Tracking greenscreen in motion

Curveball_DreamTree wrote on 1/22/2021, 6:21 PM

Hi all,

Hope you guys all had a great week. I am trying to edit a video from the link below for someone's birthday and having a hard time.

(Link:

As you can imagine, I am trying to replace the green screen with another video. Initially I thought it would be an easy work using chroma keyer, but the problem is that the screen is not a straight rectangle and also moves around later in the video.

What I have in mind is to use mesh wrap to fit my video perfectly into the screen first, and when it moves, edit the position of the video frame by frame. The video is going to be around 10 seconds only, so it could be doable manually I think.

Could you guys walk me through how to do this? or link me some useful tutorial for this? Any kind of guidance or advice would be really helpful and appreciated. Many thanks in advance!

Comments

joelsonforte.br wrote on 1/22/2021, 9:21 PM

See this tutorial of the @ScrapyardFilms

NEW Motion Tracking in VEGAS Pro 18 - Easily Planar Track - VEGAS Tutorial #114

alifftudm95 wrote on 1/23/2021, 1:17 AM

That video just a slap on green screen, try look for the original video clip.

Use Beziere Mask to cut out the giant TV screen & motion track the mask to get more super accurate results. Once done, track using Motion Tracker Panel to track the perspective, and send the data to the video U wanna track.

watch this tutorial for better understanding

Curveball_DreamTree wrote on 1/23/2021, 4:19 AM

Thank both of you for the helpful advice.

I used Beziere mask to create a rectangle and pinned my video to it to follow the tracking. Not as precise as I wished, but it did work. I think the problem is that the camera moves too quick later in the video, and this is when the video starts drifting away from the screen. Looks like Vegas Pro 18 has a new feature on this and maybe does better, but I am using Vegas Pro 17. I think manually editing the key frames that are automatically placed with picture in picture effect would make the video look better..

But again, thank you for taking a look into this, and I really appreciate your time :)

walter-i. wrote on 1/23/2021, 4:43 AM

@Curveball_DreamTree
There are also tutorials explaining this for Vegas Pro 17 - where the procedure is slightly different - search on Youtube.