[MPlayer-users] Autoreply: MPlayer-users Digest, Vol 12, Issue 82

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Today's Topics:

   1. Autoreply: MPlayer-users Digest, Vol 12, Issue 81
      (bjackowski at milwpc.com)
   2. Re: Re: Tools for mpeg* to DVD (rcooley)
   3. Re: Re: Tools for mpeg* to DVD (Corey Hickey)


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

Message: 1
Date: Thu, 18 Dec 2003 18:05:30 -0600
From: bjackowski at milwpc.com
Subject: [MPlayer-users] Autoreply: MPlayer-users Digest, Vol 12,
	Issue 81
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Today's Topics:

   1. Autoreply: MPlayer-users Digest, Vol 12, Issue 80
      (bjackowski at milwpc.com)
   2. Problem With TV Viewing. (Patrick Twohig)
   3. Re: Mencoder 2pass bitrate control (Ari Huttunen)
   4. Re: Tools for mpeg* to DVD (ephemeron at softhome.net)
   5. Re: Tools for mpeg* to DVD (rcooley)
   6. Re: Re: Tools for mpeg* to DVD (rcooley)
   7. New OSS and AC3 (JJ2Dogs)
   8. DVD -> DivX encoding - a/v out of sync. Advice	please.
      (Alain Barth?lemy)
   9. Re: Tools for mpeg* to DVD (Danny Bogaards)


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

Message: 1
Date: Thu, 18 Dec 2003 06:00:20 -0600
From: bjackowski at milwpc.com
Subject: [MPlayer-users] Autoreply: MPlayer-users Digest, Vol 12,
	Issue 80
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Today's Topics:

   1. Re: MPlayer 1.0pre3 RPMs extra dependency (anton)
   2. problem with XV driver in fullscreen mode (Nilmoni Deb)
   3. Re: Compilation problem with xvidcore-1.0.0-beta2 (Ari Huttunen)
   4. Re: Compilation problem with xvidcore-1.0.0-beta2 (Ari Huttunen)


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

Message: 1
Date: Thu, 18 Dec 2003 17:38:24 +1300
From: anton <anton_melser at paradise.net.nz>
Subject: Re: [MPlayer-users] MPlayer 1.0pre3 RPMs extra dependency
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Message-ID: <3FE12F40.6060303 at paradise.net.nz>
Content-Type: text/plain; format=flowed; charset=us-ascii


>Probably not, unless I get more requests than one.
>
>  
>
request number two
;-8



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

Message: 2
Date: Thu, 18 Dec 2003 01:04:54 -0500 (EST)
From: Nilmoni Deb <ndeb at ece.cmu.edu>
Subject: [MPlayer-users] problem with XV driver in fullscreen mode
To: mplayer-users at mplayerhq.hu
Message-ID:
	<Pine.LNX.4.53L-ECE.CMU.EDU.0312180046370.7822 at frodo.ece.cmu.edu>
Content-Type: TEXT/PLAIN; charset=US-ASCII


I am running mplayer latest CVS on mandrake-9.2.

When I run:

	mplayer -v -fs -vo xv file

often, just after switching to the fullscreen mode, the entire screen
becomes black. Ofcourse, if I press 'f' key then the video shows fine
after switching to the non-fullscreen mode. If I press 'f' again, video
shows just fine in FS-mode. Basically, the black screen problem appears
only when mplayer is starting up at FS-mode.

Note that the above problem appears, say, in 25% of the cases. Therefore,
this may have something to do with timing.

MPlayer-1.0pre1 had the same problem with XV driver in fullscreen mode.
But an earlier version of mplayer (0.91)  does _not_ have this problem
with the XV driver. So, some change in the libvo XV code may have caused
this bug.

In any case=, this problem is not there (for any version of mplayer) if I
use the X11 driver:

        mplayer -v -fs -vo x11 -zoom file


thanks..



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

Message: 3
Date: Thu, 18 Dec 2003 12:20:38 +0200
From: Ari Huttunen <hagrid at welho.com>
Subject: Re: [MPlayer-users] Compilation problem with
	xvidcore-1.0.0-beta2
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Message-ID: <3FE17F76.40204 at welho.com>
Content-Type: text/plain; charset=us-ascii; format=flowed

Corey Hickey wrote:
> I don't have any trouble compiling mplayer with xvid 1.0 beta 2. Are you
> sure all previous versions of xvid have been completely removed, and the
> new version properly installed?

