Converting DVD video and re-map audio stream to L/R channels

[iammcse]

Are there any programs that convert DVD contents to media format such as WMV, AVI or MPEG4 etc. and also able to map the audio streams (0x80, 0x81) to Left and Right channels to the new converted format? Is there any straight forward program that I can use?
For example, 0x80 to the Left channel and 0x81 to Right channel
NOT MIXED

The reason I do this is to convert a DVD Karaoke disk to local files in the Hard drive so that the PC Karaoke system can play and able to switch voice and no voice by choosing L/R channels.
The program or scripts that I am looking for should first able to rip the DVD into chapters and then map the 2 streams to Left and Right channels respectively (not mixed) and output the video format I desire. I prefer WMV and MP4.

I have few hundreds DVD (>6000 songs) to convert plus more coming, therefore I must need a very efficient way to complete the mission.

[celtic_druid]

You could frameserve with AVISynth. It can load various audio formats and remap channels.

[iammcse]

Is it one step process or I have to spend more time to assemble this video and audio again ?

[celtic_druid]

Few steps.

1. Rip DVD.
2. Run through DGIndex, demuxing the audio if you haven't already.
3. Frameserve video and audio with AVISynth which can downmix the audio to mono and create a stereo source from the two.

[iammcse]

Thank you for your quick response!
It takes too much time. I have 300 DVDs to convert and I have to hire a person to do it, the techiques you mention required computer trainnings and I am looking for any commercial or free software like WINAVI that do one step process.
I would also pay to anyone who can write a scripts that so the job properly.

[iammcse]

I forgot to mention. I need to map streams (0x80, 0x81) to Left and Right channel respectively not to mix.

For example, 0x80 to the Left channel and 0x81 to Right channel

[celtic_druid]

I know that.
I meant using MergeChannels().

Don't confuse this with mixing of channels (MixAudio and ConvertToMono do this) - the sound of each channel is left untouched, the channels are only put into the new clip.

But before you do that you need to use ConvertToMono() to merge all the channels of 0x80. NicAC3Source("0x80.ac3", 1) should have the same effect though.

So:
video = mpeg2source("video.d2v")
l_ch = GetChannel(NicAC3Source("0x80.ac3", 1),1)
r_ch = GetChannel (NicAC3Source("0x81.ac3", 1),1)
stereo = MergeChannels(l_ch,r_ch)
AudioDub(video, stereo)

or something to that effect. You can then just encode the avs in wmencoder or whatever. You probably also want to resize. Once you have a template script, you can use it with DGIndex.

[iammcse]

Thanks for your valuable advice .. I will try that later and hopefully it works.