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Effectiveness of Crypto-Transcoding for H.264/AVC and HEVC Video Bit-streams [article]

Rizwan A. Shah, Mamoona N. Asghar, Saima Abdullah, Martin Fleury, and Neelam Gohar
2019 arXiv   pre-print
The scheme will reduce the bitrate to one or more lower desired bit-rate without consuming time in the encryption/decryption process, which would be the case when full encryption is used.  ...  The scheme is suited to both recent standardized codecs, namely H.264/Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC).  ...  (In some cases in HEVC, an 8 × 8 pixel block is further split into 4 × 8 and 8 × 4 pixel block sizes as well. 2 : 2 In the H.264/HEVC decoder, for every compressed H.264/HEVC encoded bitstream, the horizontal  ... 
arXiv:1902.06990v1 fatcat:ar4oivsygzcp3bc3iq6h5mj7tm

Adaptive Bitrate Selection for Video Encoding with Reduced Block Artifacts

Min-Kook Choi, Hyun-Gyu Lee, Minseok Song, Sang-Chul Lee
2016 Proceedings of the 2016 ACM on Multimedia Conference - MM '16  
We validated our method throughout multiple types of videos, showing improved visual quality for the same file size based on commonly used quality assessment measures, such as MSU blocking, MSU blurring  ...  Finally, we define and optimize our objective function from the blocking artifact density functions in order to select a bitrate with minimum perceptual blockiness and file size for each frame.  ...  [6] developed an algorithm that measures network bandwidth, frame size, PSNR and SSIM for rate-control under H.264 HEVC.  ... 
doi:10.1145/2964284.2967227 dblp:conf/mm/ChoiLSL16 fatcat:ymsu3g6xk5g27nkohez5d7wkcq

Cost-Efficient and Robust On-Demand Video Transcoding Using Heterogeneous Cloud Services

Xiangbo Li, Mohsen Amini Salehi, Magdy Bayoumi, Nian-Feng Tzeng, Rajkumar Buyya
2018 IEEE Transactions on Parallel and Distributed Systems  
Given the fact that viewers' access pattern to video streams follows a long tail distribution, for the video streams with low access rate, we propose to transcode them in an on-demand manner using cloud  ...  The challenge in utilizing cloud services for on-demand video transcoding is to maintain a robust QoS for viewers and cost-efficiency for streaming service providers.  ...  MPEG2 is widely used for DVD and video broadcasting, while HD or Blu-ray videos are mostly encoded with H.264. HEVC is the latest and most efficient compression standard.  ... 
doi:10.1109/tpds.2017.2766069 fatcat:zytrniilvfbq7ej725wxvqwcni

Loss Visibility Optimized Real-Time Video Transmission Over MIMO Systems

Amin Abdel Khalek, Constantine Caramanis, Robert W. Heath
2015 IEEE transactions on multimedia  
In this paper, we introduce an architecture for real-time video transmission over multiple-input multiple-output (MIMO) wireless communication systems using loss visibility side information.  ...  We show that the solution enables jointly reaping gains in terms of improved video quality and lower latency.  ...  We note that the feature set used for estimating loss visibility is scalable across major coding standards, namely H.265, also known as High efficiency video coding (HEVC), and H.264.  ... 
doi:10.1109/tmm.2015.2468196 fatcat:clzbknty35dpxcia7dt7a5digq