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A Constrained Variable Bit Rate (CVBR) Algorithm for VVenC, an Open VVC Encoder Implementation | IEEE Conference Publication | IEEE Xplore

A Constrained Variable Bit Rate (CVBR) Algorithm for VVenC, an Open VVC Encoder Implementation


Abstract:

Rate control (RC) schemes allow audio and video encoders to produce bitstreams according to specific overall bitrate constraints. However, when no rate capping is enforce...Show More

Abstract:

Rate control (RC) schemes allow audio and video encoders to produce bitstreams according to specific overall bitrate constraints. However, when no rate capping is enforced, the instantaneous bitrate may vary strongly and may exceed the target rate by an order of magnitude, potentially causing playback stutter especially in video streaming scenarios. This paper introduces a rate capping extension for the two RC modes in VVenC, an open Versatile Video Coding (VVC) compliant encoder implementation. After a revisit of VVenC’s two-pass RC approach, the algorithmic details of the rate capping model are described. The paper concludes with an objective evaluation of the performance of the RC extension in a random-access configuration.
Date of Conference: 04-07 December 2023
Date Added to IEEE Xplore: 29 January 2024
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Conference Location: Jeju, Korea, Republic of

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