Channel Mapping in WMEncoder

Eastermeyer · 17th April 2006, 10:47

Hi !

I would like to test Microsoft's WMV-Format.
I am using the Windows Media Encoder.

If I would like to Encode WMA with 5.1 I have to use a Multichannel WAV File.

My source is a AC3-File and so I have to decode it to WAV.
I'm using BeSweet for this. In which order i have to write the WAV's to the .mux-File , to get correct Channel Mapping in the Windows Media Encoder ?

What quality is given by BeSweet ? 16bit ? 24bit ?

dohcmark8 · 17th April 2006, 15:02

You have to use seperate mono WAV files for WME... you cannot use one multichannel WAV in WME.

Set BeSweet to convert to six discrete mono WAV files and then fire up WME and choose custom session, then in the sources tab choose 'Multichannel WAV source' for audio and then hit configure... and in there you add the WAVs seperately, as long as you do it in the right order your channels will be in the proper order.

Eastermeyer · 17th April 2006, 16:02

Thanks !

Do you know what resolution AC3 got ?
16bit 24bit or 32bit ?

dohcmark8 · 17th April 2006, 16:19

AC3 should be 16-bit 48khz most of the time.

Eastermeyer · 17th April 2006, 16:32

Thank you very much !

diogen · 17th April 2006, 18:54

Quote:

Originally Posted by dohcmark8

You have to use seperate mono WAV files for WME....

To encode AC3 into WMA Pro (multichannel) you don't have to feed the encoder 6 mono WAV files -
just put AC3Filter in the graph and use AC3 soundtrack as is.
That is the way it works for me.

Diogen.

zambelli · 18th April 2006, 01:50

Quote:

Originally Posted by diogen

To encode AC3 into WMA Pro (multichannel) you don't have to feed the encoder 6 mono WAV files -
just put AC3Filter in the graph and use AC3 soundtrack as is.
That is the way it works for me.

That will work only if the AC3 decoder is decoding to 6 discrete channels. Not all of them do, certainly not on all setups.
BeSweet to mono .wav files is a fail safe method.

Kurtnoise · 18th April 2006, 06:16

There is an alternative...

NicAudio avisynth plugin + avs script + Nic's WMEncoder.

Something like that :

Code:

#NicDTSSource("E:\DVDVolume\VIDEO_TS\Sample.dts")
NicAC3Source("E:\Sample_6ch.ac3")

In this case, wav decoding is not needed.

For channels mapping, iirc this is the same pattern as WAV [FL, FR ,C, LFE, SL, SR].

17th April 2006, 10:47	#1 \| Link
Eastermeyer Happy Easter! Join Date: Aug 2005 Posts: 73	Channel Mapping in WMEncoder Hi ! I would like to test Microsoft's WMV-Format. I am using the Windows Media Encoder. If I would like to Encode WMA with 5.1 I have to use a Multichannel WAV File. My source is a AC3-File and so I have to decode it to WAV. I'm using BeSweet for this. In which order i have to write the WAV's to the .mux-File , to get correct Channel Mapping in the Windows Media Encoder ? What quality is given by BeSweet ? 16bit ? 24bit ? __________________ Sorry for my terrible English! I am from Germany.

17th April 2006, 16:02	#3 \| Link
Eastermeyer Happy Easter! Join Date: Aug 2005 Posts: 73	Thanks ! Do you know what resolution AC3 got ? 16bit 24bit or 32bit ? __________________ Sorry for my terrible English! I am from Germany.

17th April 2006, 16:32	#5 \| Link
Eastermeyer Happy Easter! Join Date: Aug 2005 Posts: 73	Thank you very much ! __________________ Sorry for my terrible English! I am from Germany.

18th April 2006, 06:16	#8 \| Link
Kurtnoise Swallowed in the Sea Join Date: Oct 2002 Location: Aix-en-Provence, France Posts: 5,191	There is an alternative... NicAudio avisynth plugin + avs script + Nic's WMEncoder. Something like that : Code: #NicDTSSource("E:\DVDVolume\VIDEO_TS\Sample.dts") NicAC3Source("E:\Sample_6ch.ac3") In this case, wav decoding is not needed. For channels mapping, iirc this is the same pattern as WAV [FL, FR ,C, LFE, SL, SR].

17th April 2006, 15:02	#2 \| Link
dohcmark8 Registered User Join Date: Feb 2006 Posts: 85	You have to use seperate mono WAV files for WME... you cannot use one multichannel WAV in WME. Set BeSweet to convert to six discrete mono WAV files and then fire up WME and choose custom session, then in the sources tab choose 'Multichannel WAV source' for audio and then hit configure... and in there you add the WAVs seperately, as long as you do it in the right order your channels will be in the proper order.

17th April 2006, 16:19	#4 \| Link
dohcmark8 Registered User Join Date: Feb 2006 Posts: 85	AC3 should be 16-bit 48khz most of the time.