Icecast - Aug 2004 - the dummy playlist... chaining a clip to a stream.

Hello.

 I have a question. We run a number of public service audio streams. They
are picking up in popularity, and it would be nice to take some credit
for the bandwidth we are supplying. Lots of people directly linking to us.

 So I would like to attempt to do something that I've seen done with WMA
streams. I would like it so when a listener connects, it plays back a 20
second audio clip announcing who pays for it, then rolls into the real
audio stream.

 Any suggestions? I checked to see if there really was a file for the
dummy playlist that is referenced in links, hoping that I could shove a
pointer to the static served audio announcement first. No go there.

 I realize it presents all sorts of wierd issues, and if people directly
link to the audio stream then it wouldn't work... but is there any way to
accomplish this task?

 It would rock if Icecast supported inserting the audio upon connection,
but I realize there are all sorts of logistics that would be a
nightmare (relay hosts).

                        -- Ethan

<p><p><p>--- >8 ----
List archives:  http://www.xiph.org/archives/
icecast project homepage: http://www.icecast.org/
To unsubscribe from this list, send a message to
'icecast-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.

On 2002.12.04 16:00 Ethan wrote:
>  So I would like to attempt to do something that I've seen done with
WMA
> streams. I would like it so when a listener connects, it plays back a 20
> second audio clip announcing who pays for it, then rolls into the real
> audio stream.
> 
>  Any suggestions? I checked to see if there really was a file for the
> dummy playlist that is referenced in links, hoping that I could shove a
> pointer to the static served audio announcement first. No go there.
> 
>  I realize it presents all sorts of wierd issues, and if people directly
> link to the audio stream then it wouldn't work... but is there any way
to
> accomplish this task?
conceptually possible with icecast, but you don't want to do any
encoding there, just send out a preprocessed file.  It's the only
place that knows of client connects and that can kick off a sample
before the main stream.  It wouldn't work with relays unless the
relays did that as well.

I not aware of anything in place for this though.

karl.
--- >8 ----
List archives:  http://www.xiph.org/archives/
icecast project homepage: http://www.icecast.org/
To unsubscribe from this list, send a message to
'icecast-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.

On Wed, Dec 04, 2002 at 11:00:08AM -0500, Ethan wrote:
>  Any suggestions? I checked to see if there really was a file for the
> dummy playlist that is referenced in links, hoping that I could shove a
> pointer to the static served audio announcement first. No go there.
You can  save the dummy play-list from off the web, edit it to your liking and
serve it as a static page from a web server.  As you expected you can just add
a line to the top of the list specifying the url of an audio file containing
the credits you want each listener to hear.

If you serve the play-list from a web server make sure that the web server
software knows about the mime type that goes with your play-list format.  For
m3u play-lists the server needs to be able to tell clients that the Mime type of
files ending in .m3u is audio/x-mpegurl.

It sounds like you would have administrative control of your web server, but
if you don't you can generate your play-lists from a cgi script and set the
HTTP
header something equivalent to this:

    #!/bin/bash

    echo Content-Type: audio/x-mpegurl 
    echo 

    echo http://www.somedomain.net/credit.mp3
    echo http://icecast.somedomain.net:8000/phatstream

<p>Of course you still have to get all the linking sites to update their
links.

Hope this is some help.


-- 
pgp public key http://ubertechnique.com/seth/pgp_key.txt ID: 0x60F9B67A
--- >8 ----
List archives:  http://www.xiph.org/archives/
icecast project homepage: http://www.icecast.org/
To unsubscribe from this list, send a message to
'icecast-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.

> It sounds like you would have administrative control of your web server,
but
> if you don't you can generate your play-lists from a cgi script and set
the HTTP
> header something equivalent to this:
Yea I can add the mime type to the apache config.

Thanks a ton!
> Of course you still have to get all the linking sites to update their
> links.
> Hope this is some help.
VERY much so! Thanks

                                -- Ethan

--- >8 ----
List archives:  http://www.xiph.org/archives/
icecast project homepage: http://www.icecast.org/
To unsubscribe from this list, send a message to
'icecast-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.