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Transcoding from FLAC to MP3 on Synology DS212+ NAS

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willsy

Serviio newbie

Posts: 6

Joined: Fri Oct 05, 2012 7:46 am

Post Sat Oct 06, 2012 7:59 am

Transcoding from FLAC to MP3 on Synology DS212+ NAS

Hi

I have successfully installed Serviio and I can now play transcode FLAC files to MP3 (unlike the native Synology Media server which just stutters). This is playing from a Synoloigy DS212+ to an Evoke Flow radio.

Problem is that I notice that my NAS CPU goes up to 100% when playing a FLAC file. I know this is to do with the lack of floating point on the CPU (Kirkwood 6282) but wondered if there is any way around this at the moment?

Regards

Will.
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willsy

Serviio newbie

Posts: 6

Joined: Fri Oct 05, 2012 7:46 am

Post Sat Oct 06, 2012 8:28 am

Re: Transcoding from FLAC to MP3 on Synology DS212+ NAS

It also seems to max out at 100% whatever I do... unless I stop the Java process...

The FLAC's actually keep breaking up but the MP3's seem OK.

Any ideas?

Thanks

Will.
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willsy

Serviio newbie

Posts: 6

Joined: Fri Oct 05, 2012 7:46 am

Post Sat Oct 06, 2012 8:59 am

Re: Transcoding from FLAC to MP3 on Synology DS212+ NAS

Correction - seems to have gone down again now I am playing MP3's...

So that leaves me with this question: Is there any way to transcode FLAC's reliably without using a PC or getting a more expesive and powerful NAS?!!?

Thanks

Will.
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patters

User avatar

DLNA master

Posts: 1282

Joined: Sat Oct 09, 2010 3:51 pm

Location: London, UK

Post Sun Oct 07, 2012 6:21 pm

Re: Transcoding from FLAC to MP3 on Synology DS212+ NAS

I have submitted a proposal to implement libshine into FFmpeg which would allow much more efficient MP3 encoding on ARM CPUs which lack an FPU.
https://ffmpeg.org/trac/ffmpeg/ticket/1457

I haven't had much time recently, but I want to get this moving again. Someone made a patch but they created it for a particular version of libshine that seems to require a multithreaded version of perl to compile, and there isn't one on Synology. I've been trying to build one but it's proved very difficult so far. I do expect to manage it eventually though...
LG OLED55B8PLA | PS4 Pro | Xbox One S | Synology DS214play
Serviio 2.1 package for Synology NAS - with limited hardware transcoding support!
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willsy

Serviio newbie

Posts: 6

Joined: Fri Oct 05, 2012 7:46 am

Post Sat Oct 13, 2012 9:41 pm

Re: Transcoding from FLAC to MP3 on Synology DS212+ NAS

Thanks for your reply Patters.

Wow, that would be absolutley fantastic to have such a facility on a NAS such as the DS212+. :D

I'll keep my eye's on this forum and keep my fingers crossed that things work out for it!

Best Regards,

Will.
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patters

User avatar

DLNA master

Posts: 1282

Joined: Sat Oct 09, 2010 3:51 pm

Location: London, UK

Post Tue Oct 30, 2012 10:30 pm

Re: Transcoding from FLAC to MP3 on Synology DS212+ NAS

Package version 014 now contains this enhancement - libshine is used as the MP3 encoder on ARM systems, allowing realtime transcoding to MP3.
LG OLED55B8PLA | PS4 Pro | Xbox One S | Synology DS214play
Serviio 2.1 package for Synology NAS - with limited hardware transcoding support!

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