FFmpeg: Lastest Build - FFvfw-20041301.exe - Page 6

vhelp · #**101** 02-26-2004, 05:13 PM

Sorry rds,

doom9 gave me a "do not LEECH" warning message, and won't let met D/L

I don't get it though

-vhelp

bilu · #**102** 02-26-2004, 05:14 PM

Just to see if I got things right:

You're saying that Mencoder is creating an MPG header instead of an M2V header even when using the -nosound parameter.
Headers are not like M2V and so you can't use it.

My noob question:

What can't you do with the stream with the header produced by Mencoder?

From the man page:

Quote:

-of <format> (BETA CODE!)
Encode to the specified format. Use -of help to get a list of available formats.
EXAMPLE:
-of avi encode to avi (default)
-of mpeg encode to mpeg

From the mencoder -of help output:

Quote:

Available output formats:
avi - Microsoft Audio/Video Interleaved
mpeg - MPEG-1 system stream format

Bilu

Hydeus · #**103** 02-26-2004, 05:18 PM

It is not m2v file with mpeg header, but MPEG file =m2v video + audio (AFAIK empty or fake, or even without audio; probably last type). You have to demux this type of stream.

bilu · #**104** 02-26-2004, 05:21 PM

Quote:

Originally Posted by Hydeus

You have to demux this type of stream.

Why? What process needs it demuxed? Can't you just select video from a stream for that process?

Sorry, I'm in early stages

Bilu

Hydeus · #**105** 02-26-2004, 05:23 PM

After encoding with MEncoder you get MPEG file (m2v+no audio), but it is still mpeg file. For mux (bbmux) with your prefered audio (zB. MP2 from BeSweet), you need pure m2v video stream. Ok?

rds_correia · #**106** 02-26-2004, 05:24 PM

Quote:

Originally Posted by bilu

Available output formats:
avi - Microsoft Audio/Video Interleaved
mpeg - MPEG-1 system stream format

Bilu[/quote]

Hi bilu,
I believe system stream format is different than elementary stream format.
We all want it to output elementary instead of system.
Notice it's called mpeg instead of m2v.
Hopefully I'm posting it accuratly.
Cheers

rds_correia · #**107** 02-26-2004, 05:27 PM

Quote:

Originally Posted by bilu

Quote:

Originally Posted by Hydeus

You have to demux this type of stream.

Why? What process needs it demuxed? Can't you just select video from a stream for that process?

Sorry, I'm in early stages

Bilu

Duuude,
You're only noob if I'm a super noob

But still you can't mux an already muxed stream.
An mpeg stream has already been muxed opposed to an m2v.
We need an m2v to mux the audio in the end since we're not doing audio with mencoder.
That's why.
Cheers

vhelp · #**108** 02-26-2004, 05:28 PM

@ Hydeus,

That was my thinking and assumption too, when talking w/ kvcd previously,
when we were debugging the patcher tool. That it was not an "single" stream
but rather a mixed (but kaka) stream, and that it might be an faulted audio
stream that got left behind (what's left of the code snip) in mencoder's final
U/L to us all. Maybe this developer (a nice guy) probably didn't finish w/
guttin out the bad code or something

The reason I concluded w/ this analigy was because we are able to de-MUX

the source

That, to me, means that TWO streams are at play here. And, when you bring
in the .m2v (or whatever you guys/gals calls it) in TMPG, it leaves a blank
[ ] padd_stream in our mists

-vhelp

rds_correia · #**109** 02-26-2004, 05:30 PM

Quote:

Originally Posted by vhelp

Sorry rds,

doom9 gave me a "do not LEECH" warning message, and won't let met D/L

I don't get it though

-vhelp

Sorry,
I forgot doom9 doesn't accept it...
Just use www.doom9.org. Push the download button on the left pan.
Scroll down to the vob tools.
There it is in the 1st place or else hit "show all vob tools" if you still can't see it.
Cheers

rds_correia · #**110** 02-26-2004, 05:34 PM

Quote:

Originally Posted by vhelp

@ Hydeus,

That was my thinking and assumption too, when talking w/ kvcd previously,
when we were debugging the patcher tool. That it was not an "single" stream
but rather a mixed (but kaka) stream, and that it might be an faulted audio
stream that got left behind (what's left of the code snip) in mencoder's final
U/L to us all. Maybe this developer (a nice guy) probably didn't finish w/
guttin out the bad code or something

The reason I concluded w/ this analigy was because we are able to de-MUX

the source

That, to me, means that TWO streams are at play here. And, when you bring
in the .m2v (or whatever you guys/gals calls it) in TMPG, it leaves a blank
[ ] padd_stream in our mists

-vhelp

Hi vhelp,
I don't know if I understood you right but you must remember that ffvfw was doing the same thing when we were using output as MPEG1 instead of Raw file.
So maybe it's a libavcodec thing and not just a slack of code that they didn't finish.
I wish mencoder would have raw file mode so we could forget about demuxing it...
Cheers

bilu · #**111** 02-26-2004, 05:36 PM

Quote:

Originally Posted by incredible

I agree with Vmesquita (and I got no probs with the right VBV Buffer sizes afterwards).

