Hi friends,

First of all thank you for you great effort! I am not used to this kind of testing on development projects, and so please correct me if I am tracking badly this bug or message, or this is not the appropiated place.

I'm using last oggenc exe from vorbis-tools 1.2.0 (win32 binaries)349K 530f79112f5a12f60a878ebd62013521 from your web and I am facing some problems.

I'm doing some tests with different combinations of sampling, #channels and bits, using the RAW mode as in

$> oggenc --raw --raw-chan=2 --raw-bits=16 --raw-rate=44100 --quality=4 --output=44-2-16.ogg 44-2-16.wav

I tried to compress samples of following combinations of the same analog source of music: 44-2-16,44-2-8, 44-1-16, 44-2-8, 22-2-16, 22-2-8, 22-1-16, 22-1-8

First of all I don't know why, encoding any 16 bits stereo sample in raw mode swaps audio channels in my output file. I mean, if a guitar plays in the right channel in the original wavs, its still there when I convert from 8 bits, but swapped after doing it from 16 bits. That does not occur if I use oggenc -q 4 instead, but not with --raw specs (exactly as described above).

Secondly, I don't understand why if ogg detects automatically input channels, sampling, etc., and it seems so because files are differing in just some few bytes, why aren't outputted files identical whether I use spec'ed raw inputs or average behaviour?

And last of all, is it normal that having the original source coded in 8 bits or 16 does not affect the size of the compressed output? I mean, same audio source coded in mono or a half of the sampling freq reduces a lot the outputted ogg, but is not the case when switching between 16/8bit samples, which are really half/double the size.

I tried reading wiki and everything, hope this questions are not really covered with an obvious explanation somewhere and so they are not bugs.

P.S: I used Windows soundrecorder for generating initial sampled and then reopened and saved the file according to every different bit/channel/sampling combination (all outputs have coherent size, reduced by 2 for any 44->22 or stereo->mono or 16bit->8bit factor).