AutoQMatEnc: New free MPEG2 Encoder

[danpos]

@All

Hi, everyone! Abond at kvcd.net announces there a new free MPEG2 encoder. It's very cool we have as much as options (free) possible for to do our encodings ...

Official announcement: Doom9 thread

Home page here


CYA!

EDIT: Hi Danilo, I had to edit your link to the homepage and to the dowload link to this encoder as it is out of date now so I updated it for you.

[Zyphon]

Hi Danilo,

Thanks for the info buddy, this sounds very promising I am excited that we have another Mpeg 2 encoder especially a free one.

I can't wait to check it out and do some testing.

[Prodater64]

As I did read in KVCD.net, it can have problems with control rate as all libavcodec based encoders.
(I only know NuEnc and FreeEnc that fixed that.)

[danpos]

@Pro

I did read the Doom9 thread and the author don't say that he did use a FULLY libavcodec in your code, but something of one. He also did say that ratecontrol is working like a charm and he didn't use the modified libavcodec by Peter Cheat ... The encoder works with a encoder list file (.ecl file) and someone can to do such files using eclCCE.exe by Robot (Doom9 member).

Like I did post above, the Doom9 thread talks about it in more detailed way.

CYA!

[SAPSTAR]

Hi there !

Happy to be registered here !!!

Just a suggestion, you should edit the link to the direct download...it's pointing to the previous release 

danpos...about the bug you reported on Doom9....I'll check that !

[EDIT] About the usage of the libavcodec, I'm using it yes...but only functions of it...I tweaked much the rate control by using the rc_eq (rate control equation) and the rc_override (rate control over ride), I chose to go that way to be able to reuse the next libavcodec without having to rewrite code each time....

[danpos]

@SAPSTAR

Hi, Jérôme!! Nice to meet you!! I hope we can to discuss here too about your very cool app.

I already edited the link for direct download; now It's pointing for correct and updated archive.

@All

I present to you the author of AQE (AutoQMatEnc MPEG2 Free Encoder), SAPSTAR!

CYA!

[Zyphon]

@SAPSTAR

Welcome to the forum and thank you for taking the time to register on our forum.

I was very excited to hear about your encoder when danpos posted about it as soon as I get some time I will do some tests, I have heard some good things about your encoder already.

I respect the work that you have done here and thank you for givng us an extra freeware Mpeg2 encoder.

Good luck with this project of yours, I hope it goes from strength to strength.

[Zyphon]

Could this new encoder be implemented into DIKO as an alternative to CCE seeing as it is freeware.

That is if you had no objections to that Jérôme, it could be a seperate download for DIKO as an option to use DIKO with completely free encoders namely Free3nc and AutoQMatEnc.

I think this is a great seeing as this encoder can be used in DVD-RB also.

Does it allow custom matrices?

What do you think guys?

[danpos]

@SAPSTAR

I'm currently doing a encoding using DVD source, where I enabled the QMatOp built-in technology tweaking the ECL file. I'll report the results as soon as the encoding finish.

I'd want to request you to talk a little bit about the QMatOp technology that you've used in your encoder.

Keep up the good work, buddy!

Cheers,

[danpos]

RESULTS FOR A FULL ENCODING

DVD source: Harry Potter and the Chamber of Secrets (4:3 FULLSCREEN)

Project .d2v generated by DVD2AVI 1.77.3 (by LOLI.J)

ECL file generated by ECLCCE 1.81 (by robot at D9)

In ECL file were configurated:

1 - Built-in QMatOp in encoder enabled putting the "adjust_q_matrix=1" "by hand" in ECL file

2 - Min Bitrate: 300 kbits/s

3 - Max Bitrate: 8000 kbits/s

4 - Average Bitrate: 2876 kbits/s (Calculated through  Calcumatic by Kwag at kvcd.net)

5 - Mode: 2 passes VBR

Q-Mats gererated by AQE (in "0 - zero - pass", through DCTune by NASA):

Code:

8 8 8 8 8 8 8 8
8 8 8 8 8 8 8 8
8 8 8 8 8 8 8 8
8 8 8 8 8 8 8 24
8 8 8 8 8 8 9 24
8 8 8 8 8 10 25 38
8 8 8 8 24 25 41 45
8 8 8 24 26 71 71 71
16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 17
16 16 16 16 16 16 17 17
16 16 16 16 16 17 17 18

Expected video filesize: 3538348 KB (estimated by Calcumatic)

Video filesize generated by AQE in 2 passes VBR    : 3846201 KB

Script .avs used:

Code:

MPEG2Source("D:\Compilation\SCRIPTS\harrypotter_chamberofsecrets.d2v",cpu=4,idct=6)

SCREENSHOTS

A - Video file .m2v generated by AQE

B - Original DVD

(The screenshots were captured with native tool in WinDVD and were compressed im jpg by one itself - I don't do any interference as rezise, compression quality etc)

CYA!

[Zyphon]

Thanks for posting your response danpos, very interesting results.

Btw can you use the BVCD matrix o.k with this encoder?

[Prodater64]

Thanks for posting your response danpos, very interesting results.

Btw can you use the BVCD matrix o.k with this encoder?

This encoder uses in special way best matrix related with stream needs (I think it is variable across a same stream also).
See the matrix posted by Danpos.

[danpos]

@Zyphon

Prodater was perfect in your statement. To enabling the QMatOp feature in ECL file the app will to do a "0 - zero - pass", where the DCTune that follows the app to do an analyze in each GOP at videostream, adjusting the quantization matrix for better compression and quality, constrained to min bitrate, max bitrate and actual bitrate. I guess that final "qmat" is an "average of all qmat", but I'm unsure ...

More informations about DCTune: http://vision.arc.nasa.gov/dctune/

For to use custom "constant qmat" is enough to set it up in ECL file "by hand" or then use the latsilva's app (ECLCreate, which let you to create ECL files for CCE or AQE).

latsilva's tool: http://www32.websamba.com/kanivete/

CYA!

[Zyphon]

@Prodater & danpos

Thank you both very much for the information you have provided.

[SAPSTAR]

Hi there,

AutoQMatEnc 0.24b released

--------------------------------------------------------------------------------

New thread in Doom9:

http://forum.doom9.org/showthread.p...9821#post679821

Thank you for all your support....you gave me the taste to find a way to get rid of those "licensing" issues....

Special thanks to Danpos for his support !