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Open AccessArticle

Detection of Transcoding from H.264/AVC to HEVC Based on CU and PU Partition Types

School of Information Engineering, Beijing Institute of Graphic Communication, Beijing 102600, China
The Operation Center of Network Security Products China Telecom Corp. Ltd., Beijing 100010, China
School of Electronic and Information Engineering, Beijing JiaoTong University, Beijing 100044, China
Guangdong Provincial Key Laboratory of Information Security Technology, Guangzhou 510000, China
Jeejio Technology Co., Ltd, Beijing 100086, China
Author to whom correspondence should be addressed.
Symmetry 2019, 11(11), 1343;
Received: 5 October 2019 / Revised: 21 October 2019 / Accepted: 22 October 2019 / Published: 1 November 2019
High Efficiency Video Coding (HEVC) is a worldwide popular video coding standard due to its high coding efficiency. To make profits, forgers prefer to transcode videos from previous standards such as H.264/AVC to HEVC. To deal with this issue, an efficient method is proposed to expose such transcoded HEVC videos based on coding unit (CU) and prediction unit (PU) partition types. CU and PU partitioning are two unique syntactic units of HEVC that can reflect a video’s compression history. In this paper, CU and PU partition types of I pictures and P pictures are firstly extracted. Then, their mean frequencies are calculated and concatenated as distinguishing features, which are further sent to a support vector machine (SVM) for classification. Experimental results show that the proposed method can identify transcoded HEVC videos with high accuracy and has strong robustness against frame-deletion and shifted Group of Pictures (GOP) structure attacks. View Full-Text
Keywords: video forensics; HEVC; CU; PU; transcoding video forensics; HEVC; CU; PU; transcoding
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Zhang, Z.; Liu, C.; Li, Z.; Yu, L.; Yan, H. Detection of Transcoding from H.264/AVC to HEVC Based on CU and PU Partition Types. Symmetry 2019, 11, 1343.

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