mirror of
https://git.FreeBSD.org/ports.git
synced 2024-12-12 03:00:28 +00:00
25 lines
885 B
Plaintext
25 lines
885 B
Plaintext
[ excerpt from developer's WWW site ]
|
|
|
|
A multi-channel MPEG encoder, using the ISO13818 standard and the
|
|
dist10 source code. Multi-channel files may have up to 6 defined
|
|
channels: Left(L), Right(R), Center(C), Left Surround (LS), Right
|
|
Surround (RS) and a Low Frequency Enhancement channel (LFE).
|
|
|
|
ISO13818 defines 5 multichannel modes (on top of the normal stereo
|
|
mode), each of these modes may have an optional LFE channel:
|
|
|
|
3/2: L, R, C, LS, RS
|
|
3/1: L, R, C, mono surround
|
|
2/2: L, R, LS, RS
|
|
2/1: L, R, mono surround
|
|
3/0: L, R, C
|
|
|
|
The "standard" surround sound encoding of "5.1 channels" is achieved
|
|
by using mode 3/2 plus an LFE channel.
|
|
|
|
A multi-channel MPEG file should decode OK on any MPEG decoder. If
|
|
the decoder doesn't recognize the multi-channel extensions, then
|
|
you'll just get a stereo file containing a down mix of the 5 channels.
|
|
|
|
WWW: http://www.planckenergy.com/
|