Convert A DivX with AC3 To VCD
Ok I've seen this question posted a lot lately so when I got my first DivX with AC3 I figured I'd list the steps in a quick users guide to help everyone else out.
What you will need:
VirtualDub: http://www.virtualdub.org
HeadAC3he: http://www.digital-digest.com/dvd/downloads/headac3he.html
Step 1:
Open the DivX AVI in VirtualDub
Under Audio make sure it's set to "Direct Stream Copy"
Go to File-Save WAV... (select a location then hit Save)
[what we're doing here is demultiplexing the AVI - we are seperating the audio stream from the video stream - by using 'direct stream copy' we do no ask VirtualDub to process the audio but just save it unchanged as AC3 to the hard drive]
I will name my file audio.ac3 --- VirtualDub will save the file as audio.ac3.wav -- find the file once it's done exporting and rename it back to audio.ac3
Step 2:
Close VirtualDub
Open HeadAC3he, hit the Source File button and find the exported audio.ac3 file (the one we just saved from VirtualDub)
Hit the Destination File button and make sure it's going to save it in the directory you want - a 70 meg AC3 will become a 600 meg WAV file so make sure you have space!
The default settings for HeadAC3he are fine - 2-Pass Mode / hybrid selected .... you can also resample to 44.1 kHz to make it easier on your VCD encoder
hit Start and wait (it should take about 3 minutes for 45 minutes of AC3)
thats it!
Now you have your original DivX and the AC3 audio mixed down to WAV
put them into your VCD/SVCD encoder and your ready to go
Question?
How do I know if the audio in my DivX is AC3 ... first it won't play in Windows Media Player and two it will come up in VirtualDub -- File-File Information as "unknown" see the example below
View
user comments or post your own comments/issues about this guide
here.
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