---------- Forwarded message ----------
From: Raman Sharma <email@hidden>
Date: May 29, 2006 12:48 PM
Subject: Re: Datarate using Compression Session API
To: Bus Mini <email@hidden>
No, it doesnt return an error.
But, the output file doesnt seem to have the datarate anywhere close
to what I specified.
Basically, what I am doing is :-
- Create a compressions session with the options where I have set the
kICMCompressionSessionOptionsPropertyID_AverageDataRate and
kICMCompressionSessionOptionsPropertyID_DataRateLimits to the same
value.
- Set the Input Source timestamp to ( SourceFrameNumber * TimeScale /
OutPutFrameRate )
- Set the Input Source duration for each Source Frame to 1
Doesnt give the expected output.
Any inputs would be appreciated.
-Raman
On 5/29/06, Bus Mini <email@hidden> wrote:
How do you know it doesn't work? Is it return a Error?
On 5/29/06, Raman Sharma <email@hidden> wrote:
>
While using the Compression Sequence API, SetCSequenceDataRateParams
can be used to set the data rate while performing compression. This
however doesnt work for H.264 encoder.
My question is :-
Is there a similar thing while using the ICM Compression Session API
introduced in QT 7 ? There are two properties that can be set :-
kICMCompressionSessionOptionsPropertyID_AverageDataRate
and
kICMCompressionSessionOptionsPropertyID_DataRateLimits
But that doesnt seem to work either. What is the correct way to set
the datarate for the compressed movie file ?
Thank you,
Raman
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Yours sincerely
Mini Bus.
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