Fast simultaneous video encoder for adaptive streaming

Praeter, Johan De; Díaz-Honrubia, Antonio Jesús; Kets, Niels Van; Wallendael, Glenn Van; Cock, Jan De; Lambert, Peter; Walle, Rik Van de

doi:10.1109/mmsp.2015.7340802

Cited by 21 publications

(9 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bayesian method essentially classifies blocks according to their computed posteriors. According to (6), the portion of g(p) where p < τ 1 is eligible for RDO early termination. This implies that a posterior admitting bimodal distribution is ideal for our purpose.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A Bayesian Approach to Block Structure Inference in AV1-Based Multi-Rate Video Encoding

Guo¹,

Chen²,

Gu³

et al. 2018

2018 Data Compression Conference

View full text Add to dashboard Cite

Due to differences in frame structure, existing multi-rate video encoding algorithms cannot be directly adapted to encoders utilizing special reference frames such as AV1 without introducing substantial rate-distortion loss. To tackle this problem, we propose a novel bayesian block structure inference model inspired by a modification to an HEVC-based algorithm. It estimates the posterior probabilistic distributions of block partitioning, and adapts early terminations in the RDO procedure accordingly. Experimental results show that the proposed method provides flexibility for controlling the tradeoff between speed and coding efficiency, and can achieve an average time saving of 36.1% (up to 50.6%) with negligible bitrate cost.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Such parameters and intermediate results include prediction modes, motion vectors/intra modes, and block structures [5]. It has been shown [5] [6] [7] that the encoder complexity can be significantly reduced by considering block structures alone.…”

Section: Introductionmentioning

confidence: 99%

A Bayesian Approach to Block Structure Inference in AV1-Based Multi-Rate Video Encoding

Guo¹,

Chen²,

Gu³

et al. 2018

2018 Data Compression Conference

View full text Add to dashboard Cite

show abstract

“…However, these encoders focus on providing different versions of a video at different bit rates [10], spatial resolutions [11], or a combination of both [12]. Since these works only accelerate CU decisions, the computational complexity of the resulting encoder is still significantly higher compared to the complexity of a single encoder.…”

Section: Related Workmentioning

confidence: 99%

Multistream video encoder for generating multiple dynamic range bitstreams

Goethem

Praeter

Paridaens

et al. 2016

2016 Picture Coding Symposium (PCS)

Self Cite

View full text Add to dashboard Cite

Abstract-High-dynamic-range (HDR) technology allows capturing of video content at a wider range of luminance than lowdynamic-range (LDR) video. The resulting video more closely resembles the scene as perceived by the human eye. However, displays currently support only a limited range of HDR. Therefore, both an HDR version and LDR version of a video should be encoded during content acquisition. This means that the cost of encoder hardware in cameras would double. As a solution, this paper proposes a multistream video encoder that allows generating an HDR and LDR version of the same HDR video footage at roughly the same computational complexity as a single encoder, effectively allowing encoding of two dynamicrange versions of the video with a negligible increase in cost. For the LDR version, this multistream encoder results in a bit rate overhead of only 11.6% for the same quality as a two-encoder solution.

show abstract

“…With the advent of HEVC, in which much of the complexity stems from determining the optimal structure out of many possible block structures, work on simultaneous encoding focuses on reducing the encoding complexity by limiting the amount of CUs and/or PUs to be evaluated in the simultaneously encoded streams based on the encoding decisions in the reference stream [6,19]. However, in this case, the reference stream is still encoded in HEVC.…”

Section: Fig 2 Quadtree Ctu Splitting Illustrationmentioning

confidence: 99%

CTU splitting algorithm for H.264/AVC and HEVC simultaneous encoding

et al. 2016

View full text Add to dashboard Cite

High-Efficiency Video Coding (HEVC) was conceived by the Joint Collaborative Team on Video Coding as the natural successor of the H.264/AVC standard, which has been the most extended digital video standard in all segments of the domestic and professional markets for over 10 years. HEVC roughly doubles the compression A. J. Diaz-Honrubia et al.performance of H.264/AVC in Rate-Distortion terms at the expense of a high computational cost. Thus, most of the previous-generation devices can decode H.264/AVC streams but they cannot decode HEVC yet, while emerging devices are supposed to be able to decode both standards. Video providers should take advantage of bandwidth reduction using HEVC when possible, but they should also provide compatible streams to older devices, making it necessary to encode the same stream using both H.264/AVC and HEVC standards. This paper presents a coding tree unit splitting algorithm for a heterogeneous simultaneous encoding scenario which makes use of information from H.264/AVC encoder to make faster decisions in HEVC. Experimental results show that the proposed algorithm can achieve a good trade-off between coding efficiency and complexity.

show abstract

Fast simultaneous video encoder for adaptive streaming

Cited by 21 publications

References 16 publications

A Bayesian Approach to Block Structure Inference in AV1-Based Multi-Rate Video Encoding

A Bayesian Approach to Block Structure Inference in AV1-Based Multi-Rate Video Encoding

Multistream video encoder for generating multiple dynamic range bitstreams

CTU splitting algorithm for H.264/AVC and HEVC simultaneous encoding

Contact Info

Product

Resources

About