 2nd from the right. It needs work, but I got bored.</p>
<p><a href="https://i.stack.imgur.com/AZrWR.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AZrWR.jpg" alt="enter image description here" /></a></p>
<p>Looks like there's some chromatic aberation or mis-registration effect there as well. You can do that by making a copy of the original layer, altering the curves and using transfer modes (add, overlay, multiply, whichever works) to composite it with the original. Below, I copied the original layer, used <strong>overlay</strong> transfer mode, Nudged it 20px to the right and mucked around with the curves (mainly just inverting the luma value). You can see the effect control for this layer in this screenie:</p>
<p><a href="https://i.stack.imgur.com/AFjE2.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AFjE2.jpg" alt="enter image description here" /></a></p>
<p>Then you can animate all the parameters.</p>
