Two scenes on screen with slow reveal between them

[Ron Hunter]

I want to use a video effect but I don't know how to do it and I hope someone here can help me.

Dave Dugdale has a good review of Canon Rebel T4i vs T5i, and in the video he talks about Magic Lantern software that can improve T4i video quality. To display how great that software is, Dugdale displays video shot with and without the software. At first all you can see on screen is the video shot without the software, but a dividing line running from screen top to screen bottom slowly moves from screen left to screen right. As the line moves across the screen, the image on the left is replaced with the "shot with software" image so you can immediately see the impact.

Would someone kindly explain how I can do that?

[TreeTopsRanch]

A slow cross fade from one video to another with actually fading?

[momoffduty]

Track one would have a video playing. Track two would have video clip "B" with the crop or clip effect keyframed as a reveal. Track 3 would have a shape made in the Titler to give the line or a psd file. Hard to say without seeing the effect you mentioned.

Edit: keyframe the shape too to move from left to right.

[Bob]

This is easy to do.

As Cheryl said, place video A on track 1 and video B on track 2 both starting at the same time. Apply the Crop effect to video B. In the effect properties panel, twirl down the Crop entry and set each parameter listed to zero. If you drag the "left" slider to the right you will notice that the left edge of video B will be progressively hidden revealing video A beneath. Set "left" back to zero. With the current time indicator set at the beginning of the clip, click on the stopwatch symbol on the "crop" effect line to turn on keyframing. Now move the current time indicator to where you want the entire video A to be revealed. Set the Crop "left" parameter to 100. That's it. Play back the timeline to see the reveal. If it's too fast, move the end keyframe to a later time.

If you feel you need a line to make the divide more apparent, apply the Drop Shadow effect to video B. Twirl down the Drop Shadow entry in the effect properties panel. Set "softness" to 0 to get a hard line, set "direction" to -90 to put the shadow on the left side, and set the "distance" to a value that gives you the thickness you want. You can also set the shadow color. You do not need to keyframe the drop shadow effect, the shadow will follow the edge of the crop.

[Peru]

If you feel you need a line to make the divide more apparent, apply the Drop Shadow effect to video B. Twirl down the Drop Shadow entry in the effect properties panel. Set "softness" to 0 to get a hard line, set "direction" to -90 to put the shadow on the left side, and set the "distance" to a value that gives you the thickness you want. You can also set the shadow color. You do not need to keyframe the drop shadow effect, the shadow will follow the edge of the crop.

Brilliant.

[momoffduty]

Yes the drop shadow is Brilliant Bob!! I was thinking about this last night and trying to come up with an easier way than keyframing the shape.

[Ron Hunter]

Wow, that nailed it. That was EXACTLY what I was looking for. Thanks so much for the wonderful support!!!