DVD Video of Flash animation “ghosting”?

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DVD Video of Flash animation “ghosting”?

Postby patach » Mon Jul 23, 2007 8:35 pm

I burned a copy of my Flash animation on a DVD video and played it on my DVD player to watch on the TV. To my surprise, fast movements fell victim to a weird “ghost” effect. The previous frame would show faded in.

Here is the ghosting effects on the character.

Image

What have I done? I've animated the cartoon in 24fps. I believe somewhere the video converted it to 29.97 fps. But I didn't detect a “time loss” difference. Is this just a DVD problem? Am I looking the wrong way?
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Postby www.stephenstudios.com » Tue Jul 24, 2007 6:40 am

I think it might be a DVD problem. I've burned my film onto DVD and when I played it on the television it came out exactly the way it was on the computer.

What DVD program are you using? and what file format did you put on the DVD?
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Postby patach » Tue Jul 24, 2007 8:00 am

I'm using DVD Encore 1.5 and the movie file I imported into the program is a quicktime animation file.
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Postby patach » Tue Jul 24, 2007 8:06 am

And it's also a NTSC DVD
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Postby greasypigstudios » Tue Jul 24, 2007 10:05 am

This is an interlacing issue. What framerate did you have your original quicktime at? an ntsc dvd is 29.97 frames per second. If you have aftereffects you can deinterlace the footage have it be 29.97 and then output it into another quicktime that you can take into Encore.
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Postby patach » Tue Jul 24, 2007 10:30 am

Yes, I have AE, what is the procedure to do this?

The quicktime has the sound included, will it get lost again with AE?

I believe the quicktime was rendered at 24 fps just like the animation.
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Postby greasypigstudios » Tue Jul 24, 2007 10:59 am

Create a composition in AE that's 29.97 DV NTSC. Then when you import your quicktime, right click on the file in the project folder, and select "interpret footage" there will be an option there to deinterlace footage.

Then when you export the quicktime back out in the render queue, make sure audio is selected.
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Postby animonger » Tue Jul 24, 2007 1:20 pm

To go from 24fps in Flash to 29.97fps NTSC DVD it's best to do a 3:2 Pulldown to eliminate flickering and choppy playback.

First render out a 24 bit png sequence from Flash then import the pngs into After Effects.

Export your sound separately as a wav or mov file.

AE steps:
Drop your imported png footage into a comp that's 24fps and the exact width and hight of your pngs.
Make another comp, use the preset NTSC DV 720x480, make the fps 23.976.

Drop your audio file into the dv comp.

Drop your png comp into the dv comp, make movie Render Settings:
Field Render: Lower Field First
3:2 Pulldown WSSWW
Use this frame rate: 29.97
Output module:
QuickTime Animation compression at 29.97 fps
Check the Audio settings 48.000 KHz 16bit stereo

Import this new mov into DVD Encore to make your dvd.
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Postby patach » Wed Jul 25, 2007 7:45 pm

Thank you for the help Animonger and Greasy. I think I have a bit of a brutal problem here. I am using movieclips with filters and a Flash based camera extension, thus, I am unable to export straight from Flash a png sequence. Thus, I am using swf2video.

However, after using swf2video, the ghosting effect seems to not be apparent. I have just realized that the ghosting effect only becomes apparent after a render from the uncompressed avis to the mov or another put together uncompressed avi. I'm not exactly sure what codec will keep this from happening.

Also, I can't seem to find a “deinterlace” option in the interpret footage, is it called something else?

I'll try to see if swf2video's create image sequence option can solve this mess.

I'm beginning to see that my attempt to avoid the mean ol' AE from Flash animation by the use of an internal camera and effects is causing some inconveniences.
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Postby greasypigstudios » Thu Jul 26, 2007 12:46 am

Yes, it's 3:2 pulldown as animonger had brought up. My bad, hopefully that works out for you!

Arvin
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Postby animonger » Thu Jul 26, 2007 12:53 pm

Just guessing from what you said it seems like a frame rate problem instead of a codec problem.

What is the fps of the avi or mov you are rendering out of swf2video?
What is the fps set to in your comps in your AE project?

If DVD Encore can make a 24fps dvd you don't have to use AE.
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Postby patach » Thu Jul 26, 2007 10:23 pm

According to swf2video, Framerate is 2400/100 I am not sure what that means, does that mean 24 frames per second?

The avis I export from swf2video have absolutely no ghosting in it. It's only when I convert it to something else through Sony Vegas where it shows up. But I set those up to 24 frames too.
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Postby greasypigstudios » Fri Jul 27, 2007 6:33 am

aftereffects should be able to remove those. have you tried it yet?
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Postby patach » Fri Jul 27, 2007 6:51 pm

Hello Greasy,

I have opened up the exported Quicktime file and imported to AE.

I then clicked on "guess pulldown 3:2" and it configured it to 23.97.

Nothing seemed to have changed, when I was slugging through the timeline, though.
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