I am a
windows programmer and I was trying out all the audio components to
encode to QT audio , given a audio samples. Every other sound
converter
Works but
the QDesign Music 2 converter. It creates silent
audio.
Why does the
sound converter QDesign Music 2 encode silent audio. What else needs
to be set for this audio?
For all the
other sound converters I am setting the sample rate, audio sample
size, channel count, and the scCompressionTpye. It works for every
other sound converter
then why not
with QDesign Music 2 audio converter.
The QDesign encoder, as well as some
of the other encoders, requires that a 'magic cookie' be provided to
give additional information about the encoding style. The
easiest way to construct the information needed to correctly configure
the AudioConverter for all known audio compressions is to use the
QuickTime StdAudio component. There is plenty of documentation
and sample code on the Apple developer website.
Daniel Steinberg
QuickTime Engineering
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