You want to use import & export components for your job, not conversion
components. Check out the "qtdataexchange" sample in the Importers and
Exporters directory of the QT sample code. QTDataEx.exe is a windowed app
that does what you want, plus more. For your console app, just haul out the
pieces you want from QTDataEx.c. In there you'll find lots of very useful
routines, including routines to get & save exporter settings into files,
very cool for no-user-intervention console apps.
Ken
-----Original Message-----
From: email@hidden
[mailto:email@hidden]On Behalf Of Mark Lewis
Sent: Monday, December 08, 2003 10:22 AM
To: 'email@hidden'
Subject: 44kHz 16-bit WAV to Quicktime
Hi
I am new to Quicktime coding and struggling with something that I imagine
should be relatively easy. I am attempting to write a Win32 console
application to transcode 44kHz 16-bit sampled WAV files to a Quicktime
format (been using mov till now), and ideally set some kind of compression
rates along the way.
I can compress WAV files (by changing the sampleRate and sampleSize of a
conversion component), I can also easily convert wavs to movs, but to do the
'two-step' compression and conversion (or conversion then compression)
process seems impossible, I always end up with a transcoded, but now
uncompressed, file! What am I doing wrong? I even tried deleting the
original file half-way, to ensure there weren't data references in the
temporary middle compressed(or transcoded) file to the original file, but
that didn't help (or even throw an error as I'd expected), it seems that
there is some header info related to the original files size that
compressing or transcoding a file doesn't change?
Thanks
Mark
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