2 channel audio to 5.1 channel

[murdertrk]

Hey,
I want to create an archive of 720p-1080p video collection. My mother tongue is Turkish, that's why I archive my films as DUAL releases which both contain Turkish and English sound streams. I sometimes download the normal releases and find the proper sound for the film. The problem is, Turkish sound stream sometimes contains 2/0 channels, which I dont prefer because 5.1 sound is far better than 2.0

I read that those 2/0 streams can be converted to 3/2/1 by


demuxing original 5.1 audio stream into 1-by-1 channels
encoding the stereo dubbed sound to mono channel wav
replacing the mono sound with center channel of 5.1
re-ripping the new channels to 5.1


I need your help on how to do this. I tried using besweet but it was the most complicated program ever I have used.

[Asmodian]

While you can convert stereo to 5.1 it won't be far better than the original 2.0.

I would do this during playback rather then during encoding. You would just waste bits storing an extra 3 channels.

If you do want to do the conversion you could use eac3to to do it.

getting the single track wavs is a easy as:

eac3to input.pcm output.wavs

Oops, I just noticed you are actually "changing" the language of the (I assume) English 5.1 track to a Turkish center with the original English side+rear tracks. While I imagine that works pretty well much of the time it could be quite bad too. Often the center channel is meant to be missing a lot of the sound which would be present in the Turkish audio. Also while most of the dialog is in the center channel, not all of it is, and the timing is usually not exactly the same between different audio tracks. It could get very odd.

I would still start with eac3to, but there might be a better tool for this. I don't think eac3to offers a mix stereo to mono option for that step but you can do the rest of it with eac3to.

[SallyDog]

Try this:

www.surroundbyus.com/

[manioxy]

Connect with the same 2 interconnects but set your receiver to apply DolbyProLogic or dts Neo to expand it to 5.1.

[fryk]

Look here:

upmix with sox (http://forum.doom9.org/showthread.php?p=1385091#post1385091)