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View Full Version : Playing 5.1 channel Ogg Vorbis files


Strange_enough
3rd January 2010, 12:18
Hey,

I was wondering if its possible to play 5.1 ogg files through SPDIF (digital output). I have a few audio files and they are in 5.1 ogg format. Media Player and Winamp play these files fine but down samples them to stereo PCM format. AC3 and DTS files play fine without any problems. I use AC3 filter as my main audio decoding filter set.

Also if its not possible to play ogg 5.1 through SPDIF, is there any way to convert these files into DTS Wav? I could convert them to 448kbps AC3 5.1 ch but the quality is heavily compromised.

Would appreciate help.

Zee

nurbs
3rd January 2010, 13:09
You might want to read the rules (http://forum.doom9.org/forum-rules.htm), especially number 6.

Strange_enough
3rd January 2010, 19:42
Thanks Nurbs. I'll edit the post. But would appreciate if anyone can guide me how to play the files

tebasuna51
4th January 2010, 02:03
I was wondering if its possible to play 5.1 ogg files through SPDIF (digital output). I have a few audio files and they are in 5.1 ogg format. Media Player and Winamp play these files fine but down samples them to stereo PCM format. AC3 and DTS files play fine without any problems. I use AC3 filter as my main audio decoding filter set.

Also if its not possible to play ogg 5.1 through SPDIF, is there any way to convert these files into DTS Wav? I could convert them to 448kbps AC3 5.1 ch but the quality is heavily compromised.


Only AC3, DTS and PCM 2.0 can be passed by SPDIF, then other multichannel formats must be recoded on the fly to AC3 or downmix to PCM 2.0 .

Don't exist a way to recode on the fly to DTS.

BTW the ac3 448 kb/s quality is very similar to DTS 1536 kb/s. And if you use ac3 640 Kb/s you have a little more quality than dts 1536.

Strange_enough
7th January 2010, 22:06
Thanks Tebasuna.

Blue_MiSfit
9th January 2010, 21:44
You can use AC3Filter to transcode your Vorbis audio (or any source actually) to 640kbps AC3 on the fly for S/PDIF transport.

~MiSfit

Strange_enough
13th January 2010, 06:09
Pardon me for asking but what exactly does "on the fly" mean?

kypec
13th January 2010, 06:41
Pardon me for asking but what exactly does "on the fly" mean?
On-the-fly terminology here means that source audio stream (Vorbis in your case) is decoded and re-encoded immediately (to Dolby AC3 in your case) without any interim phase. No temporary file is created, nothing. Input data are just transformed to output data in another audio format and sent directly to S/PDIF connector during normal playback of your audio/video clip.