According to the TmpgEnc demux workout ....

You easely can add to the commandline a "demux&safe the elementary m2v & delete the first output mpg" at the end so everything goes automatically! Thats also what I like on that commandline workouts.

Code:

...... "G:\TRUMAN_SHOW\truman.avi" -o "G:\TRUMAN_SHOW\truman.MPG"
bbdmux "G:\TRUMAN_SHOW\truman.MPG" 0xe0 "G:\TRUMAN_SHOW\truman2.m2v"
del "G:\TRUMAN_SHOW\truman.MPG"

By this after the process you get the right m2v elementary stream on your hd ... but bbdemux has to be installed to do that, so TmpgEnc is not needed.

Is it everytime 0xe0 ?
Or would this be better?

Quote:

-dumpvideo (MPLAYER only)
Dump raw compressed video stream to ./stream.dump (not very usable).

And then rename stream.dump to movie.m2v, of course

Note: this would mean using mplayer -dumpvideo using the mencoder result stream as source.

Bilu

vhelp · #**112** 02-26-2004, 05:37 PM

Arg..

I give up. doom9 just won't let me in. But, thanks anyways.. I'll research
an alternative method - sorry pal.

-vhelp

Hydeus · #**113** 02-26-2004, 05:38 PM

Thx Rui. Exactly my point

rds_correia · #**114** 02-26-2004, 05:45 PM

Quote:

Originally Posted by bilu

Is it everytime 0xe0 ?
Or would this be better?

Don't know bilu, but all clips I tested yet were ok with 0xe0.

Quote:

Originally Posted by bilu

-dumpvideo (MPLAYER only)
Dump raw compressed video stream to ./stream.dump (not very usable).

And then rename stream.dump to movie.m2v, of course

Note: this would mean using mplayer -dumpvideo using the mencoder result stream as source.

Bilu

I think I tried that and it didn't work. Something about not being available for mpeg2 if I recall it.
But I could be wrong.
Be a sports and try it it too.
Please tell us how it went. That would help us all alot.
Cheers

bilu · #**115** 02-26-2004, 05:45 PM

Quote:

Originally Posted by vhelp

Arg..

I give up. doom9 just won't let me in. But, thanks anyways.. I'll research
an alternative method - sorry pal.

-vhelp

http://www.doom9.org/software2.htm

Goto to VOB Tools. It's the first in the list. Use Open instead of Save.
Doesn't work with Opera, just with IE. Maybe with Mozilla...

Bilu

vhelp · #**116** 02-26-2004, 05:48 PM

Ahh. it's working now - thanks bilu

-vhelp

marcellus · #**117** 02-26-2004, 05:53 PM

Offtopic:
@rds_correia
I didn't manage to make any progress with the hosting. Even with netfirms the images are unreachable, they spit out a message that they don't alow direct linking and so on.

As a workaround I made this html page with information croped from original post so you can find my settings.
http://marcellusvcd.netfirms.com/settings.htm

Good luck with your test!

marcellus

Hydeus · #**118** 02-26-2004, 05:59 PM

@ Marcellus
Sugestion: lower the number of B-frames. It lowers file size (dont ask me why) and speeds up encoder. This is Incredible way. I've go 1b frame.

rds_correia · #**119** 02-26-2004, 06:04 PM

Quote:

Originally Posted by marcellus

Offtopic:
@rds_correia
I didn't manage to make any progress with the hosting. Even with netfirms the images are unreachable, they spit out a message that they don't alow direct linking and so on.

As a workaround I made this html page with information croped from original post so you can find my settings.
http://marcellusvcd.netfirms.com/settings.htm

Good luck with your test!

marcellus

Great.
Hey those BV pics look really nice.
Now I'm gonna give it a go.
C ya

marcellus · #**120** 02-26-2004, 06:09 PM

Quote:

Originally Posted by Hydeus

@ Marcellus
Sugestion: lower the number of B-frames. It lowers file size (dont ask me why) and speeds up encoder. This is Incredible way. I've go 1b frame.

Hi Hydeus
Well, I ended up with the value of 4 because that way I noticed that the quantization stays lower at the same bitrate setting (at least in my tests). When I increased the B value even more the quantization goes even lower but the image tends to be uglyer and messed-up.
I noticed myself the speed increase with less B frames and I explain it by the fact that probably the algorithm to produce a B frame is more CPU intensive than for a P frame.
bye
marcellus