Thanks, that was indeed the problem. The old library had been left in
/usr/lib while the new one was installed in /usr/local/lib. An old
library and a new header file mix badly :).

Ari



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

Message: 4
Date: Thu, 18 Dec 2003 12:20:38 +0200
From: Ari Huttunen <hagrid at welho.com>
Subject: Re: [MPlayer-users] Compilation problem with
	xvidcore-1.0.0-beta2
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Message-ID: <3FE17F76.40204 at welho.com>
Content-Type: text/plain; charset=us-ascii; format=flowed

Corey Hickey wrote:
> I don't have any trouble compiling mplayer with xvid 1.0 beta 2. Are you
> sure all previous versions of xvid have been completely removed, and the
> new version properly installed?

Thanks, that was indeed the problem. The old library had been left in
/usr/lib while the new one was installed in /usr/local/lib. An old
library and a new header file mix badly :).

Ari



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

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End of MPlayer-users Digest, Vol 12, Issue 80
*********************************************




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

Message: 2
Date: Thu, 18 Dec 2003 09:48:23 -0500
From: Patrick Twohig <p-twohig at ieee.org>
Subject: [MPlayer-users] Problem With TV Viewing.
To: mplayer-users at mplayerhq.hu
Message-ID: <3FE1BE37.8070506 at ieee.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I have a TV card installed and I want to watch TV using Mplayer.  There 
is one slight problem with it, though.  Whenever I load up Mplayer and 
change the channel, it sets the volume on the TV-card up to it's highest 
setting and the audio sounds very distored.  For my TV card, the audio 
chip is unsupported as a regular /dev/dsp* device, so my only recourse 
is to use the internal audio patch cable to connect it to my sound 
card.  However, the mixer is supported, and in other TV programs it maps 
correctly to that device and scales the volume down accordingly.  I 
tried using the following to get it working, but it didn't help.

mplayer -mixer /dev/mixer1 tv://

What can I do to force Mplayer to use that other mixer device?

Oh, and BTW, I can adjust my volume for the TV card in Kmix but whenever 
I change channels in Mplayer it jumps back up to the highest volume 
setting so it's possible, but not practical, to watch TV at a volume 
that won't make me deaf.



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

Message: 3
Date: Thu, 18 Dec 2003 18:27:56 +0200
From: Ari Huttunen <hagrid at welho.com>
Subject: Re: [MPlayer-users] Mencoder 2pass bitrate control
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Message-ID: <3FE1D58C.4050206 at welho.com>
Content-Type: text/plain; charset=us-ascii; format=flowed

Corey Hickey wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> jzaw wrote:
> 
>> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>>
>> On Wednesday, Dec 17, 2003, at 20:58 Europe/London, D Richard Felker 
>> III wrote:
>>
>>> Also, xvid is not recommended. lavc is faster and gives better
>>> quality.
>>
>>
>>
>> is this generally recognised or is the jury still out on this one?
>> I thought there was still some discussion about quality?
> 
> 
> It's generally recognized as true around here because nobody has been
> able to prove us wrong. A while ago I tried a sample encode with xvid
> 1.0 beta 2, and was impressed with the results; when I compared it to
> lavc, I really couldn't decide which I liked better.
> 
> I'd like to do some psnr tests of xvid, but it doesn't work with xvid
> 1.0:
> 
> Option xvidencopts: Unknown suboption psnr
> 
> libmpcodecs/ve_xvid4.c has no mention of psnr...

It's written "stats".

Ari



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

Message: 4
Date: Thu, 18 Dec 2003 16:59:49 +0800
From: ephemeron at softhome.net
Subject: Re: [MPlayer-users] Tools for mpeg* to DVD
To: <mplayer-users at mplayerhq.hu>
Message-ID: <87vfoesdq2.wl at acamar.localhost.invalid>
Content-Type: text/plain; charset=US-ASCII

On 16. December 2003 at 12:13PM -0800,
rcooley <rcooley at spamcop.net> wrote:

[...]

> > Exactly why do you recommend tcmplex over the other two (so far)
> > options?
>
> mplex is very complicated (needlessly), very strict about
> input, and gives very poor results in some cases (wasting huge
> ammounts of space in some cases).  tcmplex (which comes with
> transcode) is very simple, will accept just about anything, and
> just plain works.

How complex is "mplex -f 1 -o output input" (VCD) "mplex -f 4 -o
output input" (SVCD)?



