I apologize in advance for the long messages.
I'm on a major time crunch trying to get QT output
working for VloggerCon, and would greatly appreciate some help!
Since
I originally sent this message the other day, I've been playing with the
MovieExport component. I've been using qtmoviefromprocs.win as a guide
mainly for the the aduio and video PropertyProc function.
However, I have not been able to get MovieExportFromProceduresToDataRef to
work with any and or no compression. I'm confused and can't find any
doc's explaining the PropertyProc function. Exactly what parameters
need to be returned in the PropertyProcs? I assume these are
source/input parameters?
Also,
at the time our app displays the Publisher UI and where I
call MovieExportDoUserDialog, I don't have a movie obj yet, so I'm creating
a dummy movie and tracks, and keeping the QTAtomContainer to configure
the MovieExportComponent later when we render out the movie. Do I
need to pass in the actual duration and not that of the dummy movie?
Are the any othe problems in doing this?
So,
now I'm tempted to go back to using the ICM method. The problem with using
the ICM, I still don't know which method/API to use to compress the audio
as stated in my previous message.
In the
end we need to be output our audio and video data to all the
standard QuickTime formats. What is the best
direction?
Thank
you,
Joe
H
Vlog
It! lead Developer
Serious Magic
-----Original Message----- From:
quicktime-api-bounces+jhonoroff=email@hidden
[mailto:quicktime-api-bounces+jhonoroff=email@hidden] On
Behalf Of Joe Honoroff Sent: Tuesday, June 06, 2006 12:25
PM To: email@hidden Subject: Compressing A
& V to a movie file with QT for Windows
Hi
all,
This is my first
post, however I've been searching and reading the list for the past two
weeks.
We have a windows
app where users create and output videos. I am responsible for and have
written the publisher (output module), which currently output AVI, WMV, RM,
and Flash. I am now in the process of adding QT movie output. We
need to output for the web and uncompressed which will have UI presets, and in
an advanced tab allows the user to choose form any of the components installed
(I may use the Standard Dialogs for this) I'm using QT 7 for windows
and have the latest QuickTime installed.
As our app renders a
show, my publisher is given raw audio and video one frame and sample at a
time. I am successfully creating a .mov using CreateMovieStorage, and
using the ICM to create a compression session and encode the video frames
using a CVPixelBuffer. Then I'm passing each encoded video frame and
raw audio sample into AddMediaSample2.
My question
is, which method and set of API's should I use to compress the Audio so I can pass the encoded samples into
AddMediaSample2 Originally I thought I should use the
SoundMgr's ConvertSound, but then windows update guide say to use
CoreAudio's ConvertAudio, but that's not fully supported and finally I read that
the SoundMgr is outdated and that I should use an Audio
Exporter.
Can someone
please help me get in the right direction?
Thank
You
Joe
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