Vortrag: Just Noticeable Difference-Aware Per-Scene Bitrate-Laddering for Adap...
Stammdaten
Titel: | Just Noticeable Difference-Aware Per-Scene Bitrate-Laddering for Adaptive Video Streaming |
Beschreibung: | In video streaming applications, a fixed set of bitrate-resolution pairs (known as a bitrate ladder) is typically used during the entire streaming session. However, an optimized bitrate ladder per scene may result in (i) decreased storage or delivery costs or/and (ii) increased Quality of Experience. This paper introduces a Just Noticeable Difference (JND)-aware perscene bitrate ladder prediction scheme (JASLA) for adaptive video-on-demand streaming applications. JASLA predicts jointly optimized resolutions and corresponding constant rate factors (CRFs) using spatial and temporal complexity features for a given set of target bitrates for every scene, which yields an efficient constrained Variable Bitrate encoding. Moreover, bitrate-resolution pairs that yield distortion lower than one JND are eliminated. Experimental results show that, on average, JASLA yields bitrate savings of 34.42% and 42.67% to maintain the same PSNR and VMAF, respectively, compared to the reference HTTP Live Streaming (HLS) bitrate ladder Constant Bitrate encoding using x265 HEVC encoder, where the maximum resolution of streaming is Full HD (1080p). Moreover, a 54.34% average cumulative decrease in storage space is observed. |
Schlagworte: | bitrate ladder, per-scene encoding, video streaming, Just Noticeable Difference |
Typ: | Angemeldeter Vortrag |
Homepage: | https://www.2023.ieeeicme.org/ |
Veranstaltung: | IEEE International Conference on Multimedia and Expo (ICME 2023) (Brisbane) |
Datum: | 12.07.2023 |
Vortragsstatus: | stattgefunden (Präsenz) |
Beteiligte
Vignesh Menon (intern) |
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Jingwen Zhu (extern) |
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Prajit T Rajendran (extern) |
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Hadi Amirpourazarian (intern) |
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Patrick Le Callet (extern) |
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Christian Timmerer (intern) |
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Zuordnung
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Fakultät für Technische Wissenschaften
Institut für Informationstechnologie
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AT - 9020 Klagenfurt am Wörthersee |
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Université de Nantes/Polytech Nantes
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FR - 44035 Nantes Cedex 1 |
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Université Paris-Saclay
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FR - 91190 Saint-Aubin |
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