Cannot sound surround with ac3 files

Hello,
I'm trying to play ac3 format movies (which I downloaded), at my DVD
player (sonic k250) which suppose to support ac3 format (and 5.1
channels), but my reciever only finds two channels (stereo).
What can be the problem?!
I tuned the dvd on playing 5.1 channels and i'm using optical port.
When the DVD plays the ac3 format movies, the reciever does detects
dolby digital but only finds two channels...

Can it be that the movies (2) I downloaded so far has only 2 channels
included (though written ac3)?

Please help, I got three speakers just hanging on the wall...
playing... hmm... nothing.

efsh2000@gmail.com wrote:
> Hello,
> I'm trying to play ac3 format movies (which I downloaded), at my DVD
> player (sonic k250) which suppose to support ac3 format (and 5.1
> channels), but my reciever only finds two channels (stereo).
> What can be the problem?!
> I tuned the dvd on playing 5.1 channels and i'm using optical port.
> When the DVD plays the ac3 format movies, the reciever does detects
> dolby digital but only finds two channels...
>
> Can it be that the movies (2) I downloaded so far has only 2 channels
> included (though written ac3)?

Almost certainly. AC3 (on the computer, at least) is a compression
scheme, and can be used for two channels just as well as six. To make
..avis (which is what I assume you're downloading), most people tend to
convert the soundtrack to two channels.

Apart from (get this) BUYING your movies, the only possible solution I
can think of is to only DL .iso files of the full DVD, so you'll have a
greater chance of having the 6-channels soundtrack on there.
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