BB FlashBack SDK: FBExportToFLVParams

QMin

Description

Sets the minimum quantizer (or quality) level to use when exporting. The smaller the quantizer level, the higher the quality.

The QMin value is used with the QMax value to set the upper and lower boundaries of quality that can be used to achieve the bitrate set by FLVBitrate.

Syntax

[C#/C++]
public long QMin;

[VB.NET]
Public Property QMin As Long

Remarks

QMin and QMax are quantizer levels. The lower the quantizer level, the higher the image quality. 100% quality is set by making QMin=QMax=1.

The FLV encoder uses these levels to create a file with the bitrate specified by the FLVBitrate property. For example, if we  set the bitrate to 400000bps, QMin =1 and QMax=50, the encoder may apply any quantizer value between 1 and 50 to achieve maximum quality while not exceeding 400000bps.

However, if qmin and qmax are set to a higher quality than can be achieved with the set bitrate, the quality settings take priority, and the bitrate will be exceeded.

See also

FBExportToFLVParams::QMax  FBExportToFLVParams::UseQMinQMax  FBExportToFLVParams::FLVBitrate