megui, avisynth and ac3

[aigle59]

Hello all

I want to recode a divx file in H264 one.

I have a video file like this:
xvid 1.0.2 video track
ac3 audio track


When i want to create my avs file after doing open file, save avsas , i have this error:
Avisynth script error
No compatible ACM codec to decode 0x2000 audio stream to pcm
c:\users\public\reencode\xxx.avs,line1

My avs file is :
aviSource("C:\Users\Public\Reencode\Ken.Le.Survivant.1x015.avi")
#deinterlace
#crop
LanczosResize(640,272) # Lanczos (Sharp)
#denoise

I tried to install satsuki decoder pack and k lite pack
nothing to do ...

other thing : windows media player and MPC are both able to play correctly the original divx file

Any idea ?

thanks

[setarip_old]

Hi!

It would likely be simpler and yield higher quality results, to use your original source material (presumably a DVD) to create an H264 version...

BTW - Why did you convert your original source material to DivX-compressed .AVI if you desire to have it as H264?

[~bT~]

install ac3 filter.

[Sharktooth]

yep, setarip_old is right.
however you can either install ac3 filter or any other VFW ac3 decoder.
another option is to use directshowsouce for audio...

[Atak_Snajpera]

I tried to install satsuki decoder pack and k lite pack
nothing to do ...
DO NOT INSTALL CODEC PACKS like K lite *****!
I suggest to use FFDShow or AC3Filter.

[Sharktooth]

Codec packs are EVIL(tm).

[naugas]

I had the same error message (No compatible ACM codec to decode 0x2000 audio stream to PCM) when trying to convert some .avi files with ac3 audio. When I try checking "Force Decoding via DirectShow" in the Nero AAC settings, nothing happens.

I'm using ffdshow video and audio directshow decoding, from the not-so-evil(...?) CCCP. Trying DirectShowSource in an .avs works fine, when encoding the audio in the same file.

Isn't the Directshow settings in the Nero configuration in megui working? Or do I need to configure the ffdshow audio settings in a certain way maybe?

[Sharktooth]

install ac3 filter.
the directshow decoding is for audio files. if you feed the audio input with an avs and the avs is using avisource you will need a VFW decoder.
CCCP is the ONLY codec pack that's not EVIL.

[stax76]

Or demux the AC3 file using VirtualDubMod and set audio to false in AVISource.

[naugas]

It would be very convenient to be able to encode these files directly, without more manual editing and/or decoding. Would it lead to any problems if the Nero directshow settings were to work on all directshow decodeable files instead of only audio?

[Sharktooth]

the problem is if you use an AVS with avisource(), AVISYNTH will use VFW decoders...

[tebasuna51]

Or demux the AC3 file using VirtualDubMod and set audio to false in AVISource.

Demux the ac3 is always the best choice, but I recommend AviMuxGUI and see the possible delay.

If the avi have a VirtualDub style delay when decoded in VirtualDubMod the ac3 begin with 0's to emulate the delay.

Next version of NicAc3Source can replace this 0's with the equivalent delay.

[stax76]

thx, looking forward to the next version.

[vassie]

Sorry to bump an old thread, I too am having problems converting an AVI with AC3 audio using MeGUI, whether I select the AVI or change audio to =true in the AVS script, MeGUI says it cannot open the audio track, I have changed AviSource to DirectShowSource, MeGUI can now open the audio track, but the final output is sometimes out of sync.