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

Message: 5
Date: Thu, 18 Dec 2003 10:00:13 -0800
From: rcooley <rcooley at spamcop.net>
Subject: Re: [MPlayer-users] Tools for mpeg* to DVD
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Message-ID: <20031218100013.5372c8c5.rcooley at spamcop.net>
Content-Type: text/plain; charset=US-ASCII

On Thu, 18 Dec 2003 16:59:49 +0800
ephemeron at softhome.net wrote:

> How complex is "mplex -f 1 -o output input" (VCD) "mplex -f 4 -o
> output input" (SVCD)?

Not very complex at all...  if that had worked for me.

Andrew Stevens seems to think I was simply using a very buggy version
of mplex...  I will be looking into that.



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

Message: 6
Date: Thu, 18 Dec 2003 12:40:11 -0800
From: rcooley <rcooley at spamcop.net>
Subject: Re: [MPlayer-users] Re: Tools for mpeg* to DVD
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Message-ID: <20031218124011.0ff51e86.rcooley at spamcop.net>
Content-Type: text/plain; charset=US-ASCII

On Wed, 17 Dec 2003 23:57:20 +0100
Andrew Stevens <andrew.stevens at mnet-online.de> wrote:

 
> > works well, it's just too slow.  ffmpeg's mpeg2 codec is young, but
> > is already about 3x faster than mpeg2enc.
> 
> Unless I'm very much mistaken ffmpeg encodes MPEG-2 with interlaced
> support and B frames off.  These are on by default in mpeg2enc. If you
> turn them off  mpeg2enc runs a little over twice as fast (17 fps vs. 9
> fps on my Athlon/XP 2100+).  

So, you are saying, even with these 2 features off, mpeg2enc is still
about 1/3rd slower than ffmpeg's mpeg2 codec?

> B frames require big motion estimate search radii and are
> unfriendly to predictive motion estimators 

I think it's pretty much universal opinion of the more knowledgable
users on this mailing list, that B-frames are useless.  I personally
haven't yet seen a case where B-frames improve quality and/or reduce
filesizes.

> The upcomng release of mpeg2enc has the defaults set to ffmpeg like 
> behaviour...
> 
> Andrew
> 
> _______________________________________________
> RTFM!!!  http://www.MPlayerHQ.hu/DOCS
> Search:  http://www.MPlayerHQ.hu/cgi-bin/htsearch
> http://mplayerhq.hu/mailman/listinfo/mplayer-users




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

Message: 7
Date: Thu, 18 Dec 2003 22:53:54 +0100 (CET)
From: JJ2Dogs <JFV at seznam.cz>
Subject: [MPlayer-users] New OSS and AC3
To: Mplayer disc<mplayer-users at mplayerhq.hu>
Message-ID: <36954.102798-12165-2108505932-1071784434 at seznam.cz>
Content-Type: text/plain;	charset="iso-8859-2"

Hi
I am having a problem with my ALC650 onboard soundcard..
I can`t get working the hwac3?? Do I need to download some
utility??
I also couldn`t get running alsa with spdif, so I installed the new OSS which should support AC3 pass through. Now the spdif is working, but I can`t get 5.1 sound..
Please help.
____________________________________________________________
Zde pro Vás máme výrobky s prodlu¾enou zárukou 2+2 roky, odborný autorizovaný servis a kvalitní poradenství technikù. http://ad2.seznam.cz/redir.cgi?instance=64770%26url=http://www.prackymycky.cz



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

Message: 8
Date: Thu, 18 Dec 2003 23:20:19 +0100
From: Alain Barth?lemy <cassandre at bartydeux.be>
Subject: [MPlayer-users] DVD -> DivX encoding - a/v out of sync.
	Advice	please.
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Cc: SuSE-list <suse-linux-e at suse.com>
Message-ID: <20031218222019.GA4858 at portable.maison>
Content-Type: text/plain; charset=iso-8859-15

BUT ONLY A/V SYNC PROBLEM IN X SERVER (NOT IN PURE CONSOLE).

mplayer-OPre1
SuSE-8.2
AMD-Athlon2000
Video (integrated): SIS 650/651/M650/750 PCI/AGP VGA Display Adapter
Sound: Ensoniq 5880 Audio PCI

Thus I have 1-2 seconds image delay when I encode from a DVD (not from TV signal).

Same image delay when I read directly the DVD with mplayer.

I spent about 2 weeks to try to solve the problem. No obvious indication to
solve my problem in the Web, in the mailing-lists or in the manual.

