LPCM is the method of lossless encoding of audio data in the compact disc. Some DVDs (mainly music DVDs) may contain an uncompressed LPCM (same as raw) stereo soundtrack. The lossless stereo track, compared to lossy AC3 or DTS soundtrack, would sound better with the stereo amplifier.

However, when you want to convert a concert video DVD with LPCM audio track to other video format like Xvid and meanwhile avoid re-encoding the audio tracks in order to preserve the original audio quality, you may find almost all of the Xvid video converters will convert the audio track into AC3 or MP3, though some may support direct passing through of AC3 or DTS, but not LPCM.

So is there any Xvid video converter allowing direct LPCM audio passing through? Or what’s the best way to achieve the target? I haven’t found a good program to do this work in one step but there is indeed a good solution needing a few free programs to work together to finish the task.

1. Demux the LPCM audio from the DVD.

If the DVD is in the DVD-ROM drive, set DVD Decrypter for IFO Mode, go to the Stream Processing tab and set it to demux the audio you want.

demux audio in DVD Decrypter

If the DVD is already ripped to the hard drive using a DVD ripper, you can load the VOBs into DGIndex and save the project file out to get the audio stream.

save project to get audio steam

2) Convert the DVD to Xvid file using a DVD to AVI converter like  AutoGK or StaxRip.

3) Load the converted Xvid file to VirtualDubMod; then add the LPCM audio to the Xvid file and remove the existing audio, which should be done in the following: VirtualDubMod/Streams/Stream List, right-click on the stream and go to Full Processing Mode.

4) Save the new AVI format file using “Direct Stream Copy” mode in VirtualDubMod and you’ll have the Xvid video and LPCM audio in an AVI container in a few minutes.

If you have any suggestion to better do the work, please share with us by leaving comments.

add audio track to video, demux audio, DVD Decrypter, DVD to Xvid, DVD to Xvid without converting audio, LPCM, preserve original audio quality, soundtrack, VirtualDubMod