On Sat, 2009-08-01 at 08:49 +0200, Julien BLACHE wrote:
> Tim Day <tim...@bottlenose.demon.co.uk> wrote:
> > By default mt-daapd transcodes things like .flac and .ogg to .wav.
> > This works well enough, but when a client is device is connected
> > by 802.11b (as my Roku devices are) they simply don't have enough
> > bandwidth to stream the .wavs without frequent rebuffering.
> 
> You should look into your wifi setup, because that really shouldn't
> happen. The SoundBridge can be a bit iffy with its wireless, but it
> also depends on the AP quite a lot. Not even mentioning the obvious
> signal strength issues ;)
>
> b+g mode sometimes doesn't work that great with some APs, so if you
> have an old b-only AP lying around, you should give it a try.

Hmmm.... I have a couple of b+g APs here and my Soundbridges (Pinnacle
versions, which I believe only do 802.11b) don't seem to be able to
sustain much more than 300kbps to either of them, even when they're
right next to the APs or with the APs in 802.11b-only mode.  For .wav
I'd guess you'd need 44k*16bit*2channels so say ~800Kbps.  I certainly
used to have no problem getting >1Mbit with an old lappy with an 802.11b
only PCMCIA card.  Wonder if the bottleneck is at the soundbridge end ?
I note a blogger describing the same issue here also has a Pinnacle:
http://www.smop.co.uk/blog/index.php/2007/12/02/soundbridge/
Also mentioned slide 4 in this presentation:
http://www.hantslug.org.uk/talks/2007-12-08/soundbridge.pdf

> > It would be nice if there was a simple way (ideally a single
> > config file option?) of getting the ssc-ffmpeg.so plugin provided
> > with mt-daapd (and which I believe is responsible for transcoding)
> > to output mp3 instead of .wav.  I looked into the transcoding
> 
> This is never going to happen in Debian, as we lack encoders for MP3
> and other formats due to patent issues.
> It sure can be done, but there would be no point since it couldn't be
> used anyway.

Ah yes good point.  Sorry, had forgotten about those issues.

Just been scanning the sources seeing if I could do a quick local fix by
patching src/plugins/ssc-ffmpeg.c but it seems thoroughly wedded to .wav
coming out of ffmpeg.  I'll have to give the custom transcoding another
go sometime (have since noticed a comment on firefly about plugins
config being deprecated and everything in plugins_dir is loaded anyway;
think that might have something to do with my failure to get my own
script called).

> > Would have submitted this on the http://forums.fireflymediaserver.org/
> > Feature Requests page but the whole site seems dead and overrun by spammers.
> 
> Just as dead as mt-daapd. I'd happily package my fork, but Debian
> currently lacks a crucial build-dep.

That's a shame.  mt-daapd is one of the more useful and used services on
my fileserver.  Is there anything under more active development expected
to provide similar functionality in debian (c.f the xmms->audacious
transition) ?  I've just discovered http://ihatemtdaapd.blogspot.com/
but they don't seem to have any credible suggestions for a replacement.

Thanks for maintaining this package
Tim





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