MPD streaming AAC FLV

[M.J. Johnson]

Hello, all. I'm currently running Unslung 6.10 successfully with MPD
0.15.9. I'm able to stream MP3 encoded audio streams no problem, but I'm
unable to stream AAC encoded FLV audio streams. MPD has supported AAC in
versions >=0.14. I checked what was built into the version of MPD I'm
running, and it indicates AAC support via FFMPEG (which I have installed,
version 0.svn20080409).

Running top while attempting to play the AAC stream indicates CPU
utilization maxed out around 98%.

Does anyone on this list have experience getting this to work on NSLU? Am
I truly processor bound from decoding AAC FLV streams, or is there a work
around to avoid (for instance) the necessity of a FPU to decode the AAC
stream via FFMPEG?

TIA.

[gopher3_8]

Post by M.J. Johnson
Hello, all. I'm currently running Unslung 6.10 successfully with MPD
0.15.9. I'm able to stream MP3 encoded audio streams no problem, but I'm
unable to stream AAC encoded FLV audio streams. MPD has supported AAC in
versions >=0.14. I checked what was built into the version of MPD I'm
running, and it indicates AAC support via FFMPEG (which I have installed,
version 0.svn20080409).
Running top while attempting to play the AAC stream indicates CPU
utilization maxed out around 98%.
Does anyone on this list have experience getting this to work on NSLU? Am
I truly processor bound from decoding AAC FLV streams, or is there a work
around to avoid (for instance) the necessity of a FPU to decode the AAC
stream via FFMPEG?
TIA.

Hello TIA,

I'm trying to stream radio also, but in my case it's through medaitomb to a PS3. When you say that you're "streaming mp3 encoded audio", are you talking about files or live streams? I'd read about people streaming radio through MPD, but I thought that is was just out to a USB speaker. Unfortunately, I can't help you with your question, but could you tell me more about your set up? Maybe I should be using that instead of mediatomb? Thanks.



------------------------------------

[M.J. Johnson]

Brief response for general audiences, then taking this offline:

Incoming: I am streaming live mp3 encoded "broadcasts" via MPD, and then
out to a USB audio dongle -> amp + speakers. This is straightforward and
thoroughly documented in many places.

Outgoing: I also have the ability to take playlists in MPD and use them to
feed MP3s to an Icecast server for streaming mp3s in my collection to
anything capable of consuming an MP3 stream. This second option was no
easy task, since most streaming options are limited, with MPD typically
transcoding the MP3s for streaming - something the NSLU is effectively
incapable of without an FPU. I finally ran across some Perl scripts that
allowed me to cobble a solution together using ices as the glue between MPD
and Icecast. This solution basically just dumps the MP3 to Icecast without
any transcoding.

These links describe the solution in adequate detail:

http://wiki.yobi.be/wiki/Webradio
http://mpd.wikia.com/wiki/Hack:ices-client
http://www.757.org/~joat/wiki/index.php?n=Main.IcecastOnTheNSLU2

No idea if the PS3 can consume an Icecast stream or not. I use pyTivo on
my NSLU to share music within my home network of TiVos.

Side note (from my original ask): The radio station broadcasting the FLV
stream with the AAC encoding also has a straight AAC encoded stream (no FLV
container). Silly me for not looking for that first. The Slug w/MPD is
perfectly capable of decoding AAC without running out of processor cycles.

Post by gopher3_8
**
I'm trying to stream radio also, but in my case it's through medaitomb to
a PS3. When you say that you're "streaming mp3 encoded audio", are you
talking about files or live streams? I'd read about people streaming radio
through MPD, but I thought that is was just out to a USB speaker.
Unfortunately, I can't help you with your question, but could you tell me
more about your set up? Maybe I should be using that instead of mediatomb?
Thanks.