Papers › HNeRV: A Hybrid Neural Representation for Videos

HNeRV: A Hybrid Neural Representation for Videos

5 Apr 2023CVPR 2023 1arXiv:2304.02633archive 2025-07-28

Hao Chen, Matt Gwilliam, Ser-Nam Lim, Abhinav Shrivastava

Implicit neural representations store videos as neural networks and have performed well for various vision tasks such as video compression and denoising. With frame index or positional index as input, implicit representations (NeRV, E-NeRV, \etc) reconstruct video from fixed and content-agnostic embeddings. Such embedding largely limits the regression capacity and internal generalization for video interpolation. In this paper, we propose a Hybrid Neural Representation for Videos (HNeRV), where a learnable encoder generates content-adaptive embeddings, which act as the decoder input. Besides the input embedding, we introduce HNeRV blocks, which ensure model parameters are evenly distributed across the entire network, such that higher layers (layers near the output) can have more capacity to store high-resolution content and video details. With content-adaptive embeddings and re-designed architecture, HNeRV outperforms implicit methods in video regression tasks for both reconstruction quality (+4.7 PSNR) and convergence speed (16× faster), and shows better internal generalization. As a simple and efficient video representation, HNeRV also shows decoding advantages for speed, flexibility, and deployment, compared to traditional codecs~(H.264, H.265) and learning-based compression methods. Finally, we explore the effectiveness of HNeRV on downstream tasks such as video compression and video inpainting. We provide project page at https://haochen-rye.github.io/HNeRV, and Code at https://github.com/haochen-rye/HNeRV

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ActivationLayer haochen-rye/hnerv/model_all.py official repository ran · our draft was wrong no licence file found · pointer only · 2798c7e0f39b709e · report
ConvNeXt haochen-rye/hnerv/model_all.py official repository ran · metamorphic tier: invariant no licence file found · pointer only · b0de12d36f1727f2 · report
DownConv haochen-rye/hnerv/model_all.py official repository ran · metamorphic tier: invariant fingerprinted no licence file found · pointer only · 2f0b07dfa92f0524 · report
NeRVBlock haochen-rye/hnerv/model_all.py official repository ran fingerprinted no licence file found · pointer only · eec5f1dcb74ff87a · report
OutImg haochen-rye/hnerv/model_all.py official repository ran no licence file found · pointer only · 7096d2bc3a411504 · report
PositionEncoding haochen-rye/hnerv/model_all.py official repository ran · metamorphic tier: invariant no licence file found · pointer only · bd7b495abeba892f · report
Sin haochen-rye/hnerv/model_all.py official repository ran · metamorphic tier: invariant fingerprinted no licence file found · pointer only · 6a4b88c02d94376c · report
UpConv haochen-rye/hnerv/model_all.py official repository ran · metamorphic tier: invariant fingerprinted no licence file found · pointer only · a44d6c3b8812b4e0 · report
HNeRV haochen-rye/hnerv/model_all.py official repository unverified no licence file found · pointer only · e18cfef2479b9b91 · report

Tasks

DecoderDenoisingVideo CompressionVideo InpaintingVideo Reconstructionregression

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Video Reconstruction UVG HNeRV Average PSNR (dB) 35.23 #4 of 7 Archive leaderboard report
Video Reconstruction UVG HNeRV Model Size (M) 12.87M #4 of 7 Archive leaderboard report

Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.

Methods

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