Two very different results using the same settings (H.264 / Quicktime Pro)

I’m a bit confused, I have used Quicktime Pro (v7.1) to encode DV into H.264 for iPod and this particular video is 18 minutes long and came out looking very good with the following settings;
VIDEO: H.264 at 200kbps, Baseline Profile, 25fps, Auto Key Frames, 320x240 or 640x480, Multipass Best quality encoding.
AUDIO: AAC Audio at 96kbps, 24kHz sampling freq, Stereo.
However here is the twist…
When I use the same exact settings to encode just the 30 second opener (from the 18 minute video) the encoded opener looks bad and blocky!
Why? Same settings would make you assume that you should get a same or similar result, or am I wrong?
The reason I have tried encoding this 30 second opener is that I am trying to work out which settings work best on the iPod (another issue) and I don’t want to spend hours test encoding the full 18 minute video, as you know H.264 is SLOW to encode!
So can anyone help in regard to two very different results using the same settings?
Regards,
J
PC Windows XP

Alvin,
Is it a commercially-released or home-burned CD?
If it's commercially-released, try "encouraging" the recalcitrant computer by using the iTunes Advanced menu > Get CD Track Names command when it shows Audio CD.
If it's home-burned, you will find that only the computer that actually burned the disc will know what's on it. The information won't be transferred to another computer.
Let us know which, if either, of these situations applies to you.

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How can this happen when I am using the same array values?
Attached is an image of what I am explaining.
Solved!
Go to Solution.
Attachments:
polynomial_evaluation.jpg ‏213 KB

Hi Altran,
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Did you compare them? Did you (atleast) set the display properties to 17 significant digits?
Please attach a VI instead of a picture...
Best regards,
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Kudos are welcome

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rem ----------------
rem Filename: cer.sql
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rem ---------------
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exception
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Message was edited by: Hen3ry to clean up the table a little and add a parenthetical explanation.

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You make a good point Stefan but unfortunately I already checked that. I have even copied the mapping (right click copy) and pasted it from the working Mapping to the bad Map (Paste) to make sure the context values were all the same.
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Edited by: Matthew Herbert on May 29, 2010 12:09 AM

You make a good point Stefan but unfortunately I already checked that. I have even copied the mapping (right click copy) and pasted it from the working Mapping to the bad Map (Paste) to make sure the context values were all the same.
I also opened all the queues and compared the values in each. All values match exactly except for the result(out) queue.
In both tests I am using the same IDOC XML file.
These are the only differences I see.
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A better sample of the result queues look like this:
Correct Result:
Thickness of Glass: 20
Height: 10
Width: 5
Length: 18
Thickness of Glass: 10
Height: 15
Width: 8
Length: 14
Bad Result:
Thickness of Glass: 20
<null>
<null>
<null>
Width: 5
<null>
<null>
<null>
I took this chance to redesign my Variant Config output to separate the characteristics/values, but I'm still bothered that I was unable to determine what would cause the differing values.
Any ideas?
Thanks,
Matt

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