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-   -   Mencoder: MencoderMe mpeg1 quality results. (http://www.digitalfaq.com/archives/encode/9471-mencoder-mencoderme-mpeg1.html)

Prodater64 05-05-2004 11:38 AM

MencoderMe mpeg1 quality results.
 
I was encode already several movies with MencodeMe and I can see that:

(Avisynth + TMPGEnc + mpeg1 + 1Pass encoding) better than (Avisynth + MencodeMe + mpeg1 + 2Pass encoding)

Despite that, I still prefer MencodeMe, I forget any thing about file size prediction, and it is quicker than TMPGEnc. But for purists in the matter...
I think that suffer same quality loss, in mpeg1, than ffvfw with libavcodec.

kwag 05-05-2004 12:00 PM

Hi Prodater64,

If you try (AviSynth + MencodeMe + mpeg-2 + ( 1 or 2 Pass encoding)), you'll find out that mencoder's MPEG-2 is better that TMPEG's MPEG-1 :!:
So right now, quality wise, mencoder (libavcodec) is the best, even better than TMPEG's MPEG-1, for low bitrates too.

-kwag

black prince 05-05-2004 01:44 PM

Kwag wrote:
Quote:

Hi Prodater64,

If you try (AviSynth + MencodeMe + mpeg-2 + ( 1 or 2 Pass encoding)), you'll find out that mencoder's MPEG-2 is better that TMPEG's MPEG-1
So right now, quality wise, mencoder (libavcodec) is the best, even better than TMPEG's MPEG-1, for low bitrates too.

-kwag
I haven't even gotten MEncoderME to produce a working mpeg-1 with
or without avisynth, 1 or 2 pass, etc. I don't believe it can :roll: If we
compare mpeg-1 with MEncoder vs Tmpgenc that couldn't be true 8O
If MEncoder can take mpeg-2 and compress a movie that uses the same
file size as low bitrate mpeg-1, than that is an amazing thing. But no one
has claimed this and even suggested that it can.


Prodater64 wrote:
Quote:

Prodater64 Posted: Wed May 05, 2004 12:38 pm Post subject: MencoderMe mpeg1 quality results.

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

I was encode already several movies with MencodeMe and I can see that:

(Avisynth + TMPGEnc + mpeg1 + 1Pass encoding) better than (Avisynth + MencodeMe + mpeg1 + 2Pass encoding)

Despite that, I still prefer MencodeMe, I forget any thing about file size prediction, and it is quicker than TMPGEnc. But for purists in the matter...
I think that suffer same quality loss, in mpeg1, than ffvfw with libavcodec.
I agree :) I you are comparing, mpeg-1, Tmpgenc is still the
winner :wink: I've always gotten better picture quality with mpeg-2,
but file size and stand alone player compatibility are issues.

-BP

kwag 05-05-2004 02:03 PM

Quote:

Originally Posted by black prince
If MEncoder can take mpeg-2 and compress a movie that uses the same
file size as low bitrate mpeg-1, than that is an amazing thing. But no one
has claimed this and even suggested that it can.

But I already did 8O

Look:
http://www.kvcd.net/payback.mpeg2.mpg.cut.37.mpg

And yesterday:
http://www.kvcd.net/shell.mpg.cut.18.mpg

Full movie at 704x480 on one CD-R, encoded with MencodeME, MPEG-2, using "DVD" filter combo, muxed and burned as SVCD.

-kwag

Prodater64 05-05-2004 02:05 PM

Quote:

Originally Posted by kwag
Hi Prodater64,
If you try (AviSynth + MencodeMe + mpeg-2 + ( 1 or 2 Pass encoding)), you'll find out that mencoder's MPEG-2 is better that TMPEG's MPEG-1 :!:

I already know this.



Quote:

Originally Posted by kwag
So right now, quality wise, mencoder (libavcodec) is the best, even better than TMPEG's MPEG-1, for low bitrates too.

I don't knew this.
Does it mean that I must to use (quality wise) "AviSynth + MencodeMe + mpeg2", even for low bitrates?

kwag 05-05-2004 02:35 PM

Quote:

Originally Posted by Prodater64
Does it mean that I must to use (quality wise) "AviSynth + MencodeMe + mpeg2", even for low bitrates?

Just make a quick test, without any filters.
Try TMPEG MPEG-1 and Mencoder MPEG-2 on low bitrates, targeting same file size.
You'll see mencoder's MPEG-2 is better than TMPEG's MPEG-1.
So when you add filters, either AviSynth or mencoder's internal filters, you'll get even better results.

-kwag

Prodater64 05-05-2004 03:03 PM

Quote:

Originally Posted by kwag
Just make a quick test, without any filters.
Try TMPEG MPEG-1 and Mencoder MPEG-2 on low bitrates, targeting same file size.
-kwag

I don't know how make it.
1 - Run a sample with tmpgenc cq 100 mpeg1.

2 - How can I calculate same file size with mencodeme (maybe with calcumatic, I give it a file size and it give me a bitrate, or in mencodeme I can select file size too?)

