[Icecast] Icecast Digest, Vol 65, Issue 4
Edgardo Alfonso Tapia del Valle
asoprocoin at yahoo.com
Tue Oct 27 23:33:53 UTC 2009
Amigos:
Serìa posible que sus comentarios, sugerenciaas, invitaciones, consultas, opiniones, los pueda recibir en idioma español?
Atentamente:
Edgardo Tapia
--- El mar 27-oct-09, icecast-request at xiph.org <icecast-request at xiph.org> escribió:
> De: icecast-request at xiph.org <icecast-request at xiph.org>
> Asunto: Icecast Digest, Vol 65, Issue 4
> A: icecast at xiph.org
> Fecha: martes, 27 octubre, 2009, 4:00 pm
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> Today's Topics:
>
> 1. Vorbis still glitching on metadata
> update? (Andreas Bergstr?m)
> 2. Re: Vorbis still glitching on metadata
> update? (Petr Pisar)
> 3. Re: Vorbis still glitching on metadata
> update? (Andreas Bergstr?m)
> 4. Re: Vorbis still glitching on metadata
> update? (Thomas B. Ruecker)
> 5. Re: Vorbis still glitching on metadata
> update? (Karl Heyes)
> 6. Re: Vorbis still glitching on metadata
> update? (Petr Pisar)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 27 Oct 2009 10:09:22 +0100
> From: Andreas Bergstr?m <andreas.bergstrom at hiof.no>
> Subject: [Icecast] Vorbis still glitching on metadata
> update?
> To: icecast at xiph.org
> Message-ID: <9B992C70-CAAD-401F-8A8E-0457DBD0E601 at hiof.no>
> Content-Type: text/plain; charset=iso-8859-1;
> format=flowed; delsp=yes
>
> Greetings,
>
> I am trying to track down a bug with intermittant glitching
> in our
> Vorbis streams.
>
> I am running Icecast 2.3.2 on Ubuntu 9.04.
>
> Several Vorbis clients seem to glitch on some (not all)
> metadata
> updates. As we update metadata 3 to 4 times a minute, this
> is
> something we are trying to fix, VLC gives the following
> output on
> metadata update:
>
> main warning: the mixer got a packet in the past (22371)
> main warning: the mixer got a packet in the past (1038)
> main warning: mixer start isn't output start (398)
> ogg debug: end of a group of logical streams
> ogg debug: found vorbis header
> ogg debug: will reuse old stream to avoid glitch
> ogg debug: beginning of a group of logical streams
> main error: ES_OUT_RESET_PCR called
> main warning: received buffer in the future
> main debug: Buffering 0%
> main debug: Buffering 0%
> main debug: Buffering 19%
> main debug: Buffering 40%
> main debug: Buffering 63%
> main debug: End of audio preroll
> main debug: Buffering 84%
> main debug: Stream buffering done (1274 ms in 144 ms)
> main debug: Decoder buffering done in 0 ms
>
> For testing you can compare:
>
> http://radio.hiof.no/nrk-jazz-128 (MP3 stream, no
> glitching)
> http://radio.hiof.no/nrk-jazz-128.ogg
> (Vorbis stream, glitches)
>
> Metadata is updated via the web admin interface from a
> script.
>
> Has anyone else encountered this or know a way to fix this
> issue?
>
> Regards,
>
> --
> Andreas Bergstr?m
> ?stfold University College
> Dept. of Computer Sciences
> Tel: +47 69 21 53 71
> http://media.hiof.no/
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 27 Oct 2009 11:14:01 +0100
> From: Petr Pisar <petr.pisar at atlas.cz>
> Subject: Re: [Icecast] Vorbis still glitching on metadata
> update?
> To: icecast at xiph.org
> Message-ID: <20091027101356.GG3536 at album.bayer.ipv6ia.org>
> Content-Type: text/plain; charset="utf-8"
>
> On Tue, Oct 27, 2009 at 10:09:22AM +0100, Andreas Bergstr?m
> wrote:
> >
> > Several Vorbis clients seem to glitch on some (not
> all) metadata
> > updates. As we update metadata 3 to 4 times a minute,
> this is
> > something we are trying to fix, VLC gives the
> following output on
> > metadata update:
> >
> [?]
> > http://radio.hiof.no/nrk-jazz-128.ogg
> (Vorbis stream, glitches)
> >
> MPlayer plays very well, moc (music on console) too (but it
> reports `Stream
> error' on each meatadata update).
>
> Reference implementation ogg123 produces glitches. It says
> ALSA underrun and
> rebufferes the stream.
>
> All players tested with 128 kB buffer.
>
> BTW, I your IPv6 streams do not work because:
>
> $ ping6 -n radio.ipv6.hiof.no
> PING
> radio.ipv6.hiof.no(2001:700:a00:ff33:216:3eff:fe75:c27d) 56
> data bytes
> From 2001:700:0:1003::2 icmp_seq=1 Destination unreachable:
> Address unreachable
>
> -- Petr
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 3
> Date: Tue, 27 Oct 2009 12:11:19 +0100
> From: Andreas Bergstr?m <andreas.bergstrom at hiof.no>
> Subject: Re: [Icecast] Vorbis still glitching on metadata
> update?
