Analysis of Video Quality Losses in Homogeneous HEVC Video Transcoding

Analysis of video quality losses in the homogenous HEVC video transcoding

The paper presents quantitative analysis of the video quality losses in the homogenous HEVC video transcoder. With the use of HM15.0 reference software and a set of test video sequences, cascaded pixel domain video transcoder (CPDT) concept has been used to gather all the necessary data needed for the analysis. This experiment was done for wide range of source and target bitrates. The essential...

Video transrating in AVC and HEVC transcoding

HEVC (MPEG-H Part 2 and H.265) is a new coding technology which is expected to be deployed on the market along with new video services in the near future. HEVC is a successor of currently widely used AVC (MPEG-4 Part 10 and H.264). In this paper, the quality coding gains obtained for the Cascaded Pixel Domain Transcoder of AVC-coded material to HEVC standard are reported. Extensive experiments ...

Homogeneous Transcoding of HEVC

Homogeneous Video Transcoding of H.264/AVC Intra Coded Frames

The main goal of transcoding is to change bit rate of video sequence. This can be done by cascaded connection of decoder and encoder, known as Cascaded Pixel Domain Transcoder (CPDT). Decoding and re-encoding video bit stream always gives lower image quality than encoding original sequence. This paper presents a new technique of video transcoding that is able to deliver image quality superior t...

Direct Transcoding of AVC/H.264 Bitstreams for Bitrate Reduction with Minimized Video Quality Losses

The paper deals with transcoding of AVC/H.264 bitstreams where some bitrate reduction is required. For single-layer bitstreams, often Cascaded Pixel Domain Transcoders (CPDT) are used unaware of the fact that such transcoders are complex and very inefficient when used for bitrate reduction not exceeding 30% of the primary bitrate. In order to avoid these disadvantages, the authors propose struc...