[vlc] Re: Sudden problem when playing 'Labyrinth' DVD with vlc 0.8.1

[Mark Moriarty]

See what the developers have to say.

By any chance is it just this one DVD, others play fine?

It does sound like a media error.  You get those sometimes while using TV
players, too, a hard spot where the DVD "sticks" (freezes), and you have to
jump ahead to get past it.  The only thing I've ever done is to try a light
cleaning, soft cloth with a bit of rubbing alcohol -- I'm not saying this is
good/proper, just that it's something I've done that has worked. 

(it could be truly bad media, a "bit hit" where the actual DVD is bad and
even its error correction can not get past things)

-----Original Message-----
From: vlc-bounce at videolan.org [mailto:vlc-bounce at videolan.org] On Behalf Of
Dag Wieers
Sent: Saturday, February 12, 2005 3:47 PM
To: vlc at videolan.org
Subject: [vlc] Re: Sudden problem when playing 'Labyrinth' DVD with vlc
0.8.1

On Sat, 12 Feb 2005, Mark Moriarty wrote:

> > So it may be a decoding bug. I'm not a programmer, so any 
> > information to how to provide proper debugging info to resolve this 
> > problem is welcome.
>
> Launch vlc with:
> Vlc -vvv --extraintf logger
> 
> That will open up a separate log window.
> You can then do a File -- Open Disc, start the movie, advance it to 
> just before where the problem occurs, see what is logged when it stops
playing.

Hi Mark,

That was quick, I didn't even finish the movie :) This is the output:

	[00000259] main private debug: decoded 108/108 pictures
	[00000238] dvdnav demuxer warning: cannot get next block (Error
reading from DVD.)
	[00000237] main input debug: closing input
	[00000240] main private debug: thread -1277289552 joined
(dvdnav.c:300)
	[00000088] main module debug: unlocking module "libmpeg2"
	[00000241] main decoder debug: thread -1290273872 joined
(src/input/decoder.c:189)
	[00000241] main decoder debug: killing decoder fourcc `mpgv', 21 PES
in FIFO
	[00000078] main module debug: unlocking module "a52"
	[00000256] main decoder debug: thread -1311659088 joined
(src/input/decoder.c:189)
	[00000256] main decoder debug: killing decoder fourcc `a52 ', 0 PES
in FIFO
	[00000041] main module debug: unlocking module "a52tofloat32"
	[00000040] main module debug: unlocking module
"bandlimited_resampler"
	[00000257] main audio output debug: thread -1328329808 joined
(oss.c:544)
	[00000228] main module debug: unlocking module "oss"
	[00000048] main module debug: unlocking module "float32tos16"
	[00000068] main module debug: unlocking module "float32_mixer"
	[00000237] main input warning: Program doesn't contain anymore ES,
TODO cleaning ?
	[00000030] main module debug: unlocking module "dvdnav"
	[00000237] main input debug: thread -1266386000 joined
(src/input/input.c:290)
	[00000229] main playlist debug: garbage collector destroying 1 vout
	[00000222] main module debug: unlocking module "xvideo"
	[00000244] main video output debug: thread -1301169232 joined
(src/video_output/video_output.c:483)

Although the error seems to be caused by reading from DVD. The DVD is brand
new, no visible scratch or anything and no error output in Linux. 
(Which you would expect if it was a medium error)

I doubt it is related to a corrupted medium or corrupted stream. How could
we debug this further. Is it libdvdread ? Should I address another forum ?

Thanks in advance :)
--   dag wieers,  dag at wieers.com,  http://dag.wieers.com/   --
[all I want is a warm bed and a kind word and unlimited power]

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