[vorbis] Finding a native Ogg trim, fade & nomalise tool

jkmuir jkmuir at trentu.ca
Tue Oct 1 12:53:44 PDT 2002



My specific interest lies in a project which involves the
digital ingest of about 13,000 CDs, 8,000 LPs and various and
sundry other tape and disc formats into a online intranet
resource for programmers at non profit community radio facility.

The tests of the codec were very satisfying, and for all the
reasons spelled out on the http://www.vorbis.com site. We are
excited at the prospect of using a non-proprietary codec in our
non-profit organisation.

Our problem is that we really want to get it as good as we can
the first time around. While we do plan on keeping all the audio
materials, once an item is digitised, we hope it will be a long
time before the original is dug up and re-encoded. And we
believe it would be wise for us to avoid "transcoding" if at all
possible.

The rough outline of the plan is to use Win98SE with
Audiograbber and the Ogg codec system to make analogue recordings
and rip the CDs .

The resulting ogg and associated files (meta date, such as  text
& graphics) will reside on a network attached server, with
perhaps a SQL application running on an independent  cpu to
handle searches from other workstations on the LAN.

The one tool which doesn't seem to exist yet for the Ogg format
is the equivalent of something like MP3Trim,
http://www.logiccell.com/~mp3trim/
which provides a convenient method of trimming,  normalising and
fading MP3 files with the need to decode and reencode.  I have
tried VCut, but it behaved in a way which I did not understand,
and did not seem to work at all with a Variable Bit Rate Ogg
file.

I would very much appreciate finding out if there is such a tool
which can be used like MP3Trim, or if someone is working on one.

I know there are number methods to trim and normalise a wav file
prior to it being encoded, but its would be better to be able to
manipulate audio once it is the ogg format as well.

Without this tool or some hope that some method to provide these
functions will come into being in the next few months, we will
not be able to commit to the Ogg format.

Would it be any incentive to announce that we would we would
make a donation ($100) to the Xiph.org Foundation and tell our
listeners to to do the same, while producing and airing radio
programmes about the work of the foundation?  Maybe even pass it
on to other community radio organisations?

All the best // John

http://www.trentradio.ca

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