ac3 no sound

[guy24s]

I want to do the following:

1. Demultiplex a VOB to elementary streams so I get a MPV and a AC3 file.

2. convert a WAV file into AC3 and replace the original AC3 with it.

3. author a DVD and get the videofile to play with the new AC3 file i created.

I've done all this but when i play the authored DVD there's no sound.

I'm using DVD-lab to Demultiplex the file, Ffmpeggui to convert from WAV to AC3, and DVD-lab to author the DVD. I can't use any other authoring software than DVD-lab, as it is the only software that reads my VOB files, all other authoring software has refused.

I'm very new to this, any ideas of what I could be doing wrong that causes the sound to not work?

[XooL]

Do u have ac3 filters installed on ur computer??

[guy24s]

i don't know, not that i know of at least, unless they were installed automatically along with some other software...

what are they for and where do i find them?

[turk690]

There are (free) programs specifically for ripping and demuxing DVD *.vobs, such as SmartRipper, DVD2AVI, VOBrator, and VOBedit, to name a few. While DVD-Lab does accept *.vobs the manner it demuxes is designed for its own authoring engine and may or may not produce valid standalone *.ac3 files (or *.m2v, for that matter). As for encoding *.wav to *.ac3, try BeSweet also. On acquiring the *.ac3 file it pays to test first to see if it sounds OK before submitting to the DVD-authoring program. To do this there should be an ac3 dll in your system which automatically gets installed along with a DVD-player program (such as PowerDVD, etc.), or by installing dedicated filters (and associating with, say, Windows media player) that can be found on the tools>audio encoder section of this site.

[Poppa_Meth]

just click on AC3 Filter and download and install it.

[OkAtanAdam]

Chances are that your AC3 file does NOT comply to the DolbyDigital standard...

Try SonicFoundry's (Sony) SoftEncode or Vegas4 to do your DD Certified AC3 Encoding...

Also, do a bit of reading at Dolby's WebSite...
http://www.dolby.com/digital/

[guy24s]

thanks guys,
i got the ac3-files working now!