Encoding at different bit-rate that preset says?

Greetings,
I've run into a strange issue where Compressor 2 seems to be encoding at a different bit rate than that which I selected.
I have a 113min video sequence from FCP 5 that I am trying to encode to Mpeg-2 for a DVD5. I originally went in and selected the Best Quality 120min preset. I ended up with a 6.1GB .m2v file. I then went back in and customized a preset which brought the bit rate down to 3.9Mbps and max at 7.0Mbps, 2 pass VBR, best motion estimation. I then ended up with a 5.94GB file. THis was driving me nuts! When I pulled the m2v file up in an inspector window I noticed that it said it was actually encoded at 7.43Mbps not 3.9??
Has anyone seen this issue? This sequence takes 5hrs to encode on my G5 and I need to deliver this project on Wednesday. I'm running out of window's to test it out!
Many thanks!
Regards,
Dave Mungai
G5 Mac OS X (10.4.7) Dual 2.7 GHX PowerPC G5, 3.5GB RAM

never answered. Marking to get off my list

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I have a few 2mins sequences from FCP5.1.4 exported to compressor and choose the preset web download .H264 800Kbps.
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sorry, the above post has some text missing when I copied and pasted...
it should read as follows:-
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File Extension: mov
Estimated file size: *7.42 MB*
Audio Encoder
AAC, Stereo (L R), 48.000 kHz
Video Encoder
Format: QT
Width: 480
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Data Rate: *198.31 kbits/sec*
Duration: 00:01:30:54
Normal Size: 480 x 270 pixels
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Message was edited by: Morgantime

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Mike Boedicker wrote:
Anyone know why different DVD players would display drastically different
bit rates as a DVD is playing?
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Doing an accurate measurement would take so much processing power that
the performance itself would be affected. So it's quite possible that
the numbers you're seeing are somewhat inaccurate.
That said, you seem to be pushing the limits of your test systems,
so maybe you should back off on your Compressor settings.
Check out hanumang's advice and silal's links here:
http://discussions.apple.com/message.jspa?messageID=5157012

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Have you ever wondered about the difference in the sound quality of music at different bit-rates? Can you hear the difference?
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collegeboy wrote:
We all know that wma 28kbps sounds just as good as wma 320kb
ps.
the reason i and you go higher than 28 is because where able to. you can deny all you want.
If you want to experience better sound quality at higher bit-rates, the best thing to do is to listen to the music at a quiet place. This may sound like lame advise, but it really works. Try 320kbps for the best results. You'll be able to hear minor details you never had before.

SSR wrote:
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Encoding at different bit-rate that preset says?

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