Zhejiang University

Huawei Technologies Co., Limited

Xiaoding Gao

Lu Yu

Hualong Yu

Ye-Kui Wang

Haitao Yang

Yin Zhao

Yuqun Fan

Qichao Yuan

A method of bitstream verifying includes at the encoder side, the coded picture data of a spliced bitstream, containing a library bitstream and a main bitstream, is processed by different operations in the hypothetical bitstream buffer to simulate the data fulfillment level of the bitstream buffer. This is used to check whether the hypothetical bitstream buffer is overflowed or underflowed and verify the qualification of the bitstream. A method of managing bitstream at the decoder side is exploited to decode the library picture, which is inserted in the spliced bitstream, at a proper time. This ensures that a bitstream buffer with a limited capacity neither overflows nor underflows and the decoder can decode and present the picture of the main bitstream at a proper temporal order, which avoids lag of the main bitstream picture and waste of the decoded picture buffer.

Methods and apparatus of bitstream verifying and decoding

A video encoding method, a video decoding method, an apparatus, a device, and a storage medium include parsing a first flag from the video bitstream when a video bitstream is allowed to be decoded by referencing a library picture corresponding to a library picture bitstream, using a value of a target parameter of the video bitstream as a value of a target parameter of the library picture bitstream referenced by the video bitstream when a value of the first flag is a first value, and reconstructing, based on the value of the target parameter of the library picture bitstream referenced by the video bitstream and the library picture bitstream referenced by the video bitstream to obtain the library picture corresponding to the library picture bitstream referenced by the video bitstream.

Video coding and decoding methods and devices using a library picture bitstream

Growing community of inventors

Hangzhou, China

Xiaoding Gao