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- - FFMPEG vs FFVFW vs Mencoder ? (http://www.digitalfaq.com/archives/encode/8159-ffmpeg-vs-ffvfw.html)

Thank you for your help! Now - FINALLY - I'm able to use Mencoder! :D
On the downside I'm not really impressed with the quality I got from the intro scene from the Abyss :cry: . I'll look into the tweaking parameters to see if I'll get better results...

Hmmm, I'm getting a buffer underflow message the line before the encoding start. What can be causing this :?:

Quote:

Originally Posted by audioslave

Hmmm, I'm getting a buffer underflow message the line before the encoding start. What can be causing this :?:

We all get that message at the beginning, it means that the buffer isn't full yet :wink:

Bilu

:imstupid:
Alrighty then! :D
Any idea on why the encoded video look so bad? The frames look almost as if I have encoded an interlaced source without a deinterlacing filter - which I haven't :roll: .

EDIT:
Maybe you wanna see some screenshots, to better understand what I'm talking about :?:

What was your command-line?

Try lmin=1 and no scplx_mask for the greatest quality.

Bilu

@Digi.Doc

Did you CHECK your stream in Bitrateviewer???
When setting lmin the Q curve sometimes plays crazy! Means sometimes it rises with bitrate (as wanted) and still keeps that high Q like constant! for about a minute (but no needing to keep that for a minute) even if already no compelx scenes/very low bitrate do happen!. 8O

That risky bitrate rise (now 12000kbit) scene in "K19" is a scene where a man jumps over from the submarine into the ocean = complex water rumble scene! A hell!

@bilu
8O WOW 8O Amazing quality!!! But (here we go again :roll: ) now I noticed the colors seems washed out. Once again the intro scene from the Abyss: The first cut to the interior of the submarine where the room is lit up by red lights - they aren't so red anymore. Look much more orange to me :!: Any tweaks for that?

@audioslave

Try removing the intra_matrix and inter_matrix settings.

Bilu

@bilu
That would be the Notch matrix, right?

Damn, this encoder is faaaast :!: I'm getting between 25-30 fps encoding speed on my AMD 2000+ :!:

@bilu
Removing the matrix didn't help with the color issues :cry: .

No difference. Wierd! :?

I just ran my encoded video stream through ReStream and couldn't find any B-frames 8O :!: This surely can't be right, can it?

@bilu
Testing your latest tip right now... :wink:

add vmax_b_frames=2.

:lol:
You poor thing. Helping an idiot like me all night long :wink: . Don't get me wrong, I'm sooo grateful :!: :D

EDIT:
I really think this color problem is an important thing to solve as fast as possible so we don't get these washed out looking movies. Don't you agree?

@Incredible

Quote:

of=rawvideo=1
ovc=lavc=1
nosound=1
noskip=1
vf=yuvcsp
lavcopts=vcodec=mpeg2video:vrc_buf_size=1835:preme =2:precmp=2:ildct=1
:ilme=1:vstrict=-1:autoaspect=1:vqblur=0:vrc_minrate=300:vbitrate=3 000
:vrc_maxrate=9800:vrc_eq=avgTex:vqmin=1:mbqmin=1:l min=2.49

#Inc
#:intra_matrix=8,13,18,23,28,33,38,43,13,18,23,28, 33,38,43,48,18,23,28,33,38,
43,48,53,23,28,33,38,43,48,53,58,28,33,38,43,48,53 ,58,63,33,38,43,48,53,58,63,
68,38,43,48,53,58,63,68,73,43,48,53,58,63,68,73,79 :inter_matrix=16,18,20,22,24,
26,28,30,18,20,22,24,26,28,30,32,20,22,24,26,28,30 ,32,34,22,24,26,28,30,32,34,
36,24,26,28,30,32,34,36,38,26,28,30,32,34,36,38,40 ,28,30,32,34,36,38,40,42,30,
32,34,36,38,40,42,44

#Notch
#:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27 ,29,34,37,12,14,18,27,29,34,37,
38,22,26,27,31,36,37,38,40,26,27,29,36,39,38,40,48 ,27,29,34,37,38,40,48,58,29,34,
37,38,40,48,58,69,34,37,38,40,48,58,69,79:inter_ma trix=16,18,20,22,24,26,28,30,18,
20,22,24,26,28,30,32,20,22,24,26,28,30,32,34,22,24 ,26,30,32,32,34,36,24,26,28,32,
34,34,36,38,26,28,30,32,34,36,38,40,28,30,32,34,36 ,38,42,42,30,32,34,36,38,40,42,44

Tried your matrix in comparison with Notch.

Inc
===
3815 KB
avg 875/2.30
peak 2639/3.68

Notch
====
4005 KB
avg 919/2.32
peak 2682/3.68

In BV they looked almost equal.
Looking at it I like Notch a bit more, more natual it seems.
But very difficult to distinguish between the two.

Bilu

Quote:

Originally Posted by audioslave

I really think this color problem is an important thing to solve as fast as possible so we don't get these washed out looking movies. Don't you agree?

Not right now, I still have other priorities. Others can walk this path ;)

Bilu

My own compile, this one solves the B-frames issue.

http://clientes.netvisao.pt/bilu/bru...er20040405.zip

The last mplayerhq.hu compile was March 26th after all :roll:

Bilu

Quote:

Originally Posted by incredible

Inc, I did check my streams in BitrateViewer, this is the way I take my bitrate/Q values. And didn't notice the behaviour you refer, in my tests Q raises and falls fast, and if keeps constant (it really doesn't keep much constant, but when I used vqmin=2:lmin=1) it's at a low value.
And I tested mencoder with several bitrate-demanding scenes, and never get a too high bitrate (max about 10000 when used vqmin=1:lmin=0.5, but never again). Ahain, don't know if it's a matter of different mencoder compilation/version, or that I use vbitrate=9800 (differnet settings, I mean).
bilu, in your last test, when testing inc matrix (I still didn't :oops: , sorry inc), I see you get nice quantizers (avg about 2.3 is not that bad) but really low avg bitrate: is it related to the source you used, or to your settings?. Did you compare this same slice with vrc_eq=tex vs avgTex?. I don't know if this same sample couldn't be encoded at lower quantizers and higher bitrate (that would mean of course bigger file size)... I can't forget we are encoding KDVD and we can use higher bitrates... Because we're encoding/talking about KDVD, don't we?
I find your results with inc matrix interesting, maybe he can tweak it more. And as I posted in the other thread, I'll also test vrc_eq=avgTex and see how it goes.
Cheers :wink: