Combine AVI's with different # AC3 channels

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Combine AVI's with different # AC3 channels

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nicksad

Newbie

14. September 2005 @ 02:09

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I have 2 AVI's I'm trying to join. The video is XviD. The audio is AC3 448kbps 48khz CBR in both files. However, according to both GSpot and AVIcodec, one file has 5 channels and the other has 6 channels. VirtualDubMod can't append them because they have different numbers of channels. What is the simplest way to get these two AVI's combined.

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aldaco12

AfterDawn Addict

14. September 2005 @ 05:58

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There's no 'simple way' I know.

I only could suggest this: transfom the AVI which has 6 channels in an AVI which has 5+1 channels (or transform both AVIs into new AVIs with MP3 CBR sound [but you'll lose the Dolby Surround audio, if you have surround speakers in your home DVD plant])

1) Open, with VirtualDubMod, the AVI file which has the 6-ch audio stream;
2) Extract from that AVI the 6-channel AC3 stream (Stream___Stream List__Demux);
3) (this I cannot teach how to do) Convert the 6-channel AC3 stream into a 5+1 stream;
4) Replace the 6-ch with the 5+1-ch stream. Just do, in VierualDubMod:
4.a) Set Video___Direct Stream Copy (video must be kept the same)
4.b) Do Stream__Stream List. Disable the old one, Add the new one.
4.c) F7 [File__Save As...]

If you make MP3 CBR you have to click the 'Options >>' button twice, until you see a screen which leaves you to select Preset = Alt CBR, Mode = CBR, instead of the default MP3 ABR (better for compressing audio, but uses Average Bit Rate, a form of Variable Bit Rate, which causes un-sync in the AVI --> MPEG conversion; probably, if your player can directly read AVIs, this is not necessary).

Sorry, but my DVD plant has no surround speakers and I never learned to make AC3 sound (I use MP2 sound streams, instead).
I hope you can find an easy guide which can suggest you a smart audio application....

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This message has been edited since posting. Last time this message was edited on 14. September 2005 @ 06:06

nicksad

Newbie

15. September 2005 @ 19:11

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Thanks for your reply. I think I'll follow your advice about the mp3 as I don't need the surround sound anyway.

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aldaco12

AfterDawn Addict

16. September 2005 @ 04:05

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Ah, I just found that I wad describing an aplication and I didn't tell you which was it: use HeadAC3he [ http://mitglied.lycos.de/darkav/ ].
Sorry....

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