A survey: Heterogeneous video transcoder for H.264/AVC to HEVC

High Efficiency Video Coding (HEVC) is invented as new video coding standard for improvement of the H.264/AVC coding standard. HEVC currently used to enhance the video compression and quality of video. However, there are a lot of limitations in H.264/AVC encoded video. So the new efficient method is proposed for transcoding the H.264 encoded video into HEVC format. In this paper, different methods for video transcoding are explained which include mode mapping, machine learning, complexity scalable and background modeling.