Thus:

mencoder dvd://1 -mc 0 -noskip -skiplimit 0 -ovc lavc -lavcopts
vcodec=mpeg4:vhq:vbitrate=1500 -oac mp3lame -lameopts abr:br=128:vol=5 -o
temp.avi

To my surprise, I have no image delay (1-2 seconds) if I read the file in pure
console mode but well an image delay if I read it in an X environment (KDE or
Blackbox or WindowMaker). No delay in a Windows XP environment too.

Thus there is problem only in an X-environment.

Has anybody encounter that kind of problem just to know if it can be solved.

I have absolutely no a/v sync problem when I encode from a TV signal (with a TV
Card). Thus it is only a DVD <-> mplayer <-> X problem.

Any suggestion is welcome.

-- 
Alain Barthélemy
cassandre at bartydeux.be
http://bartydeux.be
Linux User #315631



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

Message: 9
Date: Fri, 19 Dec 2003 01:03:31 +0100
From: Danny Bogaards <danny at boware.nl>
Subject: [MPlayer-users] Re: Tools for mpeg* to DVD
To: mplayer-users at mplayerhq.hu
Message-ID: <200312190103.31267.danny at boware.nl>
Content-Type: text/plain;  charset="us-ascii"

Hi,

I tried using ffmpeg instead of mpeg2enc as was suggested in this thread, 
but I found a number of problems. I'm not talking about speed differences, 
because I haven't disabled interlacing and B-frames on mpeg2enc to 
actually compare. I just look at the resulting mpeg2 file and see the 
results in mplayer and when burned to dvd.

encoder with ffmpeg, mplex reports:
INFO: [mplex] No. Pictures    :    53199
INFO: [mplex] No. Groups      :     4488
INFO: [mplex] No. I Frames    :     4488 avg. size 57618 bytes
INFO: [mplex] No. P Frames    :    48711 avg. size 21984 bytes
INFO: [mplex] No. B Frames    :        0 avg. size     0 bytes
INFO: [mplex] No. D Frames    :        0 avg. size     0 bytes
INFO: [mplex] Average bit-rate :  4998000 bits/sec
INFO: [mplex] Peak bit-rate    : 10440400  bits/sec

and mplayer reports:
VIDEO:  MPEG2  720x576  (aspect 1)  25.000 fps    0.0 kbps ( 0.0 kbyte/s)

encoder with mpeg2enc, mplex reports:
INFO: [mplex] No. Pictures    :    53199
INFO: [mplex] No. Groups      :     3561
INFO: [mplex] No. I Frames    :     3561 avg. size 43648 bytes
INFO: [mplex] No. P Frames    :    14189 avg. size 26212 bytes
INFO: [mplex] No. B Frames    :    35449 avg. size 18709 bytes
INFO: [mplex] No. D Frames    :        0 avg. size     0 bytes
INFO: [mplex] Average bit-rate :  4476000 bits/sec
INFO: [mplex] Peak bit-rate    :  4949600  bits/sec

and mplayer says:
VIDEO:  MPEG2  720x576  (aspect 2)  25.000 fps  5000.0 kbps (625.0 kbyte/s)

Both sessions where encoded with:
-w 5000 --video_max_bitrate 8000 -export_asr 2

So I see three problems, the maximum bitrate is not as requested 
(8000kbps), the aspect ratio is not right and mplayer can't 'gues' the 
bitrate. The average bitrate is very accurate with ffmpeg though.....

Must be a header problem? Or must I use extra parameters when using ffmpeg?

The loolame hint didn't work for me. I have to resample from 44100 to 
48000. Toolame uses sox for that and the result was slightly slower as 
with mp2enc. Are there maybe other arguments to switch to toolame?

Danny



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

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http://mplayerhq.hu/mailman/listinfo/mplayer-users


End of MPlayer-users Digest, Vol 12, Issue 81
*********************************************




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

Message: 2
Date: Thu, 18 Dec 2003 17:17:40 -0800
From: rcooley <rcooley at spamcop.net>
Subject: Re: [MPlayer-users] Re: Tools for mpeg* to DVD
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Message-ID: <20031218171740.75c372ce.rcooley at spamcop.net>
Content-Type: text/plain; charset=US-ASCII

On Fri, 19 Dec 2003 01:03:31 +0100
Danny Bogaards <danny at boware.nl> wrote:


> Both sessions where encoded with:
> -w 5000 --video_max_bitrate 8000 -export_asr 2

> So I see three problems, 

What?  Only three?  There's plenty more!

> the maximum bitrate is not as requested (8000kbps),

I can't help there.  There are several options in transcode that don't
work along with ffmpeg.  That's a question for the transcode mailing
list, not here.  Although, the "-R" option _might_ help.