3 - Run a sample with mencodeme and compare.

sertinell 05-05-2004 03:25 PM

hello
Quote:

2 - How can I calculate same file size with mencodeme (maybe with calcumatic, I give it a file size and it give me a bitrate, or in mencodeme I can select file size too?)
You only have to calculate the average bitrate for mencoder. If you don't know:

Quote:

FILESIZE*1024*8/seconds
Filesize in MB

bigggt 05-05-2004 06:52 PM

Quote:

Originally Posted by Kwag
Full movie at 704x480 on one CD-R, encoded with MencodeME, MPEG-2, using "DVD" filter combo, muxed and burned as SVCD

Sorry to be a dumb a*s but If i want to put a movie on 1 cdr but use your method what do i have to chage,can i use 528x480.

What do i do

1.Use ma script through makeavis
2.Select dvd filtering combo
3.1 cd KSVCD
4.What bitrate -the average from cq matic
5.Do i need to change max bitrate

I also haven't had the best luck using mpeg1 with mencoder and tmpge has been far better for me so i would like to try this method but don't know where to start.

Thanx

vmesquita 05-05-2004 06:58 PM

@bigggt

When using a fake avi generated by Avisynth, use only the "no filtering" combo and the MakeAVIIS profile, any other will resize the video and you already done that in the script.

kwag 05-05-2004 06:58 PM

Quote:

Originally Posted by bigggt

Sorry to be a dumb a*s

Only if you didn't ask :lol:
Quote:

but If i want to put a movie on 1 cdr but use your method what do i have to chage,can i use 528x480.
yes
Quote:


What do i do

1.Use ma script through makeavis
You can do that.
Quote:

2.Select dvd filtering combo
Yes. If you selected some filters in AviSynth, then select "No Filter" as filter combo.
Quote:

3.1 cd KSVCD
Yep.
Quote:

4.What bitrate -the average from cq matic
Exactly :!:
Quote:

5.Do i need to change max bitrate
It's already set to 2,500 by MencoderME :)
Quote:


I also haven't had the best luck using mpeg1 with mencoder and tmpge has been far better for me so i would like to try this method but don't know where to start.

Thanx
If your player supports SVCD, you'll be fine when you encode with the KSVCD setting in MencoderME :cool:

-kwag

kwag 05-05-2004 07:00 PM

:mrgreen:

bigggt 05-05-2004 07:13 PM

Thanx guys

Quote:

Originally Posted by VM
When using a fake avi generated by Avisynth, use only the "no filtering" combo and the MakeAVIIS profile, any other will resize the video and you already done that in the script.

AFter reading your post all i can do is shake my head at myself I need a good :cluebat: once in a while,i don't know how many times i have read this in the past :oops:

Anyway i guess that brings up my next question if using mpeg2 to fit on 1 cd are you getting better results with the dvd filter combo(mencoders filters) or through using the ma script with fake avi

kwag 05-05-2004 07:17 PM

Quote:

Originally Posted by bigggt
Anyway i guess that brings up my next question if using mpeg2 to fit on 1 cd are you getting better results with the dvd filter combo(mencoders filters) or through using the ma script with fake avi

If your movie is an action movie, you'll get better results using the MA script, making a .avs script, and using MakeAVIs.
It it's a low action movie, or a movie that doesn't contain many fast action scenes, then use Mencoder's internal filters, because encoding speed will be FAR faster than using any AviSYnth script combination.

-kwag

bigggt 05-05-2004 07:32 PM

Thanx Karl :D

black prince 05-05-2004 11:59 PM

@Kwag,

Wow kwag 8O I didn't know that. I have several movies I'll try
right now. Most KSVCD's work great on my stand-alone-player.
This is getting exciting :D I 've got to think more outside the box :roll:

-BP

Jellygoose 05-06-2004 06:20 AM

So if you encode at an Ultra-Low-Bitrate in MPEG-2 with 352x288 VCD resolution... Would you mux the file as VCD or SVCD? :roll:

bigggt 05-06-2004 07:35 PM

I tried making a test with SKVCD and have a few more questions.

Do i need to use pulldown

2.I loaded the mpv file into avicodec and it says its mpeg1 ,shouldn't it be mpeg2

Thanx

bigggt 05-07-2004 07:12 PM

Ok thought i would post my first results

avi filter 1 cd kscvd ,i had a lot of errors in the log something like duplicate frames or something(frogot to copy it) but when i muxed it seems to be pretty good.

Anyway the video is quite good but not as good as tmpge(at least so far)

I am going to try a dvd now and see

BTW i did a 2 pass which took about 5 hours which in tmpge this movie took me 10 hours.

digitall.doc 05-08-2004 12:28 PM

Quote:

Originally Posted by bigggt
...avi filter 1 cd kscvd ,i had a lot of errors in the log something like duplicate frames or something(frogot to copy it)...

I don't remember having an error like this... does it also say something about DCT coefficient?, I guess no, this is another kind of error.
Remember, if DCT coefficients error, that you can try raising VBV value.


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