MPEG-4/XML File Compression and Its Application to Error Resilient Coding

摘要

Many error resilience techniques have been proposed to improve the MPEG-4 coding performance. However, most of them can hardly detect and correct errors occurring in headers, motion vectors and macroblock mode data. MPEG-4/XML was introduced in our previous work to protect the important information of video against error corruption. However, the overhead of a straightforward XML description can be high. In this work, we develop an efficient XML compression algorithm to reduce the MPEG-4/XML file size. Furthermore, we present a XML-based MPEG-4 error resilience technique performed at the macroblock level. Experimental results are given to demonstrate the performance of the proposed MPEG-4/XML coding technique.