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	      Linux Video & DVD Project Mailing List Archives

From lennon@igrin.co.nz Tue, 31 Aug 1999 21:17:50 +1200
Date: Tue, 31 Aug 1999 21:17:50 +1200
From: Craig Whitmore lennon@igrin.co.nz
Subject: [Livid-dev] New NIST-0.5

Just downloaded nist-0.5 and got it running. I am impressed.. I can play
unencrypted DVD (I tried all of mine(about 20) and about 1/3 of them are all
unencryted (Like Spawn). I have a few of questions..

1) Speed.. on a Celeron 450 (300 Overclocked) I only get about max 10 fps..
Why is this? Just the software is not
very optimised yet. (in windows dvd I can get full rate). What has to be
done to make it faster?
2) Can we make the display full screen if possible?
3) Command options.. alot of the options don't work unless you put them
after the -f filename like -stream X dont' work
unless you put -f filename.vob -stream X

Thanks
Craig Whitmore

From Joachim.Koenig@tecnomen.com Tue, 31 Aug 1999 11:47:21 +0200
Date: Tue, 31 Aug 1999 11:47:21 +0200
From: Joachim Koenig Joachim.Koenig@tecnomen.com
Subject: [Livid-dev] New NIST-0.5

Hi Craig,
some answers:
1) Something seems to be wrong with your system. On my PII 350, I get
already ca.17 fps. Do you have a PCI or AGP card ? Also, you X Server
may be slow. You could try to enable the DGA option to bypass the X server
(look into the README). One reason for being so slow is the need for
converting from YUV to RGB (takes up to 20% of the time). Anyway there 
is more optimization possible and I'm working on that.

2) Try to make an X server configuration with the required solution 
(XF86Config Modeline 720x480)). That's the fastest way. If the software 
has to zoom the picture then it gets slower (of course).

3) I think it is not the -f option, but the -vob option. The -vob option
resets 
the stream to 0, as this is the only Video stream in a DVD. I know that I
have to do 
something to select the right audio stream.

mfg
Joachim


> -----Original Message-----
> From: Craig Whitmore [SMTP:lennon@igrin.co.nz]
> Sent: Tuesday, August 31, 1999 11:18 AM
> To: livid-dev@livid.on.openprojects.net
> Subject: [Livid-dev] New NIST-0.5
> 
> Just downloaded nist-0.5 and got it running. I am impressed.. I can play
> unencrypted DVD (I tried all of mine(about 20) and about 1/3 of them are
> all
> unencryted (Like Spawn). I have a few of questions..
> 
> 1) Speed.. on a Celeron 450 (300 Overclocked) I only get about max 10
> fps..
> Why is this? Just the software is not
> very optimised yet. (in windows dvd I can get full rate). What has to be
> done to make it faster?
> 2) Can we make the display full screen if possible?
> 3) Command options.. alot of the options don't work unless you put them
> after the -f filename like -stream X dont' work
> unless you put -f filename.vob -stream X
> 
> Thanks
> Craig Whitmore
> 
> 
> 
> 
> 
> _______________________________________________
> Livid-dev maillist - Livid-dev@livid.on.openprojects.net
> http://livid.on.openprojects.net/mailman/listinfo/livid-dev

From lennon@igrin.co.nz Sat, 4 Sep 1999 13:23:23 +1200
Date: Sat, 4 Sep 1999 13:23:23 +1200
From: Craig Whitmore lennon@igrin.co.nz
Subject: [Livid-dev] DVD Player (nist-0.5)

I compiled Nist -0.5 with DGA Support and it runs alot faster on my machine
I can get about 22-24 fps now (instead of 7-8 with NO DGA Support)

What FPS should the DVD play at for full speed?

(Celeron 450 (300 OverClocked), Riva TNT Card under X). I've had no crashes
yet. (Turned Audio off with -na -ns AFTER -f filename)

If I don't turn the audio syncing off (even if I turn off the Audio) The
video stops after a short while

If I have a card ( I have both) with 2 stereo outputs(Like SBLive or Monster
Sound MX300).. can the ac3 decoder program
be made so it downsamples the ac3 to 4 channels?

Thanks
Craig Whitmore
iGRIN Internet

From pvolcko@concentric.net Sat, 4 Sep 1999 08:45:38 -0400 (EDT)
Date: Sat, 4 Sep 1999 08:45:38 -0400 (EDT)
From: pvolcko@concentric.net pvolcko@concentric.net
Subject: [Livid-dev] DVD Player (nist-0.5)

> What FPS should the DVD play at for full speed?

30 FPS is what DVD requires, but thats just for video processing, you
have to try and get something like 60-90 with only video in order to make
sure you have the processing power needed for AC-3, CSS (when/if it's put
in), and other processing.


If the FPS numbers being posted are combined MPEG-2 and AC-3 decoding (the
20+ numbers, not the 6-8 numbers) then things are looking pretty good. :)
More work is needed though, since there is sub-picture, navigation, CSS
decryption, and a few other minor things that need to be running at the
same time as this for full encrypted DVD playback. Id say if the FPS can
get boosted up to around 40-50 FPS decoding MPEG-2 and AC-3 at the same
time, then the minimum functionality could be implemented.

Hats off to Joachim, Aaron, and the others working on this though. Very
good progress. I emplore you guys to look into the licensing end of
things, though. I'd hate to see you all work on this, get it working and
optimized and everything, just to be sued or slapped with a cease and
desist. 

Paul Volcko
LSDVD

From lennon@igrin.co.nz Sun, 5 Sep 1999 09:34:56 +1200
Date: Sun, 5 Sep 1999 09:34:56 +1200
From: Craig Whitmore lennon@igrin.co.nz
Subject: [Livid-dev] DVD Player (nist-0.5)

From: <pvolcko@concentric.net>


> > What FPS should the DVD play at for full speed?
>
> 30 FPS is what DVD requires, but thats just for video processing, you
> have to try and get something like 60-90 with only video in order to make
> sure you have the processing power needed for AC-3, CSS (when/if it's put
> in), and other processing.

It was 20-24fps with No Audio.. get pretty bad results when the audio is
turned on (mostly cause its don't sync properly
at the moment)

Thanks
Craig Whitmore
iGRIN Internet
http://www.igrin.co.nz

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