> the aspect ratio is not right 

Now that one I can help with...  Create a file named "ffmpeg.cfg". Put
the following lines in it:

[mpeg2video] 
aspect=4/3

That should take care of it.  Read docs/export_ffmpeg.txt under the
transcode source directory for more.

> and mplayer can't 'gues' the bitrate. 

I've seen this too, and just dismissed it.  It doesn't make much
difference if mplayer can't detect the video bitrate.

> The loolame hint didn't work for me. I have to resample from 44100 to 
> 48000. Toolame uses sox for that and the result was slightly slower as
> with mp2enc. 

Your audio-sync issues probably aren't caused by sox, or mp2enc, or
toolame.  However, you could just leave-out the audio codec
all-together and convert the audio by-hand, with whichever tools you
prefer.  I often use a command like this: 
  mplayer $INPUT -srate 48000 -ao pcm

> Are there maybe other arguments to switch to toolame?

Nope...  In fact there doesn't seem to be any ways to modify toolame's
befault behavior other than setting bitrate.  I actually had to edit
'export/export_toolame.c' just to force it to use psychoacoustic model
2.

> 
> Danny
> 



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

Message: 3
Date: Thu, 18 Dec 2003 22:04:52 -0800
From: Corey Hickey <bugfood-ml at fatooh.org>
Subject: Re: [MPlayer-users] Re: Tools for mpeg* to DVD
To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
Message-ID: <3FE29504.2020702 at fatooh.org>
Content-Type: text/plain; charset=us-ascii; format=flowed

rcooley wrote:

>>B frames require big motion estimate search radii and are
>>unfriendly to predictive motion estimators 
> 
> 
> I think it's pretty much universal opinion of the more knowledgable
> users on this mailing list, that B-frames are useless.  I personally
> haven't yet seen a case where B-frames improve quality and/or reduce
> filesizes.
> 
> 

I don't know about mpeg-2, but with mpeg-4 a single b-frame usually
increases PSNR slightly (while more than one is almost always bad).

The table below is for a one-minute clip I usually test on, that I
selected to be an even mix between fast and slow motion scenes.

+------------------+-------+-------+
| params           | psnr  | fps   |
+------------------+-------+-------+
| :vmax_b_frames=1 | 41.48 | 63.11 |
| :                | 41.34 | 74.68 |
| :vmax_b_frames=2 | 41.26 | 59.68 |
| :vmax_b_frames=3 | 41.01 | 57.79 |
| :vmax_b_frames=4 | 40.71 | 56.97 |
| :vmax_b_frames=5 | 40.42 | 56.83 |
+------------------+-------+-------+


As for the price/performance ratio, see the table below for a comparison
to trell, mbd=2, and mbd=1.

psnr_% = the psnr for each test divided by the psnr of ":"
fps_%  = the fps for each test divided by the fps of ":"
asdf   = the psnr increase for each test with respect to ":",
          divided by the fps decrease with respect to ":"
          (so, this is "psnr gain for each fps lost")

+------------------+-------+-------+--------+-------+-----------+
| params           | psnr  | fps   | psnr_% | fps_% | asdf      |
+------------------+-------+-------+--------+-------+-----------+
| :trell           | 41.63 | 58.98 | 100.70 |  0.79 |  0.001015 |
| :mbd=2           | 41.54 | 56.94 | 100.48 |  0.76 |  0.000821 |
| :vmax_b_frames=1 | 41.48 | 63.11 | 100.34 |  0.85 |  0.000334 |
| :mbd=1           | 41.43 | 62.29 | 100.22 |  0.83 |  0.000234 |
| :                | 41.34 | 74.68 | 100.00 |  1.00 | -0.000000 |
| :vmax_b_frames=2 | 41.26 | 59.68 |  99.81 |  0.80 | -0.000264 |
| :vmax_b_frames=3 | 41.01 | 57.79 |  99.20 |  0.77 | -0.001270 |
| :vmax_b_frames=4 | 40.71 | 56.97 |  98.48 |  0.76 | -0.002582 |
| :vmax_b_frames=5 | 40.42 | 56.83 |  97.77 |  0.76 | -0.003809 |
+------------------+-------+-------+--------+-------+-----------+


While the performance isn't exactly stellar compared to "the big two",
trell and mbd=2, it does edge out mbd=1 (note that that's 334 vs 234, if
your eyes are trying to trick you like mine just did to me).

Don't kill me if I messed up the math. :)

-Corey



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