ac3 demuxing a difficult problem.need experts

[giannisKM]

hi guys i usually try to fix all my problems on my pc alone. thats why thats my first post here. the site helped me a lot and now i m having a prbm that i cannot fix.

here is the prbm.
i have installed
ac3filter_0_70b
XviD-1.1.-127-13102004
lame mp3
some stuff from Nimo50Build9Beta1
not all. just these i needed
latest ffdshow
and avisynth 2.55


the prbm is when i try to demux ann ac3 sound from an avi.
File : 1.35 GB (1.35 GB), duration: 1:51:04, type: AVI, 1 audio stream(s), quality: 76 %


Video : 1.4 GB, 1348 Kbps, 25.0 fps, 640*320 (2.0:1), XVID = XVID Mpeg-4, Supported

Audio : 305 MB, 384 Kbps, 48000 Hz, 6 channels, 0x2000 = AC3 DVM, Supported


i demux with VirtualDubMod -->stream-->stream list -->demux

when demuxing is over the file is not ac3 at all
its not even a music file.
AVIcodec and GSpot dont recognise it
when i drag drop it on TMPGEnc DVD Author 1.6 to make a dvd
i get this error





on DVD-lab PRO i get this strange one





and the final resault from avicodec is this

File : 305 MB (305 MB), duration: 0:00:00, type: DSH, 1 audio stream(s), quality: 72 %

Audio : 305 MB, 384 Kbps, 48000 Hz, 6 channels, 0x1 = MS PCM, Supported


here i must say that the same prbm is with all my avi vids with ac3 sound.
i allreaddy have reinstall all codecs ffdshow and everything 3 times



hope someone can help me.
the prbm started when i first removed my codecs and i reistalled them cause
Subtitle Workshop
wasnt loading my avi files.
all strange prbms hapened to me


ps after dvdlabpro "fixed the ac3" the file lost 1 kb only

[guns1inger]

And did it load ?

You could also try AC3fix to repair the headers. Basically, it looks like a poorly encoded or subsequently corrupted AC3 audio track. If it can't be repaired, then there isn't much you can do. The hazards of downloading.

[celtic_druid]

I'd suggest AVIMuxGUI for demuxing.

You downloaded a codec pack because you wanted AVISynth and ffdshow?
AVISynth download: http://www.sourceforge.net/projects/avisynth2/
Info on new ffdshow builds (mine and others): http://forum.doom9.org/showthread.php?t=98600&goto=lastpost

[giannisKM]

how does avi mux demux the audio only?
can you give me a link for that?
and the codec pack i installed it for other stuff not ffdshow and or avisynth

guns1inger And did it load ? You could also try AC3fix to repair the headers. Basically, it looks like a poorly encoded or subsequently corrupted AC3 audio track. If it can't be repaired, then there isn't much you can do. The hazards of downloading.

i hust want my ac3s to come out ok not with prbm and then fixing the prbm.