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  #1  
03-27-2003, 02:25 PM
Reno Reno is offline
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CQ 75

Dude, is it just me, or does that CQ look better than anything else? When I do file prediction, I don't jack CQ up, I turn up min bitrate, and my encodes are astounding!! Excerpts follow....

"Dude, there is NO WAY that is vcd!! NO WAY."

"Hey, wipe your drool off my coffee table, please. And close your mouth."
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03-27-2003, 02:40 PM
CheronAph CheronAph is offline
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What template do you use?
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03-27-2003, 02:41 PM
heller heller is offline
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What resolution are you encoding at? Are you using KVCDx3?

I find that when I encode at 544x480 that there's definitely an improvement from cq75-->cq90, but that's with leaving the min bitrate 300 and max 2500. I've never tried just raising the bitrate and leaving cq at 75...
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03-27-2003, 03:09 PM
Reno Reno is offline
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I'm using X3.

I'm encoding 'Major League' right now (min bitrate is 1300), and all I can say is DAMN!!

P.S. Cheronaph, that avatar is frikkin' scary!! Nice work!!
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03-27-2003, 03:17 PM
CheronAph CheronAph is offline
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Quote:
Originally Posted by Reno
P.S. Cheronaph, that avatar is frikkin' scary!! Nice work!!
Thanks!
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03-27-2003, 04:40 PM
rendalunit rendalunit is offline
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I think the magic number is 85. There should be a big increase with 85 compared to 75 with bitrate viewer. There's not much change though from 85 to 100. **only based on my own experiences though

btw Cheronaph your avatar is pretty damn scary! <me likey>
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03-27-2003, 05:22 PM
Bytecode Bytecode is offline
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Maybe I'm wrong, but I thought the way vbr worked is that... you use the maximum bits you need up to the max bit rate. The only time the Min bitrate came into effect is when you didn't need very many bits to encode the picture, it would fill the rest with blank space so that the dvd player could handle it. So a logo or title screen may only need 300 bits/s to run but an action scene require 90% of the screen to change between scenes may require 3000 bit/s to display. And with that, the only diff between CQ and VBR is that CQ tries to average the quality of the video within your VBR settings to give you 80% of what you would get if you just did the regular VBR method. ie: 80% as good. It would be interesting to see the code for CQ in tmpegenc or at least a synopsis for how it works.

This is interesting though, it could be that the CQ algorithm does something with the min/max bitrates * cq rate or something that would increase the quality of the video when you up the min bitrate. This is very interesting though. I'll have to try it. I know that 85+CQ with 2200-2500kbs max looks very very good on my tv. I usually leave the min bitrate at 300 or 500.

I'll give it a try on my next encode and see if it makes a diff for my player. Thanks!

-BC
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03-27-2003, 10:52 PM
jorel jorel is offline
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Quote:
Originally Posted by CheronAph
What template do you use?

"...is frikkin' scary avatar " and
yes,really cool just i post..(don't remember where was..)
seems " it " film from Stephen King!

@ all friends: read please.....

http://www.kvcd.net/forum/viewtopic....b8d9b3b480c7d1

i encode using the prediction
352x480 (give more CQ )
and
480x480 (give less CQ )
with the same script only changing the size....

for me, 480x480 is better, more sharp,really better in
Sarah Brightman - La Luna (low action)!

and the magic number is.......

(mixed emotions)
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03-28-2003, 02:29 AM
Reno Reno is offline
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Everybody has their own CQ flavor

Different strokes, I guess.

What we're doing is always left to the eye of the beholder, right? What I've seen using CQ 75 is a LOT less noise on stationary, flat surfaces. That always drove me crazy...
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