digitalFAQ.com Forums [Archives] - FFMPEG: Current libavcodec status

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current libavcodec status

Hello,

Been a while since I had some spare time to enter kvcd, but it seems that in the last months libavcodec found it's way in the win32 enviroment too!
This also means that a lot off improvements to the commandline are made, actualy too much too capture them all in one go.
At the moment I'am using:

Code:

acodec=mp2:abitrate=112:vcodec=mpeg1video:

keyint=24:mbd=2:vqblur=0:

vrc_minrate=64:vrc_maxrate=3000:vrc_buf_size=328:

intra_matrix=$matrix:inter_matrix=$inter_matrix

Wich gives me nice overall quality and about 120mins. on a 700Mb. cdr.
There's one problem doo, with high-action scenes the picture gets very blocky.
Can somebody help me out with this?
Second: Has somebody allready written "templates" for mencoder? (like the tmpg-ones)

Hi japie,
if you have read some of my last posts, you'll see I've been trying to make 1CD encodings, but in mpeg2 with mencoder. But in some scene changes, and in fast action or with several little objects moving, I get lots of blocks. I'm trying to improve it, but still didn't find the way. Bilu also is working in the same direction, with low bitrates, and gets nice results with a denoiser and his command-line.
About your tests with mencoder and mpeg1: did you a visual comparison against a TMPGEnc encoded film?. Not just in those blocky scenes, but in the rest of the film.
And about templates, we're making use of settings.ini files, where we set our basic settings, and then in the command-line we introduce does settings we're tweaking. We make mencoder read this file through the -include funtion.
... nice to see another guy willing to play with us this game :wink:

Hi japie,

Templates, in all honesty, is just what you wrote. But, here is my advice (and
ideas to some :roll: and :wink: ) is that you usilitize configuration files - I call them OCF
scripts - - Option Configuration File.

You can see them on my thread here:

* MEncoder under W98 / SE / ME - (work in progress) ..

Look on first page. This is specially for Windows 98/SE/ME users, but really,
ALL OS users can use this, and it what I would recommend for ALL users to
use from now on, to capture the "flavor" of (shall I say.. ) TMPG templatges :lol:

I'm incorporating this as a feature myself :wink:

So, if you wanted to use your param string setup and label it or describe
it as your "kvcd" as a template, import that param string, into an OCF file
(again, see my link above) and (or use .INI as your file - whatever works
for you :lol: ) and then name that file something like (some examples below) :

* kvcd.fair.qlty.ocf

Quote:

acodec=mp2:abitrate=112:vcodec=mpeg1video:
keyint=24:mbd=2:vqblur=0:
vrc_minrate=64:vrc_maxrate=3000:vrc_buf_size=328:
intra_matrix=$matrix:inter_matrix=$inter_matrix

* kdvd.better.qlty.ocf

Quote:

acodec=mp2:abitrate=112:vcodec=mpeg2video:
keyint=18:mbd=1:vqblur=1:
vrc_minrate=300:vrc_maxrate=4000:vrc_buf_size=1863 :
intra_matrix=$matrix:inter_matrix=$inter_matrix

And, in your main .BAT script file, you could call it up like this:

Quote:

h:\mencoder\mencoder.exe -include h:\mencoder\kvcd.fair.qlty.ocf H:\mencoder\myfilename.avi

If you know DOS .BAT file scripting programing, you can do all sort of other
neet and fancy stuff, or if you're a programer/devl'er, you could conjor up
an nice GUI app of your own and incorporate such features etc.

Cheers,
-vhelp

Quote:

Originally Posted by digitall.doc

Bilu also is working in the same direction, with low bitrates, and gets nice results with a denoiser and his command-line.

Can you point me out to the right treath, Ican't find it 8O

Quote:

Originally Posted by digitall.doc

About your tests with mencoder and mpeg1: did you a visual comparison against a TMPGEnc encoded film?.

Mencoder has a lot bether picture than tmpgenc, on the other hand mpeg2enc is even bether than mencoder but it has the same speed then tmpgenc, if you have a *nix system you can try it, a nice script is at http://kvcd4nix.sf.net

Quote:

Originally Posted by digitall.doc

... nice to see another guy willing to play with us this game :wink:

Actualy, I was the first to create kvcd with mencoder :D

Quote:

Originally Posted by vhelp

I don't know any DOS .BAT file scripting but can find my way with bash :wink:

Quote:

Originally Posted by japie

Quote:

Originally Posted by digitall.doc

Bilu also is working in the same direction, with low bitrates, and gets nice results with a denoiser and his command-line.

Can you point me out to the right treath, Ican't find it 8O

http://www.kvcd.net/forum/viewtopic.php?t=9074

Bilu

thanks for the link, I tryed a lot of settings, but the main issue of killing the "big blocks" is setting the vbitrate wich I didn't use.