(HDR/WCG) video data can be configured to determine a quantization parameter for quantized transform coefficients of a block of the HDR/WCG video data; inverse quantize the quantized transform coefficients based on the determined quantization parameter to determine dequantized transform coefficients; ...
这几个模式都属于可变码率,即VBR(Variable Bitrate); CQP(Constant QP),恒定QP(Quantization Parameter),追求量化失真的恒定,瞬时码率会随场景 复杂度而波动,该模式基本被淘汰(被 CRF 取代),只有用”-pq 0”来进行无损编码还有价值。 CRF(Constant Rate Factor),恒定质量因子,与恒定 QP 类似,但追求主观感知到的...
Remarks Requirements See also Specifies the quantization parameter (QP) used with H264 video encoding. Syntax public static Guid H264QuantizationParameter { get; } Property value Type:System.Guid[.NET] |Platform::Guid[C++] The ID of the quantization parameter (QP). ...
The rate controller assigns a quantization parameter for video data in a picture in response to complexity indicators indicative of spatial complexity, motion complexity a... A Puri - US 被引量: 57发表: 2005年 Video coding with adaptive quantization and rate control Adaptive quantization and rate...
Quantization parameter for B-frames (0xffffffff=component default), use with ratecontrol-enable = 0 and preset-level = 0 Unsigned Integer, 0 - 4294967295 Default: 4294967295 Jetson quant-i-frames Quantization parameter for I-frames (0xffffffff=component default), use with ratecontrol-enable = ...
Depending upon the actual emphasis level for each macroblock, the encoder applies an adjustment to the quantization parameter used to encode that macroblock. The value of this adjustment depends on the following factors: Absolute value of the QP as decided by the rate control algorithm, depending...
3.3最大帧量化参数(Max framequantization parameter) 量化参数,简称QP,用来调节图片质量和码率的。低 QP 会生成高清晰度的图片,图片的大小会比较大。反过来高 QP会带来低质量,体积更小的图片。 低延迟模式下,编码器会综合考虑图片复杂度、输入帧率、视频运动等因素来调整 QP,从而在目标码率的限制下,编码出最高质量...
[Android.Runtime.Register("KEY_VIDEO_QP_B_MIN", ApiSince=31)] public const string KeyVideoQpBMin; Field Value String Attributes RegisterAttribute Remarks A key describing the minimum Quantization Parameter allowed for encoding video. This value applies to video B-frames. The associated value ...
-->量化(Quantization) 码率(Bitrate)是单位时间传送的数据位数,码率越小体积越小,码率越高越清晰。编解码时,我们希望以最低的码率达到最少的失真。量化是使数据Bitrate下降的一个有力工具,量化过程不可逆,不可导,有信息丢失,引入误差。训练过程中,BP需要梯度信息,可以通过添加均匀噪声模拟量化;推理过程中,使用round...
A key describing the minimum Quantization Parameter allowed for encoding video. C# 複製 [Android.Runtime.Register("KEY_VIDEO_QP_I_MIN", ApiSince=31)] public const string KeyVideoQpIMin; Field Value String Attributes RegisterAttribute Remarks A key describing the minimum Quantization Parameter ...