• Adobe After Effects

  Sound will not sync with the PNG-sequence I have made in Flash!

  Posted by Antoon on April 21, 2006 at 6:46 pm

  I have made a huge flash file about 6.000 frames.
  I have exported it as a PNG-sequence
  Then I have imported the sequence to After Effects, and added the music I used for the timing in Flash.
  But now it

  Antoon replied 20 years, 4 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Roman Laney

  April 22, 2006 at 6:28 am

  Antoon,
  You have discovered a little known disfunction with Flash. After about 2000 frames, Flash will loose sync (consistantly). The solution is to put sync pops at the front and back of the animation. That is a one frame flash frame with an accompaning loud beep of blip. When those are in the Flash file you will be able to sync the audio in AE. Once your new Footage and audio with sync pops are imported in, you will need to use the time streatch funtion in AE to scale the audio. I have found that scene lengths around 6 mins require a squash of 99.8 percent. Apply that to the audio and then synch your front pop. Then check the end pop. You’ll have to finesse it to get it just right. I have asked my pals with real editing systems, Avids and such, and this sorta thing is pretty common place… Getting picture lock is hard, you just have to do the work to get the synch. Let us know if that helps.

  -R
• 

  Antoon

  April 24, 2006 at 9:50 am

  Tanks a bunch!
  Knowing about this error helps a whole lot!
  We are working on a music video, so I think what we are going to do is to stretch the animation, not the sound..
  Next time I think we are going to stretch the sound in AE first, import the altered sound to flash.
  Then my Flash sequence should sync with the original sound in AE!?
  Have you tried this?
  Do you think this would work!?
  Tanks again!

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