Bitrates: Testing CQmatic Versions - Page 2

jorel · #21 07-23-2003, 03:38 PM

Quote:

Originally Posted by Krassi

Version 1.0 beta3:
Same movie as before (23 mins).
Wanted filesize: 188.61 MB
Encoded filesize: 170 MB

We're getting closer

.

krassi please,

how do you got the average this wanted file size with 23 minutes?

i'm trying to got the average for wanted size 286mb with 32 minutes
and don't know how i got the avarage to put in CQMatic.

thanks in advance!

Krassi · #22 07-23-2003, 03:42 PM

Quote:

Originally Posted by jorel

krassi please,

how do you got the average this wanted file size with 23 minutes?

i'm trying to got the average for wanted size 286mb with 32 minutes
and don't know how i got the avarage to put in CQMatic.

thanks in advance!

Hi Jorel,

I'm adjusting "Safety (unused blocks)" in Audio Stream& Authoring. Try this please with a high value (like 9999...). Just a workaround

.
EDIT: Sorry, in Moviestacker for sure.

jorel · #23 07-23-2003, 03:50 PM

what a great hint Krassi,
thank you my friend

jorel · #24 07-23-2003, 05:22 PM

with CQMatic 1.0b3 i did prediction with my sample:
wanted size=290mb(audio and video)
movie time in minutes= 31
Average Bitrate= 1070
final prediction give CQ63,05

now the best:
yesterday i encode this sample using CQ63

final file size

290mb (297.232kb)
after mux audio and video with bbmpeg

seems GREAT

kwag · #25 07-23-2003, 05:26 PM

Great jorel

Get BETA 4, which fixes more stuff. Prediction should be the same as BETA 3, so you should get the same CQ.
www.kvcd.net/cqmatic-1.0b4.exe

kwag

jorel · #26 07-23-2003, 05:34 PM

doing another prediction right now with the new version!

thanks for quality ... CQMatic is growing!

jorel · #27 07-23-2003, 05:50 PM

Quote:

Originally Posted by jorel

with CQMatic 1.0b3 i did prediction with my sample:
wanted size=290mb(audio and video)
movie time in minutes= 31
Average Bitrate= 1070
final prediction give CQ63,05

now the best:
yesterday i encode this sample using CQ63

final file size

290mb (297.232kb)
after mux audio and video with bbmpeg

seems GREAT

i did now the prediction test with the same source
with the new CQMatic 1.0b4...
the result?

CQ63,10

seems wonderful now

jorel · #28 07-23-2003, 06:10 PM

i did the prediction again....same source posted...etc,etc!

got the same CQ63,10 after 5 times with CQMatic 1.0b4

is wonderful

jorel · #29 07-23-2003, 07:46 PM

the last:

using the new CQMatic 1.0b5,
the final prediction is again

CQ63,10

just the same 5 times for 290mb wanted size,31 minutes average 1070
like posted before using the same source!

i don't need to do more tests with small sizes, for me is perfect!

Kwag,
my tests with small sizes are over!

kwag · #30 07-23-2003, 07:58 PM

Thanks jorel

My tests too were correct with small movies. Now on to try long movies

My fingers are itching to flip the switch from "BETA" status to "Release" status

(But I'll wait for further reports from BETA 5 before I do that

)

-kwag

audi2honda · #31 07-23-2003, 09:26 PM

Hey Kwag I'm a little late in the game here, but just finished catching up on all the threads and excitement. I'm giving beta 5 a whirl for the first time here and am going straight to the big movie.

I just followed the guides and set it to encode a 2 hour movie on 1 CD. My computer is super duper fast

so it'll be done in about 2 hours.

I;ll post my results then. Thanks for all the hard work. ToK was flaky on prediction lately with the newer scripts.

kwag · #32 07-23-2003, 09:36 PM

Thanks audi2honda

Waiting for your results

( good, or bad

)

Edit: Did you already do prediction

If so, did the CQ found seems correct for the movie you are doing

-kwag

audi2honda · #33 07-23-2003, 09:57 PM

Quote:

Originally Posted by kwag

Edit: Did you already do prediction

If so, did the CQ found seems correct for the movie you are doing

-kwag

Yup it's done, but I don't quite have enough experience to know if it's right.

The movie is Citizen Kane, 119 minutes with the x3 template at 528x480. 112kb audio and 1 80 minute CD it predicted 56.77...

Sounds about right to me for prediction.
Maybe a little low for good quality, but the movie is black and white and 62 years old, so I figured it might still look pretty good even with a low CQ on one disk.

audi2honda · #34 07-23-2003, 11:44 PM

Well it finished and it was 100MB short

Here are the specs

119 minute Movie at 528x480
112 Audio on 1 80 min CD
CQMatic predicted 56.77
Final Video Size 600MB plus 95MB Audio = 695MB Total

Does CQ Matic produce a Log?

Kwag, what do you suggest I try next???

kwag · #35 07-24-2003, 04:08 AM

Quote:

Originally Posted by audi2honda

Well it finished and it was 100MB short

Here are the specs

119 minute Movie at 528x480
112 Audio on 1 80 min CD
CQMatic predicted 56.77
Final Video Size 600MB plus 95MB Audio = 695MB Total

Does CQ Matic produce a Log?

Not yet. Only the log you see on the screen. What bitrates did you use for MIN and MAX. Did you use MAX=2,500 and MIN=(0.75*AverageBitrate)

Or the regular MIN=300, MAX=2,500

Based on your numbers, was the average you used 806Kbps

-kwag

Krassi · #36 07-24-2003, 04:08 AM

1.0 beta 5 results on the 23 mins clip:

Code:

CQ: 56.18
Wanted video filesize 188.61 MB
Encoded size: 170 MB (same as beta 3).

EDIT: Oh Kwag

, i forgot to assign the lower bitrate value. All my encodes have been with 300-2500... I'll try now with 0,75*1111=833

kwag · #37 07-24-2003, 04:32 AM

Hi Krassi,

If you're using the MA script, use MAX=2000.

-kwag

Krassi · #38 07-24-2003, 04:48 AM

Quote:

Originally Posted by kwag

If you're using the MA script, use MAX=2000.

Thx

Trying it right now.

audi2honda · #39 07-24-2003, 07:39 AM

Quote:

Originally Posted by kwag

Quote:

Originally Posted by audi2honda

Well it finished and it was 100MB short

Here are the specs

119 minute Movie at 528x480
112 Audio on 1 80 min CD
CQMatic predicted 56.77
Final Video Size 600MB plus 95MB Audio = 695MB Total

Does CQ Matic produce a Log?

Not yet. Only the log you see on the screen. What bitrates did you use for MIN and MAX. Did you use MAX=2,500 and MIN=(0.75*AverageBitrate)

Or the regular MIN=300, MAX=2,500

Based on your numbers, was the average you used 806Kbps

-kwag

yea my average was 813. I didn't change the bit rates at all. Opps

audi2honda · #40 07-24-2003, 09:56 PM

Ok Kwag here is my latest test.

CQMatic RC1
119 min movie
112 audio
Avg bitrate 813
In TMPG I set min to 813*.57 and max 2000
Predicted CQ came out to 46.62 for 1 CD at 528x480.

I cancelled the encode because last night i encoded the same movie with ToK using a sample of 72 and .5% prediction and got a CQ of 56.7.

With 56.7 the movie multiplexed came to 784MB, so the 46.62 CQMatic predicted is way to low.

Any ideas on what to try next? Maybe leave max bit rate at 2500?