Heterogeneous Video Transcoder for H.264/AVC to HEVC: Review

As a successor to the H.264/Advance Video Coding (AVC), High Efficiency Video Coding (HEVC) is invented to get more compression and high quality video. But HEVC increases the complexity of video coding. To reduce this complexity various methods are proposed with different approach which also enhance the video compression and quality of video. This paper contains different techniques for video transcoding such as dynamic thresholding, mode mapping, machine learning, complexity scalable and background modeling. Comparison of all techniques gives their advantages and disadvantages to modify video transcoder which benefits from the strength points of existing methods. Keywordsbackground modeling, complexity scalability, content modeling and early termination, dynamic thresholding, HEVC, machine learning, mode mapping.