PDA

View Full Version : Audio Help

JarrettH
5th January 2006, 18:59
I'm trying to encode two DVDs to XviD using MP3 audio. The tracks on the DVD use AC3 192kb 2ch originally. I can encode the video fine, but no matter what I do I can't get any audio to encode. I have my d2v file and this script to import the VOB

LoadPlugin("C:\Documents and Settings\Administrator\My Documents\Software\DGIndex\DGDecode.dll")
mpeg2source("C:\Documents and Settings\Administrator\Desktop\Curb Season 4\Disc1\VTS_01_1.d2v")

I've also installed AC3 ACM decompressor 1.2. I want to make the AC3 track into MP3 audio to save space. When doing 2nd pass there's no audio data in the status window. I know the VOB contains audio because I checked with GSpot and played it back on Media Player Classic. If I just use source audio with direct stream I still get no audio.

I know I could easily do this with VdubMOD, but I want to figure this out with Virtualdub! :devil: I could also convert the AC3 to WAV then use full processing to compress to MP3 right but there SHOULD be an easy way to do this.

Thanks guys :D
Skelsgard
7th January 2006, 23:47
VirtualDub does not have AC3 support, just VirtualDubMod.
setarip_old
8th January 2006, 03:33
@wonderbra

Hi!

VirtualDub will accept .AC3 for input and generate .AC3 output if you install the AC3 ACM codec...
JarrettH
8th January 2006, 03:58
If I have AC3 2ch 192kb and choose that in the compression will it just leave the stream alone?
setarip_old
8th January 2006, 04:04
It should, if VirtualDub's audio output is set to "Direct Stream Copy"...
JarrettH
8th January 2006, 04:17
i still don't get audio data in the status window if i do direct stream copy
setarip_old
8th January 2006, 05:10
I've also installed AC3 ACM decompressor 1.2Are you sure it's installed? As an experiment, just open VirtualDub, click on the "Audio" dropdown menu and select "Compression". Does the "AC3 ACM Codec" appear in the list? If you put a checkmark next to show all formats, does a list of AC3 formats appear in the right-hand window?
JarrettH
8th January 2006, 05:19
Yep it's there. Stereo, 3/0, 3/2, 5.1, etc

I tried to do full stream using 48,000hz, 192kb, stereo AC3 and I still didn't get audio data. Is there something extra I need to do in the avisynth script?
Skelsgard
8th January 2006, 05:29
VirtualDub will accept .AC3 for input and generate .AC3 output if you install the AC3 ACM codec...
My bad. Iīm so used to the external tools, I forgot about the ACM codec. Sorry.
I think I havenīt used an ACM codec for at least 2 and a half years now. God bless external audio and container tools!!.