Nv12 stride, For more information, see the uv_stride member

Nv12 stride, Oct 4, 2024 · 在准备输入时，就需要按照上面的 stride 和 validshape 准备数据了。 但此时，无法解释为什么 nv12 输入时，这里的 stride 为什么必须是 -1，毕竟可以通过公式计算得到啊，为什么工具不计算好直接提供出来呢？. Navigate to specific image frame in file. When bits < 8, the stride is expressed in bits. 对齐规则 对于 NV12 输入，地平线 BPU 要求模型输入 HW 都是偶数，主要是为了满足 UV 是 Y 的一半的要求。 有效数据排布和对齐数据排布用 validShape 和 stride 表示。 NV12 yuv pixel format YUV 4:2:0 image with a plane of 8 bit Y samples followed by an interleaved U/V plane containing 8 bit 2x2 subsampled colour difference samples. Stride is often called pitch. It is yet another variant where colour information is stored at a lower resolution than the intensity data. The line stride and image height must be aligned to a multiple of 4. It is expected to be an intermediate-term requirement for DirectX VA accelerators supporting 4:2:0 video. Adjust R/G/B gain for Bayer Pattern formats. Specify color space of image and screen.


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