Marinos - I havent a clue what a nitrate is but maybe kbs and i seem
to remember my options
in Apack being limited so i just went for the highest as ac3's are small
On 29 Nov 2011, at 21:13, Marinos Koutsomichalis wrote:
thx Mick
I think I' ll go down the ac3 road - not shire however what nitrate
to use.. would sth like 640 for a 4-channel file be ok ??
thx
m
On 29 Nov 2011, at 21:48, mick ritchie wrote:
Hi marinos
i missed the bginning of the debate but I went down this road 3
years ago to stream bformat files
For your requirements with 4 channels of discrete speaker files I
think ac3 is by far the most accessible
to anybody who has no 4 channel sound card - a digital link
between computer and home ents system and you have
4 speaker playback without any tweaking. Go for the highest spec
as they are a bit limp and I remember adding 2 channels of audio
silence to ensure all players see the same thing - also some
players like vlc need a good one second start before theyve
communicated youre in dolby digital to the decoder and you can
miss the first note.
For streaming with bformat or 4 channel files I found ogg files
to be the best quality and I also had grief with VLC - first they
worked then after a week they crashed VLC over and over again - I
just tried a couple of them and now VLC doesnt read them at all -
something about XoX files not being good whatever that means.
I just looked online for any developments and came across many
problems including my 2008 request that went unanswered. What I
did find though was that by making a QTmovie ref file to the ogg
file I could then stream in QTPlayer and Itunes(which doesnt
accept Ogg) that was what i used. The QTref file allows you to
ensure the correct track allocation which ther Ogg alone wouldnt
do. I didnt have time to test with all players and just
recommended Quicktime which most PC users have
Now I can stream a 4 channel FLAC up to a point but FLAC was my
preference for download - this was fine in VLC and easily streamed
through a bformat decoder.
AAC looks interesting now and ive got some binaural experiments to
do this week and will try it for some 4 channel while im at it.
I use audacity to make my multi track files
best
mick
On 29 Nov 2011, at 00:18, Marinos Koutsomichalis wrote:
thus far:
- I tried ac3 and it seems ok to me - VLC can playback with no
problems
- I haven' t yet managed to encode to AAC - I get an error that
libfaac is missing when using ffmpeg and audacity refuses to find
the proper library - still looking for some other encoder
- I easily encoded to flac with sox but the size is huge and thus
totally inadequate for my purposes
- ogg vorbis encode fine with sox but VLC crashes..
so 2 questions:
1. what are the right settings for a HQ quad ac3 ?? I used 44.100
and 192k which sounds ok - but then I don' t have very good
speakers to be sure - let aside the file is pretty small which
means I can afford higher nitrates
2. What' s the verdict of an aac vs ac3 comparison ???
On 29 Nov 2011, at 00:12, Marinos Koutsomichalis wrote:
oh yeah I did encode them and they did seem file - but I could
not play back them..
it was pretty easy to encode actually..
I google it a bit and there are a couple of bug reports about ogg
+video problems - so there seems to be some problem
m
On 28 Nov 2011, at 23:01, Eero Aro wrote:
Marinos Koutsomichalis wrote:
I tried encoding to 4 channel ogg via both sox and audacity
and VLC crashes when I try to playback for some reason,
Hmm.
I have used the encoder in the past and it worked ok
and the files played fine. Sorry, but can't remember
if I had any troubles in using the encoder. It could have
been possible that I had to to rename the two
stereo files in the same way as the Zoom H2 names
them.
Did the software encode your files anyway? Did you
get to that point?
Eero
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Music Research Center, University of York
Contemporary Music Research Centre (CMRC)
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Music Research Center, University of York
Contemporary Music Research Centre (CMRC)
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