IltmfConvert::EstimateOutputSize

Summary

Retrieves the estimated conversion output size, in bytes, for the specified duration.

Syntax

#include "ltmf.h"

Parameters

IltmfConvert *pConvert

Pointer to an IltmfConvert interface.

double Duration

Value the represents the duration in seconds for which to retrieve the estimated output size. Pass the value 1 to estimate the conversion output size for the whole file duration.

double *pVal

Pointer to a variable to be updated with the estimated output size for the duration.

Returns

Comments

The estimated output size is calculated using the following equation:

Size = (Bitrate * Duration) / 8.

The returned size depends on the state of the convert object.

If the object is in the running state, the returned size is related to the actual number of bytes that have been written.

While if the object is not running, the returned size is a theoretical value dependent on the conversion settings and the chosen encoding settings.

Required DLLs and Libraries

• LTMF
• For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions

• IltmfConvert::EstimateOutputBitRate

Topics

• Media Foundation Function Group

Example

For a C++ example, refer to IltmfConvert::EstimateOutputSize Example for C++.