AVISave - Win32 Multimedia Programmer's Reference

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AVISave

The AVISave function builds a file by combining data streams from other files or from memory.

HRESULT AVISave(

LPCTSTR szFile,
CLSID * pclsidHandler,
AVISAVECALLBACK lpfnCallback,
int nStreams,
PAVISTREAM pavi,
LPAVICOMPRESSOPTIONS lpOptions,
. . .
);

Parameters
szFile

Null-terminated string containing the name of the file to save.

pclsidHandler

Address of the file handler used to write the file. The file is created by calling the AVIFileOpen function using this handler. If a handler is not specified, a default is selected from the registry based on the file extension.

lpfnCallback

Address of a callback function for the save operation.

nStreams

Number of streams saved in the file.

pavi

Address of an AVI stream. This parameter is paired with lpOptions. The parameter pair can be repeated as a variable number of arguments.

lpOptions

Address of an application-defined AVICOMPRESSOPTIONS structure containing the compression options for the stream referenced by pavi. This parameter is paired with pavi. The parameter pair can be repeated as a variable number of arguments.

Return Values
Returns AVIERR_OK if successful or an error otherwise.

Remarks
This function creates a file, copies stream data into the file, closes the file, and releases the resources used by the new file. The last two parameters of this function identify a stream to save in the file and define the compression options of that stream. When saving more than one stream in an AVI file, repeat these two stream-specific parameters for each stream in the file.

A callback function (referenced by using lpfnCallback) can display status information and let the user cancel the save operation. The callback function uses the following format:

LONG PASCAL SaveCallback(int nPercent)

The nPercent parameter specifies the percentage of the file saved.

The callback function should return AVIERR_OK if the operation should continue and AVIERR_USERABORT if the user wishes to abort the save operation.

See Also
AVIFileOpen, AVICOMPRESSOPTIONS

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