DGINDEX question .d2a files? avs, name, reference, question, anything

andy

When I run dgindex I get a .d2a file along with the demuxed audio. (same name as audio file)

What are the .d2a files used for (if anything)? From the instructions I have seen, I am only supposed to reference the .d2v file in the avs script, and I reference the demuxed audio track directly (the .mpa for mp2audio), if I want to run the sound with the avs script.

When making a template, if you use the __aud__ variable to reference the sound, it places the demuxed audio file into the place of __aud__ and not the .d2a file.

Is the d2a file used at all? Can it be deleted? is the information inside the file useful? (it seems to be 3 numbers usually for me)

Am I missing something in the instructions for the DGDECODE plugin? Is there a command that sould reference the d2a file directly?

Forgive me if I am asking something that is in one of the manuals or help files, but I cant find anything.

Gosh, I never saw a .d2a file come out of DGIndex. Please tell us how you make DGIndex create a .d2a file.

Are you maybe using DGIndex with a third-party tool, like DVD-RB?

I am originally capturing tv with Avermedia (ultratv)(card is avermedia1500mce-software comes with card). It creates an mpeg2 720x480 29.97 (us-ntsc tv capture), with the audio captured as mpeg2. I think this is also refered to as mpa. All I am doing at that point is opening the file in DGindex 1.4.6, I have demux all tracks selected and I save the project. Maybe this is being created as another track? Something recorded into the file by capture software? It just looks more like something from dgindex since the video info is called .d2v

my template file is simple:
loadplugin(quot;D:\AviSynth 2.5\plugins\DGDecode.dllquot;)
LoadPlugin(quot;D:\AviSynth 2.5\plugins\mpasource.dllquot;) #req for mpasource plugin
V=MPEG2Source(quot;__vid__quot;) #req for mpasource plugin
A=MPASource(quot;__aud__quot;) #req for mpasource plugin
AudioDub(V,A)
#end template file

Name of demuxed audio track:
Composit_0304_190836 T01 DELAY 0ms.mpa

Name of .d2a file:
Composit_0304_190836 T01 DELAY 0ms.mpa.d2a

The .d2a file has this inside:
241012800
3305318400
0

You know I have only noticed these files recently, and I have been recording from some vcr tapes using the composite input of the capture card. I wonder if that could have something to do with it. I will have to do a few test recordings and see if I can narrow down where it is coming from.

.d2a files are not created by DGMPGDec.

ok,
I checked and the file is not created by dgindex. It is created by Virtualdub when opening the avs file.

I didn't look into it any further. Maybe I'll post in a vdub forum.

Was just weird that the extention is d2a while the dgindex extention for the video stream is d2v.

I am guessing that the file contains basic info on the audio stream like size and skew/offset but I have not had a chance to really check it yet. I was just worried that I was missing some feature of dgindex.

thanks for feedback.

-although now that I think about it, maybe it is created by the mpa plugin that the avs script invokes (which I am only seeing after vdub starts up the avs script). I need to run the avs in something else and see if file is created. I'll read up on the mpa plug in too.

-edit yeah, I checked by running script thru mediaplayer classic, and d2a file is created again, so must be the mpasource plugin for avi synth. I'll look for that.

The .d2a files are created by the mpasource plugin. I can't remember exactly what purpose they serve, but I have a faint idea it holds parameters for normalisation to avoid having to scan the whole audio stream every time the script is opened. I may be completely wrong though.

Wiping some dust here, but because this thread looks like a quot;best matchquot; hit:

NicAudioSource contains MPASource too, therefore this question re-appeared now in the german /Gleitz board.

According to the source files included in NicAudioSource 2.04, it seems to be used for normalizing the volume...