IsVBR Attribute

[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The IsVBR attribute indicates whether the content was encoded using variable bit rate (VBR) encoding.

Applies To

• Commonly Used Windows Media Files
• Video Items

Remarks

This attribute is stored only in the digital media file.

The Windows Media Format SDK constant for this attribute is g_wszWMIsVBR.

To determine whether you can change the value of this attribute, use the Media.isReadOnlyItem method.

Requirements

Requirement	Value
Version	Windows Media Player 9 Series or later

See also

Attribute Reference