DTS .ac3 files – FireFly Media Server

This topic has 18 replies, 6 voices, and was last updated 17 years, 7 months ago by fizze.

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10/11/2006 at 11:12 AM #766

fd0
Guest

Hi

I have been searching on this issue for a while but I seem to be unable to find the right info.
In my collection I have a bunch of DTS coded .ac3 files and my amp is a Denon DTS amp. I use Roku SB 1000 and according to their site it is possible to use SB to listen to DTS files. How do I go about to make this work.

mp3 is easy, has been running with mt-daapd for quite some time without any probs.

any help is appreciated

TIA
fd0

NB SB500 changed into SB1000

10/11/2006 at 1:06 PM #7239

fizze
Participant

in the soundbridge menu theres a setting like “stream multichannel audio” or, sort of.
You need that setting so it passes the ac3 sound.

I donno whats neccy on the firefly side.

But im curious to know since I’ll be sport a new DD capable amp soonish, too. 🙂

10/11/2006 at 10:32 PM #7240

fd0
Guest

@fizze wrote:

in the soundbridge menu theres a setting like “stream multichannel audio” or, sort of.
You need that setting so it passes the ac3 sound.

I donno whats neccy on the firefly side.

But im curious to know since I’ll be sport a new DD capable amp soonish, too. 🙂

I checked my soundbridge and multichannel audio is swtched on
I also checked the songs.gdb using strings and found that the files were indexed, meaning the entry in the conf file works :

extensions .mp3,.m4a,.m4p,.wma,.ac3,aac,.wav,.aiff

What more is needed to ensure mt-daapd (v 0.2.4) running on gentoo linux to serve .ac3 files to my SB

TIA
fd0

11/11/2006 at 4:17 AM #7241

rpedde
Participant

@fd0 wrote:

@fizze wrote:

in the soundbridge menu theres a setting like “stream multichannel audio” or, sort of.
You need that setting so it passes the ac3 sound.

I donno whats neccy on the firefly side.

But im curious to know since I’ll be sport a new DD capable amp soonish, too. 🙂

I checked my soundbridge and multichannel audio is swtched on
I also checked the songs.gdb using strings and found that the files were indexed, meaning the entry in the conf file works :

extensions .mp3,.m4a,.m4p,.wma,.ac3,aac,.wav,.aiff

What more is needed to ensure mt-daapd (v 0.2.4) running on gentoo linux to serve .ac3 files to my SB

TIA
fd0

That’s it. What exactly isn’t working? Do you see them while browsing but they don’t play? Or do you not even see them when browsing? They won’t have any metadata, so you’ll just see filenames as the title.

13/11/2006 at 9:31 PM #7242

fd0
Guest

@rpedde wrote:

That’s it. What exactly isn’t working? Do you see them while browsing but they don’t play? Or do you not even see them when browsing? They won’t have any metadata, so you’ll just see filenames as the title.

the SB1000 shows the file but doesnt play it. Seems it cannot play native .ac3 files. Is there a way around it? like using transcoding?

tnx

14/11/2006 at 12:24 AM #7243

rpedde
Participant

@fd0 wrote:

@rpedde wrote:

That’s it. What exactly isn’t working? Do you see them while browsing but they don’t play? Or do you not even see them when browsing? They won’t have any metadata, so you’ll just see filenames as the title.

the SB1000 shows the file but doesnt play it. Seems it cannot play native .ac3 files. Is there a way around it? like using transcoding?

tnx

Yes, but I don’t know if the soundbridge will do multichannel wav files, or how one would convert it to a multichannel wav file.

But generally, add ac3 to the transcode codecs, and edit your transcode script to convert the .ac3 file to a wav file.

That’s the rub, of course. I don’t know what an .ac3 file is, or what the tools are to deal with it. But by copying the transcoding stuff in the mt-daapd-ssc.sh, you can probably work it out, given that you apparently are already familiar with the format.

— Ron

14/11/2006 at 12:47 AM #7244

S80_UK
Participant

My understanding (actually my assumption) was that the “multi-channel audio” option simply allows the Soundbridge to pass the AC3 content unmodified out of the SPDIF port to any suitable external decoder – such as an AV Receiver. I am not aware of any other way to play these files without the server-side transcoding, in which case the option in the SoundBridge would be redundant.

14/11/2006 at 4:28 AM #7245

rpedde
Participant

@S80_UK wrote:

My understanding (actually my assumption) was that the “multi-channel audio” option simply allows the Soundbridge to pass the AC3 content unmodified out of the SPDIF port to any suitable external decoder – such as an AV Receiver. I am not aware of any other way to play these files without the server-side transcoding, in which case the option in the SoundBridge would be redundant.

I’ll ask one of the roku engineers if they have a codectype for raw ac3 content.

— Ron

14/11/2006 at 10:22 AM #7246
fd0
Guest
@rpedde wrote:

Yes, but I don’t know if the soundbridge will do multichannel wav files, or how one would convert it to a multichannel wav file.

But generally, add ac3 to the transcode codecs, and edit your transcode script to convert the .ac3 file to a wav file.

— Ron

Thanks Ron

Testing with mt-daapd/svn-1417 now

I added .shn and .ac3 :

extensions = .mp3,.m4a,.m4p,.flac,.ogg,.shn,.aac,.ac3
and
ssc_codectypes = ogg,flac,alac,shn,ac3

but this does not seem to work for .ac3 and .shn; it does work for .flac.

When a .ac3 file is added to the db i see the following in the log:
And for a .shn the following is in the log
The following shows when selecting a .shn file in iTunes
I hope this is of help

tnx
fred
16/11/2006 at 1:16 PM #7247

fizze
Participant

ac3 is a the raw multi-channel stream normally with 5.1 audio.

multichannel audio on a laserdisc used to be AC3 😉
and the DVD inherited that.

There are many multi-channel audio codecs, and I personally havent ever seen a WAV file with more than 2 channels. prolly thats just the RIFF/WAVE standard, though.

I too got many music DVDs that Id like to listen to in 5.1 over the soundbridge. I havent gotten around to buying a decent sound receiver though.
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