US Patent 11375219 Coding method and system with improved dynamic internal bit depth

A video decoding method includes obtaining an encoded bitstream of an original video content, and obtaining signaling information associated with the encoded bitstream. The signaling information includes at least a sequence parameter set (SPS), which includes a parameter bit_depth_luma_minus8, which specifies a bit depth of samples of a luma array and a value of a luma quantization parameter range offset; and a parameter bit_depth_chroma_minus8, which specifies a bit depth of samples of a chroma array and a value of a chroma quantization parameter range offset. The method also includes determining an internal bit-depth K for adjusting the bit depth specified by the bit_depth_luma_minus8 and the bit depth specified by the bit_depth_chroma_minus8; performing a decoding process on the encoded bitstream, based the signaling information and using the bit_depth_luma_minus8 and the bit_depth_chroma_minus8, together with the internal bit-depth K, to recover the original video content; and presenting the original video content.