how do I place two videos to play as one

fishycomics wrote on 4/4/2015, 6:56 AM

Hi. Need some help to figure out how to do some editing, and my question, will do my best to explain?

I got a video me walking on a Log,i walk across,I want another shot of me following behind about 2 seconds, so you see two of me walking hte long, from left to right? I do not want this to be a ghost whereonly 50% opacity, or transparancy. I know I can do a freeze frame and leave atrailof people. How can I go about having a video overlay follow behind.

I understand it may have to do with Overlay? and masking.

I tried putting the vid on track 1, ad repeat on track two, and placed 2 sec's later,but using alpha mask did not work.

thank you, if you candirect to a how to, and actually do this that be A PLUS.

Comments

johnebaker wrote on 4/4/2015, 10:12 AM

What you need is a moving mask to remove everything except you walking in the second clip.

Was the camera fixed eg on a tripod or something else while you walked across the log or as there someone else controlling the camera and panning with you as you walked across the log?

Either way creating a moving mask may be very diffiicult or impossible.

Can you export a single image from the video and post it here so we can see what we are dealing with?

John EB

browj2 wrote on 4/4/2015, 10:42 AM

Hi,

Here is the way I did it. I didn't have me walking from left to right, but you should be able to get the idea.

In your case, you would need to start off-screen, enter, walk across.

Place the clip on track 1 and a copy on track 3 about 2 seconds later. Insert an alpha mask where the overlap starts. Zoom in on the alpha mask to mask so that it will always cover the screen when moved. Move the middle B-W border to the left of where you appear in the first video and to the right of where you start to appear in the second clip. Use keyframing to move the mask to the right. As soon as you disappear at the right of the screen on track 1, you don't need the mask anymore.

You will likely have to play with the Threshold Video 2 to get it to match video 1 and maybe even have to keyframe it.

Screen shot from my new VPX7.

johnebaker wrote on 4/4/2015, 11:41 AM

@ John CB

Nice solution for where the camera is static.

Cheers

John

fishycomics wrote on 4/4/2015, 5:26 PM

Yes My video is ona tripod I am walking from left to right of hte screen.

browj2 wrote on 4/4/2015, 5:50 PM

Yes, the tripod is most important. Next is to make sure that there is nothing else moving that could interfere with the continuity. Streamflow should not be difficult but if something comes down the stream, it could interfere.

One thing that I didn't try was a mask with some graduation from black to white at the interface. That could help smooth out the interface and make it less obvious that there is a mask.

Do you need more explanation or do you have it figured out?