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afterdawn.com > forums > digital video > video to dvd > aac to ac3
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AAC to AC3
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Excel2005
Junior Member
_ 		21. February 2005 @ 13:40 _ Link to this message    Send private message to this user   
I have a Matroska video with AAC MPEG2/LC audio. I want to convert the audio to AC3 to encode the video for DVD. Simply demuxing the audio using VirtualDubMod and encoding it with dBPowerAmp Music Converter (with the MP4/AAC decoding codec) doesn't work. What encoding programs do I need to extract and convert the audio?
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This message has been edited since posting. Last time this message was edited on 21. February 2005 @ 13:51
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ChrisHJW
Newbie
_ 		26. February 2005 @ 23:15 _ Link to this message    Send private message to this user   
You can extract the AAC audio from the MKV by using mkvextract from command line ( CLI ). Its coming with the mkvtoolnix 1.4.0 installer from http://mkvmerge.matroska.org

Easiest way, however, is to use TMPGencoder to convert video and audio from the MKV file into MPEG2 video and MP2 audio, TMPG has a built in MP2 audio encoder to do that, and MP2 audio is part of the DVD specs also.

Christian
matroska project admin
http://www.matroska.org
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http://www.matroska.org - support the future of free, x-platform and opensource audio/video container formats - visit us on irc.corecodec.com #matroska
Excel2005
Junior Member
_ 		27. February 2005 @ 04:51 _ Link to this message    Send private message to this user   
It's a shame that mkvextract doesn't have a dedicated GUI of its own. I'll be using mkvextract a lot since I use AviSynth to frameserve to TMPGEnc 3.0 Xpress. Thank you very much for your help anyway.
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This message has been edited since posting. Last time this message was edited on 27. February 2005 @ 04:55
ChrisHJW
Newbie
_ 		27. February 2005 @ 20:43 _ Link to this message    Send private message to this user   
Try this one : http://forum.doom9.org/showthread.php?s=&threadid=73819&highlight=mkvextract

Its a third party tool, but was reported to us as being quite stable and usable.

Christian
matroska project admin
http://www.matroska.org
[ + quote]
http://www.matroska.org - support the future of free, x-platform and opensource audio/video container formats - visit us on irc.corecodec.com #matroska
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Excel2005
Junior Member
_ 		28. February 2005 @ 07:19 _ Link to this message    Send private message to this user   
Thanks for that link too.
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Related links
Download the latest AC3 Filter from here. It's 100% freeware and you need it in order to play 5.1 DivX movies!
 
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