Quantcast Bitrates: TMPGEnc and CQmatic, CQ Very Low? - digitalFAQ.com Forums [Archives]
  #1  
06-29-2004, 09:42 AM
Fluffbutt Fluffbutt is offline
Free Member
 
Join Date: Apr 2004
Posts: 189
Thanks: 0
Thanked 0 Times in 0 Posts
Just a quick question... Using tmpgenc (TMpgEnc Plus 2.5.21.58.169) and CqMatic 1301.

It all works perfectly, I got a 690 Mb m1v and a 70 odd Mb mp2, musex them to make a sub 800Mb kvcd, ok.

My question is: During all the work, cqmatic came up with a cq of 20.56. That's for d2v from good dvd source. Tmpg res ws 352x x288 vcd size.

So how come you guys have shown logs of >60 for cq with bigger size res (480 x ?? was one (the ?? is wher I forget the numbers )

Interestingly enough, the kvcd looks very nice, very few blocks, etc.

Just that wierdo low cq gets me wondering.
__________________
|
Meeow!
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Site Staff / Ad Manager
 
Join Date: Dec 2002
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
06-29-2004, 10:34 AM
Dialhot Dialhot is offline
Free Member
 
Join Date: May 2003
Posts: 10,463
Thanks: 0
Thanked 0 Times in 0 Posts
It is definitely NOT possible to find a source encoded in CQ < 50 watchable

Don't you use CQ_VBR ?
Reply With Quote
  #3  
06-29-2004, 12:17 PM
Fluffbutt Fluffbutt is offline
Free Member
 
Join Date: Apr 2004
Posts: 189
Thanks: 0
Thanked 0 Times in 0 Posts
Hang on, I'll check (this is my first full Tmpg kvcd)...

Yep. So 20 odd is normal for cq_vbr? (minrate was 200, max was 1850). Whew!

Just out of interest, why is cq_vbr so low, and plain cq high?

Thanks, Dialhot!
__________________
|
Meeow!
Reply With Quote
  #4  
06-29-2004, 12:29 PM
Dialhot Dialhot is offline
Free Member
 
Join Date: May 2003
Posts: 10,463
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Fluffbutt
So 20 odd is normal for cq_vbr? (minrate was 200, max was 1850). Whew!
Yes it is. The scale is not the same :

CQ=70 -> CQ_VBR=18/20
CQ=75 -> CQ_VBR=20/22
CQ=80 -> CQ_VBR= 23/25
...

Quote:
Just out of interest, why is cq_vbr so low, and plain cq high?
Ask to the developpers
Reply With Quote
  #5  
06-29-2004, 10:18 PM
Fluffbutt Fluffbutt is offline
Free Member
 
Join Date: Apr 2004
Posts: 189
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks, Dialhot. Excellent info there!

<Fluffbutt purrrs are winging their way to you!!>
__________________
|
Meeow!
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Bitrates: Still getting oversized files with cqmatic in tmpg 2.524x The Untouchable Video Encoding and Conversion 51 07-23-2006 06:56 AM
From tmpg to cce, cqmatic has option for cce but is unselectable? The Untouchable Video Encoding and Conversion 2 01-23-2004 05:07 PM
Bitrates: CQMatic & TOK serrabastien Video Encoding and Conversion 9 09-08-2003 08:09 PM
Bitrates: KDVD bitrates with CQMatic nicksteel Video Encoding and Conversion 10 08-06-2003 08:44 AM
Bitrates: TOK vs CQMatic Bud Video Encoding and Conversion 4 08-04-2003 02:30 AM

Thread Tools



 
All times are GMT -5. The time now is 11:20 PM  —  vBulletin © Jelsoft Enterprises Ltd