Block structure reuse for multi-rate high efficiency video coding

Schroeder, Damien; Rehm, Patrick; Steinbach, Eckehard

doi:10.1109/icip.2015.7351551

Cited by 20 publications

(18 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Combining this observation and the fact that the RDO process of the HEVC encoder is implemented recursively starting from the lowest depth, similar to [7], we propose to stop the RDO process of the dependent low resolution encoding at the depth given by the derived block structure, as shown in Fig. 7.…”

Section: Derived Ctu Block Structurementioning

confidence: 95%

“…A similar idea is implemented in [3] in the context of a VP8 encoder, but the resulting RD-performance of the multi-rate encoder is severely degraded compared to the single rate encoder. In our previous work [7], we presented a method which reuses the HEVC block structure from a reference representation at a high quality in order to reduce the encoding time for lower quality representations. However, all of this previous work only considered videos at a single spatial resolution.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multi-rate encoding for HEVC-based adaptive HTTP streaming with multiple resolutions

Schroeder

Ilangovan

Steinbach

2015

2015 IEEE 17th International Workshop on Multimedia Signal Processing (MMSP)

Self Cite

View full text Add to dashboard Cite

Adaptive HTTP streaming requires a video to be encoded at different rates and qualities called representations. The encoding of multiple representations with the new video coding standard HEVC is computationally complex. In this paper, we propose a multi-rate encoding method which reduces the complexity of encoding a video at multiple spatial resolutions. We first examine block structure similarities at different resolutions and propose a method to derive the block structure for a low resolution representation from a reference high resolution encoding. The derived block structure is used to speed up the encoding of low resolution representations. We further consider the content of the videos in order to achieve a rate-distortion (RD) performance similar to independent HEVC encoding. Experimental results show that the encoding time can be reduced by 50% on average for a low resolution video without degrading the RD performance.

show abstract

Section: Derived Ctu Block Structurementioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Multi-rate encoding for HEVC-based adaptive HTTP streaming with multiple resolutions

Schroeder

Ilangovan

Steinbach

2015

2015 IEEE 17th International Workshop on Multimedia Signal Processing (MMSP)

Self Cite

View full text Add to dashboard Cite

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: 98%

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

“…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)

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

Block structure reuse for multi-rate high efficiency video coding

Cited by 20 publications

References 8 publications

Multi-rate encoding for HEVC-based adaptive HTTP streaming with multiple resolutions

Multi-rate encoding for HEVC-based adaptive HTTP streaming with multiple resolutions

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

Multistream video encoder for generating multiple dynamic range bitstreams

Contact Info

Product

Resources

About