• Boris FX Particle Illusion

  Working with layers and blockers …

  Posted by Dennis Fassbaender on May 10, 2008 at 6:06 pm

  .. Hello Alan!
  I´m not sure if there is a way to do that, but here are some ideas for further versions:

  By working on a project i used 3 Layers:
  1- Original video footage with ONE blocker (some houses)
  2- Just a Blocker for some flames
  3- Another Blocker for more flames 🙂

  When i use a blocker on the Layers 2/3 the blocker become BLACK- because there is no background loaded.
  When i take my footage as background, the blocker from layer one is not visable.

  The idea is to “lock” the layers to one layer-background. So the blockers of the other layers are not black… do you understand what i mean.

  The 2nd thing is this:
  I use my blockers with an offset-txt (some tracking data).
  So i make the flames burn behind some houses.
  But there is this HARD EDGE. A feature “blur blocker” would be fine, so you have a smooth edge … and you also don´t need perfect tracking-information, because the blur would give a little tolerance in movement.

  Greets,
  Dennis Fassbaender

  Dennis Fassbaender replied 18 years ago 3 Members · 4 Replies
• 4 Replies

• 

  Alan Lorence

  May 10, 2008 at 9:44 pm

  Blurring or “feathering” blockers is a feature that a lot of people want.

  You can make blockers use images from lower layers by opening the properties dialog for the blocker and checking the “use layers below for bg image” option. (If I understand your problem)

  Alan.

  http://www.wondertouch.com
• 

  Dennis Fassbaender

  May 11, 2008 at 8:19 am

  Yes you did.
  Thank you, that helps!

  I can understand why much people whant this blurr!
  I saved a video (with blockers) with an alpha channel and used a gaussian blurr.
  Okay, so EVERYTHING is blured, but the hard edge isn´t there.

  For Example:
  https://www.myvideo.de/watch/4154110/Komet_stuerzt_auf_Monschau

  But would be great to have it in the next update or other further versions.

  Thanks a lot,
  Dennis F.
• 

  Jose Burgos

  May 12, 2008 at 2:24 pm

  If you use a compositing program, like I do, then create the matte image first and then load it to use for the blocker in PI.
  Then in your compositor, blur the edge using the matte for the particles.

  Take care,

  Jose Burgos
  http://www.burgosfx.com
• 

  Dennis Fassbaender

  May 12, 2008 at 3:58 pm

  But there is camera movement, and my trackings are too bad (DV-matrial),
  so i blurr the whole clip…
  Sorry my english is bad, did i understand you right?

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