Icecast - Feb 2005 - theora streaming problem...

[oddsock, this concerns your theora guide, so i'm cc:ing you]

Karl Heyes wrote:
> On Mon, 2005-02-21 at 22:04, Joern Nettingsmeier wrote:
> 
>>hi everyone!
>>
>>
>>i'm playing around with theora streaming for the linux audio
conference
>>2005 (http://lac.zkm.de).
> 
> 
> nice,
> 
> 
>>i checked out svn.xiph.org/trunk, built all ogg, vorbis, speex and 
>>theora related libs from scratch, then pulled icecast-2.2.0.
> 
> 
> 
>>three issues:
>>
>>
>>[1]
>>
>>icecast runs fine as always, but when i do
>>cat myvideo.ogg | oggfwd myhost 8000 mypasswd /test.ogg, the stream dies
>>after a few seconds. (the icecast log is appended below.)
>>
>>the same command sequence with an ogg vorbis audio file instead of the 
>>theora video works without problems.
> 
> 
> that would indicate libshout timing thing, make sure it's using the
> right libshout. After a quick check, it looks like libshout 2.1 will be
> ok
dead on. thanks. i pulled icecast/branches/kh/libshout, is that correct? 
at least it works for me. it's not exactly obvious where libshout 2.1 is...

>>[2]
>>
>>i tried to follow oddsock's howto at 
>>http://www.oddsock.org/guides/video.php, but ezstream does not compile 
>>for me. it bails out with
> 
> ...
> 
>>probably something obvious, but i could not find where SHOUT_FORMAT_OGG 
>>is defined... libshout is installed, and it's not in there.
> 
> 
> you probably have libshout 2.0 installed
right. libshout from -kh fixed that too.
oddsock, could you add a little hint to your theora guide to make sure 
everyone gets the correct libshout?
>>[3]
>>
>>when i transcode an mpeg2 file to theora, it's barely faster than 
>>realtime on an athlon64 4000+. is this to be expected, or did i forget 
>>some optimizations? here's the ffmpeg output, so that you can see
the
>>stream properties.
> 
> 
> AFAIK the theora lib is not optimised yet, there is some work going on
> in the theora-mmx branch to improve that but check that you have a
> recent gcc producing code for athlon 64 as well.
i'm using -march=k8, which according to the gcc manpage implies all simd 
streaming optimizations the chip is capable of...


many thanks,

j?rn

Joern Nettingsmeier wrote:
>>> [1]
>>>
>>> icecast runs fine as always, but when i do
>>> cat myvideo.ogg | oggfwd myhost 8000 mypasswd /test.ogg, the stream
>>> dies after a few seconds. (the icecast log is appended below.)
>>>
>>> the same command sequence with an ogg vorbis audio file instead of 
>>> the theora video works without problems.
>>
>>
>>
>> that would indicate libshout timing thing, make sure it's using the
>> right libshout. After a quick check, it looks like libshout 2.1 will be
>> ok
> 
> 
> dead on. thanks. i pulled icecast/branches/kh/libshout, is that correct? 
> at least it works for me. it's not exactly obvious where libshout 2.1
is...
unless one reads the mailing list and finds the official release 
announcement. bzzzzt.
to my excuse it is not yet linked from the website.. ;)

At 05:16 PM 2/21/2005, you wrote:
>>dead on. thanks. i pulled icecast/branches/kh/libshout, is that correct?
>>at least it works for me. it's not exactly obvious where libshout
2.1 is...
>
>unless one reads the mailing list and finds the official release 
>announcement. bzzzzt.
>to my excuse it is not yet linked from the website.. ;)
when I wrote that guide, I thought we were closer than we were to a 
libshout2.1 release.  As you mentioned, libshout2.1 was released a few days 
ago and can be downloaded here 
http://downloads.xiph.org/releases/libshout/libshout-2.1.tar.gz . The 
mirroring system that was implemented a while back can be pretty 
frustrating at times, and there can be a few days of lag where you can see 
that there is a release, but cannot get to it....

and for the record, that ezstream error message is exactly due to not 
having libshout 2.1...

oddsock