Vorbis - Mar 2003 - oggenc crashes on WAV input (with q > 4.99)

Hi all,

I've got a strange problem. I was just encoding a new CD I bought a
couple of days ago (Muse - Hullabaloo Soundtrack) when I ran into a
strange bug.

After ripping track 8, CD 1 with cdparanoia under OpenBSD/alpha, I
wanted to encode it with oggenc (latest version from the
OpenBSD-current ports tree, (`oggenc -v` says 'OggEnc v1.0 (libvorbis
1.0)')).

Here's the output :

$ oggenc -q 8 track08.cdda.wav
Opening with wav module: WAV file reader
Encoding "track08.cdda.wav" to
         "track08.cdda.ogg"
at quality 8.00
Floating point exception (core dumped)

(as you can see, this is before starting the actual encoding)

Now the strange thing is that when I just start encoding the file at
the default quality level, I don't have this problem :

$ oggenc track08.cdda.wav
Opening with wav module: WAV file reader
Encoding "track08.cdda.wav" to
         "track08.cdda.ogg"
at quality 3.00
        [  1.8%] [ 1m56s remaining] |^C

<p>A binary search shows that it will still accept this file as input up
until -q 4.99. Starting with -q 5.00 oggenc dies.

Since it looks like this is in the first few samples of the song, I've
extracted only the first few samples (`cdparanoia 8-8:[.30] samp.wav`)
and got similar results. I have uploaded this file to my website :

http://www.weirdnet.nl/data/output.wav.gz

I'm guessing this is related to the jump to lossless stereo coupling
when going from q 4.99 to q 5.00, but have no way to be sure.

If you're interested in the coredump, please let me know and I'll
put it online too. A full version (at -q 4.99 or the original WAV) can
be made available too if deemed necessary. Please contact me privately
to arrange this.

Cheers,

Paul 'WEiRD' de Weerd


-- 
>++++++++[<++++++++++>-]<+++++++.>+++[<------>-]<.>+++[<+
+++++++++++>-]<.>++[<------------>-]<+.--------------.[-]
                 http://www.weirdnet.nl/                 
--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to
'vorbis-request@xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is
needed.
Unsubscribe messages sent to the list will be ignored/filtered.

Paul de Weerd <paul@mail.me.maar.nu> said:
> Hi all,
> 
> I've got a strange problem. I was just encoding a new CD I bought a
> couple of days ago (Muse - Hullabaloo Soundtrack) when I ran into a
> strange bug.
> 
> After ripping track 8, CD 1 with cdparanoia under OpenBSD/alpha, I
> wanted to encode it with oggenc (latest version from the
> OpenBSD-current ports tree, (`oggenc -v` says 'OggEnc v1.0 (libvorbis
> 1.0)')).
Paul,

There were a couple of problems in the 1.0 release that caused this sort of
error. x86 by default masks these floating point exceptions, so sometimes they
creep into releases (the developers don't have regular access to machines
where this is a problem - primarily alpha, though there may be some other
platforms where this happens - and testing sometimes doesn't get done as
thoroughly as we'd like).

Anyway, this is fixed in cvs, so please use that (we'll hopefully be doing a
1.0.1 release fairly soon, with this and many other bugs fixed).

Mike

--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to
'vorbis-request@xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is
needed.
Unsubscribe messages sent to the list will be ignored/filtered.

Paul de Weerd (paul@mail.me.maar.nu) wrote:
> OpenBSD-current ports tree, (`oggenc -v` says 'OggEnc v1.0 (libvorbis
> 1.0)')).
> I'm guessing this is related to the jump to lossless stereo coupling
> when going from q 4.99 to q 5.00, but have no way to be sure.
In Vorbis 1.0, lossless stereo occurs at quality level 6, not 5.
(It was 5 in Vorbis RC3.)


-- 
Greg Wooledge                  |   "Truth belongs to everybody."
greg@wooledge.org              |    - The Red Hot Chili Peppers
http://wooledge.org/~greg/     |


-------------- next part --------------
A non-text attachment was scrubbed...
Name: part
Type: application/pgp-signature
Size: 188 bytes
Desc: not available
Url :
http://lists.xiph.org/pipermail/vorbis/attachments/20030324/1b382c28/part-0001.pgp