> To: icecast at xiph.org
> Message-ID: <1AE9F48C-F0B7-42F9-9159-66196117678C at hiof.no>
> Content-Type: text/plain; charset=iso-8859-1;
> format=flowed; delsp=yes
>
>
> On 27. okt. 2009, at 11:14, Petr Pisar wrote:
> > MPlayer plays very well, moc (music on console) too
> (but it reports
> `Stream
> > error' on each meatadata update).
>
> OK, thank you.
>
> > Reference implementation ogg123 produces glitches. It
> says ALSA
> > underrun and
> > rebufferes the stream.
>
> So could be clientside, could be serverside, time to dig
> deeper, I
> guess.
>
> > All players tested with 128 kB buffer.
> >
> > BTW, I your IPv6 streams do not work because:
> >
> > $ ping6 -n radio.ipv6.hiof.no
> > PING
> radio.ipv6.hiof.no(2001:700:a00:ff33:216:3eff:fe75:c27d)
> 56
> > data bytes
> > From 2001:700:0:1003::2 icmp_seq=1 Destination
> unreachable: Address
> > unreachable
>
>
> Ah thanks, found a configuration error, it _should_ work
> now.
>
> Regards,
>
> --
> Andreas Bergstr?m
> ?stfold University College
> Dept. of Computer Sciences
> Tel: +47 69 21 53 71
> http://media.hiof.no/
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 27 Oct 2009 13:11:38 +0000
> From: "Thomas B. Ruecker" <dm8tbr at afthd.tu-darmstadt.de>
> Subject: Re: [Icecast] Vorbis still glitching on metadata
> update?
> To: Icecast <Icecast at xiph.org>
> Message-ID: <4AE6F18A.20101 at afthd.tu-darmstadt.de>
> Content-Type: text/plain; charset=ISO-8859-1;
> format=flowed
>
> Hi,
>
> Andreas Bergstr?m schrieb:
> > Metadata is updated via the web admin interface from a
> script.
> >
>
> sorry for stating the obvious:
> Injecting the metadata directly within the source client is
> not an
> option for you?
>
>
> Maybe Karl can say something about the metadata update?
>
> Cheers
>
> Thomas
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 27 Oct 2009 16:40:02 +0000
> From: Karl Heyes <karl at xiph.org>
> Subject: Re: [Icecast] Vorbis still glitching on metadata
> update?
> To: icecast at xiph.org
> Message-ID: <4AE72262.1020303 at xiph.org>
> Content-Type: text/plain; charset=ISO-8859-1;
> format=flowed
>
> On 27/10/09 09:09, Andreas Bergstr?m wrote:
> > Greetings,
> >
> > I am trying to track down a bug with intermittant
> glitching in our
> > Vorbis streams.
> >
> > I am running Icecast 2.3.2 on Ubuntu 9.04.
> >
> > Several Vorbis clients seem to glitch on some (not
> all) metadata
> > updates. As we update metadata 3 to 4 times a minute,
> this is
> > something we are trying to fix, VLC gives the
> following output on
> > metadata update:
>
> > For testing you can compare:
> >
> > http://radio.hiof.no/nrk-jazz-128 (MP3
> stream, no glitching)
> > http://radio.hiof.no/nrk-jazz-128.ogg
> (Vorbis stream, glitches)
>
> inserts for ogg are different to mp3. It is generally
> better to get the
> source client to do that as it will be in sync with the
> content.
>
> > Metadata is updated via the web admin interface from a
> script.
> >
> > Has anyone else encountered this or know a way to fix
> this issue?
> >
>
> from here, ogg123 is ok (although a 128k buffer, not sure
> what the
> prebuffer % is, seems to be low, try increasing
> those). mplayer is fine
> but vlc keeps resetting itself in a major way on a new
> logical stream.
> The format of the stream looks ok, I don't see any specific
> issue with
> it. There is one other thing I can check but I'll have to
> get back to
> you on that.
>
> karl.
>
>
>
> ------------------------------
>
> Message: 6
> Date: Tue, 27 Oct 2009 18:14:52 +0100
> From: Petr Pisar <petr.pisar at atlas.cz>
> Subject: Re: [Icecast] Vorbis still glitching on metadata
> update?
> To: icecast at xiph.org
> Message-ID: <20091027171449.GJ3536 at album.bayer.ipv6ia.org>
> Content-Type: text/plain; charset="utf-8"
>
> On Tue, Oct 27, 2009 at 04:40:02PM +0000, Karl Heyes
> wrote:
> > On 27/10/09 09:09, Andreas Bergstr?m wrote:
>
> > > http://radio.hiof.no/nrk-jazz-128.ogg
> (Vorbis stream, glitches)
> >
> > from here, ogg123 is ok (although a 128k buffer, not
> sure what the
> > prebuffer % is, seems to be low, try increasing
> those).
>
> I check it out with bigger buffer (size 512 kB, prebuffer
> 80 %) again
> and it sounds perfectly now. Maybe mplayer has better TCP
> tunning than
> ogg123 because the buffer fill stays around 37--40 % but
> ogg123 shows
> decreasing fill periodically with 128kB buffer.
>
> -- Petr
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> ------------------------------
>
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> End of Icecast Digest, Vol 65, Issue 4
> **************************************
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