• Adobe After Effects

  Strange Flicker when slowing down Video

  Posted by Ace Billet on August 9, 2005 at 8:14 am

  I have some DV footage (PAL) captured via FCP.
  When I try to slow down the footage in AE (Stretch 200%)
  I get a strange flicker in the background (the Pool)
  https://www.billet.co.il/webpics/Pool.jpg

  Is it because there is a lot of detail in the background ?
  Tests I did with a Sony Handycam looked fine, but this was shot on a PD150.
  I also tried slowing the video in Shake but I get the same result.

  And if I deinterlace the video I get an ugly, strobing motion.
  The guy is running around the pool, pretty fast motion.
  Ideas will be welcomed.

  cheers
  ace

  Michael Szalapski replied 21 years ago 3 Members · 3 Replies
• 3 Replies

• 

  Michael Szalapski

  August 9, 2005 at 1:07 pm

  Have you tried applying frame blending to your layer?

  – The Great Szalam
  (The ‘Great’ stands for ‘Not So Great)

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

  Filip Vandueren

  August 10, 2005 at 3:36 am

  If it’s the horizontal lines in the tiles flickering, then its’ because they’re less than 1 pixel high, so they’re present on only 1 of the two fields.
  When you slow down, you see the two fields one by one,

  you might try setting ‘preserve edges’ in the interpret footage dialog, but that doesn’t always work that good.
• 

  Michael Szalapski

  August 10, 2005 at 11:12 am

  Also, do you have it set to best quality and full resolution?

  Sometimes I forget to tick those boxes then I smack myself in the forehead.

  – The Great Szalam
  (The ‘Great’ stands for ‘Not So Great)

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

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