Quantcast What does CQ Actually do? - digitalFAQ.com Forums [Archives]
  #1  
10-11-2003, 03:33 PM
muhali3 muhali3 is offline
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I know the more the CQ value the better the quality. but i don't really get what it means by quality. what does the cq do to make the picture look better?
does it reduce noise or what?

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  #2  
10-11-2003, 04:21 PM
Dialhot Dialhot is offline
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CQ affects how the encoder chooses the bitrate in the range you tell it to use with MinBitrate and MaxBitrate parameters.

The higher the CQ, the most often it will use a bitrate close to the maximum. Your picture will have a lot less noise, but the file lenth will be a lot bigger (because the average birate of the video will be bigger).
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  #3  
10-11-2003, 06:28 PM
muhali3 muhali3 is offline
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so a higher cq means a higher bitrate. so that's why if you have a low maximum bitrate you can have a higher cq.

so would it be better to use 2-pass VBR, if you didn't care about time?
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  #4  
10-12-2003, 05:34 AM
Dialhot Dialhot is offline
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Experiments have prooved than CQ is better than 2-pass VBR. Bytes are used in a better way.
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  #5  
10-12-2003, 10:46 AM
kwag kwag is offline
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Quote:
Originally Posted by Dialhot
Bytes are used in a better way.
Bits

-kwag
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  #6  
10-12-2003, 02:09 PM
vhelp vhelp is offline
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.
.

IMO, I think that CQ is the greatest mode to use (for TMPG)
Given enough time well spent on it, you can fine-tune your processes w/ it
and routinely use it w/ joy

I can't honestly say I would go back to 2-pass (multi-pass for that matter)
and spend hours (usually double time) to encode something, that a CQ mode
could do in half (and, imo better, given the skills level of the user)
Predition is the only enimey of CQ, however. Its fast becoming a friend (the reverse)

how about adding this "question & answer" to the link below ??

* KVCD Questions and Answers, links to Problems and Solutions..

..just a thought - you could add more fact to it

-vhelp
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  #7  
10-12-2003, 11:37 PM
kwag kwag is offline
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Quote:
Originally Posted by vhelp

how about adding this "question & answer" to the link below ??
Go ahead and add it

-kwag
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