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640 X 480 am I screwed????

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accpph
640 X 480 am I screwed????
on Jul 8, 2007 at 4:27:18 am

I am trying to make a DVD out of some old animation footage. It is all quicktime uncompressed. It looks fine as a quicktime but after running through DVD studio pro it looks very bad. My cross dissolves dither, my text is terribly anti-aliased, some thinlines flicker badly and I'm getting some weird dithering in a background color's intensity....

Mostly it is at 640 X 480 with Square pixels. I edidted it all together in Final cut pro and exported as an uncompressed quicktime. It looks great as a quicktime. I then took the uncompressed quicktime and imported it as an asset in DVD studio pro. I output it with a min bitrate of 6.0 and a max of 7.0 I use two pass VBR at best settings. It looks terrible.

The uncompressed quicktime is a bit over 3 GB. the mpg 2 compressed files total about 78 MB (not counting sound). How can I save my quality. I know mpg 2 compression is bad, but this is ridiculous.

A friend told me that it looks bad becuase it needs to be at 720 X 480. Is this true? In I use NTSC DV, doesn't that just mean i'm doing 640 X 480 with rectangular pixels??? Any advice anyone could tender would really be appreciated.

ACC



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bouke vahl
Re: 640 X 480 am I screwed????
on Jul 8, 2007 at 12:12:29 pm

Use AE to upscale to 720 x 480 and do a one pass CBR at 7000 (why use VBR ir you have room to spare? Going too high and you will have comaptibility problems on burend discs), and try again.



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accpph
Re: 640 X 480 am I screwed????
on Jul 8, 2007 at 1:56:33 pm

Hi:

1) Thanks for the response. I appreciate the help.
2) I need some clarification.

You Wrote:

Use AE to upscale to 720 x 480
Do I tak ethe 640 X 480 Comp (square pixels)and drop it into a DV NTSC 720 X 480 comp (0.9 pixels)? Won't that stretch it?

OR

Do I drop the 640 X 480 Comp into a 720 X 480 comp with square pixels and then fill the back in with black (sort of a perpendicular equivalent to widescreen bars)?

and do a one pass CBR at 7000 (why use VBR ir you have room to spare? Going too high and you will have comaptibility problems on burend discs), and try again.

I used 7.0 in DVD studio pro. When you write 7000 do you mean take the max bit rate up to 7000? Really can I do that? Or is 7000 and DVDSP 7.0 the same thing and I am not understanding. Isn't 7000 too high?

Thanks for your response.

ACC




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bouke vahl
Re: 640 X 480 am I screwed????
on Jul 9, 2007 at 6:18:09 am

Yes, your video will be stretched, an no, it aint a problem as it will fill the entire frame so all will be well. It's the nature of video.
And 7000 probably is the same as 7.0 in DVD SP...

Just toy with it and see what happens.



Bouke

http://www.videoToolShed.com
smart tools for video pro's


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Tim Ward
Re: 640 X 480 am I screwed????
on Jul 17, 2007 at 10:06:06 pm

Do I tak ethe 640 X 480 Comp (square pixels)and drop it into a DV NTSC 720 X 480 comp (0.9 pixels)? Won't that stretch it?

Yes and no, but it will work out okay. I'd suggest changing your sequence settings in Final Cut to 720x486 D1 Uncompressed, edit, then export.

I used 7.0 in DVD studio pro. When you write 7000 do you mean take the max bit rate up to 7000? Really can I do that? Or is 7000 and DVDSP 7.0 the same thing and I am not understanding. Isn't 7000 too high?

It's 7000 kilobits per second (Kbps), so it's the same as 7.0 Mbps.

do you mean take the max bit rate up to 7000?

With CBR there is no maximum bit rate, just a single bit rate.

tim


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