Loss of information during transmission of compressed video over error prone networks may lead to objectionable visual distortion in the decoded video , and such distortion can propagate to many frames because of the motion compensated prediction and the variable - length coding used 采用運動補償預測及可變長編碼的壓縮視頻數(shù)據(jù),在極易發(fā)生干擾的網(wǎng)絡環(huán)境中傳輸時,信道傳輸差錯對壓縮編碼圖像質量影響很大,有時甚至會導致整個視頻通信完全失效。
The extensive use of prediction and variable - length coding in video coding renders compressed bitstreams especially vulnerable to transmission errors and data losses . based on detailed analyses of mc - dpcm / dct mechanism , several error detection , resilience , concealment methods are discussed in this paper 本文在分析mc - dpcm dct壓縮視頻特點的基礎上研究了各種誤碼檢測方法,并詳細討論了編碼端的誤碼容錯、傳輸層差錯控制、解碼端的失真屏蔽以及編碼器和解碼器交互的差錯控制方法。
百科解釋
In coding theory a variable-length code is a code which maps source symbols to a variable number of bits.