AC3 Header Fix with BeSplit

[sjaak]

Forgive me for sounding like at total noob, but I'm a little stuck with something. I'm trying to convert a high resolution hdtv xvid with AC3 5.1 to a dvd. I'm using TMPGEnc 3.0 Xpress, which sadly only handles 2 channel AC3 files. Now I decided to split the original audio and video, decode the video to dvd and then later join the decoded video with the original audio again. I used VirtualDub to extract the audio which it saved as a .wav. I've read on videohelp.com that I had to use BeSplit to fix the header, so I downloaded BeSplit. There comes the problem though, I have no idea how to use a command prompt. I got BeSplit to load, after some tries, I have the example command line, but I don't know how to enter all the appropriate values like where it can find my .wav etc. Anyone who can help me with this? The file is located at D:\path\file.wav.

[setarip_old]

Hi!

1) Instead of VirtualDub, use VirtualDubMOD (set "Video" to "Direct Stream Copy") to demultiplex and save the audiostream as 5.1.AC3 - and save the video as a silent XviD file

2) Use TMPGEnc 3.0 Xpress or TMPGEnc to convert the silent XviD video to DVD-compliant MPEG-2 format

3) Load both the video and audio into "TMPGEnc DVD Author" and create your DVD. You can obtain a FULLY functional free 30 day trial version of this commercial program at:

www.pegasys-inc.com/en/product/tda.html

[sjaak]

Thanks! How do I save the audiostream exactly? I'm not able to find that option in the menu.

EDIT: Did some searching online, found out that I need to the demux audio option, still not able to find that though.

[setarip_old]

Click on the "Streams" dropdown menu and then click on "Streams list"...

[sjaak]

Thanks, everything works now :)

[setarip_old]

Thanks, everything works nowMy pleasure ;>}

[Kriz]

Since this is a BeSplit topic, I'm gonna hijack it. ;-)

I'm trying to fix a wav file I ripped from an AVI (it's mp3 inside the avi, if that makes a difference) with VirtualDub as per this guide: http://www.doom9.org/virtualdub_procedures.htm#ac3extraction

When I drop the wav in BeSplice, and choose "AC3", it comes out as a 0Kb file. When I choose "wav", it comes out normal.

If I choose wav, and run that "fixed" wav through besweet, would that fix it? Or am I not understanding this correctly?

[planet1]

IMHO AVI Mux GUI is the ideal solution (in terms of being reliable and fast) when it comes to audio extraction from AVI - at least for the most prominent formats like mp3, ac3 and dts.

The result won't be a stream encapsulated into WAVE but a "pretty raw" output.

Using ffmpeg / VLC for exotic formats like Vorbis and WMA inside AVI could work.

[tebasuna51]

I'm trying to fix a wav file I ripped from an AVI (it's mp3 inside the avi, if that makes a difference) with VirtualDub
To extract a mp3 from a avi use VirtualDubMod with:
Streams -> Stream List -> Demux
When I drop the wav in BeSplice, and choose "AC3", it comes out as a 0Kb file.
Of course, inside the wav container there are mp3, not ac3.
BeSplit can't transcode mp3 to ac3.
If I choose wav, and run that "fixed" wav through besweet, would that fix it? Or am I not understanding this correctly?
What do you understand for "fix"?
Fix a ac3 is eliminate corrupted frames.
Fix a wav is correct the filelength field (in wav header) with the actual length.

[Kriz]

I was reading the guide incorrectly then.

thanks for clarifying that.