• Adobe After Effects

  Masking Layer With Moving Object In The Background

  Posted by Charles Taylor on April 26, 2011 at 1:42 am

  I recently recorded a training session for work. It involved a presenter talking, usually at a podium, and a powerpoint presentation in the background. I was asked to make a training video for the company. I used a basic HD Handycam to tape the session so the powerpoint is not readable. I converted the slides to jpeg’s and and positioned them over the video in Premier Pro. My problem is when someone walks in front of the powerpoint the added layer obviously cuts their head off. For the most part the presenter is not in front of the screen. How would I edit the layer to prevent this from happening? I imported the Premier Pro project into After Affects but that is as far as my knowledge will take me. I’ve attached a picture to help describe my problem.

  Thanks in advance for any help!

  

  Michael Szalapski replied 15 years, 5 months ago 3 Members · 2 Replies
• 2 Replies

• 

  Tudor “ted” jelescu

  April 26, 2011 at 7:07 am

  You may get away with a difference matte:
  https://livedocs.adobe.com/en_US/AfterEffects/8.0/help.html?content=WS3878526689cb91655866c1103a9d3c597-7b4b.html

  Tudor “Ted” Jelescu
  Senior VFX Artist
• 

  Michael Szalapski

  April 27, 2011 at 1:51 pm

  This page [link] has some good rotoscoping resources.

  – The Great Szalam
  (The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)

  No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.

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