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Poster

Fast Encoding and Decoding for Implicit Video Representation

Hao Chen · Saining Xie · Ser-Nam Lim · Abhinav Shrivastava

Strong blind review: This paper was not made available on public preprint services during the review process Strong Double Blind
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Thu 3 Oct 1:30 a.m. PDT — 3:30 a.m. PDT

Abstract:

Despite the abundant availability and content richness for video data, its high-dimensionality poses challenges for video research. Recent advancements have explored the implicit representation for videos using deep neural networks, demonstrating strong performance in applications such as video compression and enhancement. However, the prolonged encoding time remains a persistent challenge for video Implicit Neural Representations (INRs). In this paper, we focus on improving the speed of video encoding and decoding within implicit representations. We introduce two key components: NeRV-Enc, a transformer-based hyper-network for fast encoding; and NeRV-Dec, an efficient video loader designed to streamline video research. NeRV-Enc achieves an impressive speed-up of by eliminating gradient-based optimization. Meanwhile, NeRV-Dec simplifies video decoding, outperforming conventional codecs with a loading speed faster, and surpassing RAM loading with pre-decoded videos ( faster while being smaller in size).

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