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Date: Wed, 16 Aug 1995 18:32:53 -0400
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Subject: Re: PAR pattern flashing?
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(John Ferrel )
>>I have rendered a couple of animations to my PAR and when I play them back
>>at 30 FPS it flashes a "funny" (or not so) checkerboard (red & blue) every
>>couple of frames.  This doesn't appear at slower playback rates.  My block
>>limit is set as high as allowed (according to documentation) and Q factor
at
>>23.  I am using a Seagate 540 MB drive.  What am I doing wrong?

(Carl Andrew Johnson)
>I get the same thing on occasion. Sometimes you have to turn the machine
>off and restart it. And other times... you have to re-render the
>animation. We just had a thread on scrambled PAR anims. To keep it from
>happening you need to bathe your PAR in liquid nitrogen.

I believe it has to do with where the animation lands on the disk as it's
being
assembled. I've found that if the disk is getting full, and it's been a while
since
the last re-org, you'll occasionally get a scrambled animation. If you don't
have
the time to re-render it, export the anim as full IFF frames to the
harddrive.
Do a clean up on the disk, and then reimport the IFF frames. Exporting and
reimporting in PAR format DOES NOT WORK. You'll just end up with the
same garbled mess. Likewise, if you just do a cleanup without the export and
reimport, you'll still have the same problem. ( I just went through this
myself
this past weekend ). One easy way to trigger this problem is to save part of
an animation at one block size, and then join the rest to it with a different
block
size. The PAR freeks out during playback at the boundry between the two
different block sizes.

----------------------------------
Dan Esmond
Animagic
Austin, TX
512-258-4120

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