ynot1234567890 wrote:
> Hello,
> I have several media players (Sonos, PI3 - Moode Player, Android Settop
> boxes - BubbleUPnP). They all communicate with LMS 7.9 using latest UPnP
> bridge plugin. Each player has some unique features which allow some
> formats to work, some not so much. One thing I have noticed is that if
> the audio files are converted to PCM format, things like gapless
> playback, replay gain, etc.. function properly. Because my network is
> quite robust and the LMS server is pretty powerful, I have setup LMS to
> stream to the players only in PCM format and the server transcodes all
> files to this format PCM at 44.1kHz, 16 bit regardless of format MP3,
> FLAC, ALAC, etc.. .
>
> I have managed to use make this work with all formats except FLAC high
> sampling rate files like 88.2 and 96 kHz files at 24 or 32 bit. Many of
> my players do not support the high res FLAC format (Sonos in
> particular)
>
> I realize I can transcode the highres files to flac 44.1/24 format
> offline and save them but I was hoping to setup a custom-convert.conf
> file to do this automatically on demand.
>
> On the command line: sox -V6 thriller.flac -t wav -r 44.1k -b 16
> thriller_16_441.wav works fine and the file is resampled properly.
> Using custom-convert.conf like:
>
> flc pcm * *
> # FT:{START=--skip=%t}U:{END=--until=%v}D:{RESAMPLE=-r %d}
> [sox] $FILE$ -t raw -r 44.1k -b 16 -c 2
>
> works well with flac upto 44.1/16 resulting in a PCM 1411 kbps file but
> when I get to 88.1 or 96kHz the command returns a PCM stream of 4233
> kbps and it of course sounds like the chipmunks. I would ultimately
> like to transcode it properly to 44.1k / 16 bit.
>
> I have read over the thread and reviewed logs, and tried to understand
> how the plugin fits in with the UPnP plugin but seem to be at a loss. I
> have tried other methods to convert using FLAC, SOX and Lame but to no
> avail. Any help would be appreciated.
>
> Ynot.
Are you aware that you can specify a specific MAC for transcoding? So
instead of
flc pcm * *
you could put
flc pcm * aa:bb:cc:dd:ee:ff
where the aa.... is a specific player's MAC.
You could then tailor the conversions to each player's capabilities.
As to why this specific transcode doesn't work for you I'm unclear. Are
you sure you mean to use 'raw' rather than 'wav'?
I assume you are specifying pcm as the only valid codec for each player
in the UPnP bridge configuration (rather than some other LMS
configuration setting).
LMS 7.9 on VortexBox Midi box, Xubuntu 16.04, FLACs 16->24 bit,
44.1->192kbps.
LMS plugin UPnP/DLNA Bridge to MF M1 CLiC (to A308CR amp & ESLs) &
Marantz CR603 UPnP renderers.
Alternatively Minimserver & Upplay to same & to upmpdcli/mpd PC
renderers.
Squeezelite to Meridian USB Explorer DAC to PC speakers/headphones.
Wireless Xubuntu 16.04 laptop firefox/upplay or Android 'phone with
Squeeze-Commander/BubbleUPnP controls LMS/Minimserver.
Also a Touch with EDO, plus spare, unused.
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