Instructions to use H-oliday/SwiftVR with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- Diffusers
How to use H-oliday/SwiftVR with Diffusers:
pip install -U diffusers transformers accelerate
import torch from diffusers import DiffusionPipeline # switch to "mps" for apple devices pipe = DiffusionPipeline.from_pretrained("H-oliday/SwiftVR", dtype=torch.bfloat16, device_map="cuda") prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k" image = pipe(prompt).images[0] - Notebooks
- Google Colab
- Kaggle
Add pipeline tag, library name and metadata
#1
by nielsr HF Staff - opened
README.md
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license: apache-2.0
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---
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<h1 align="center">SwiftVR: Real-Time One-Step Generative Video Restoration</h1>
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<p align="center"><img src="assets/teaser.avif" width="100%" alt="SwiftVR teaser"></p>
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> **SwiftVR** is the first generative video restoration model to reach **real-time 1080p streaming on a consumer-grade GPU** (β26 FPS on a single RTX 5090), sustains **31 FPS at QHD (2560Γ1440)** and **14 FPS at 4K (3840Γ2160)** on a single H100, and streams at resolutions where every compared diffusion-based VR baseline runs out of memory.
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<p>
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<a href="https://arxiv.org/abs/2606.09516"><img src="https://img.shields.io/badge/arXiv-2606.09516-b31b1b.svg?style=flat-square" alt="arXiv"></a>
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<a href="https://github.
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<a href="https://github.com/H-oliday/SwiftVR">
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<img src="https://img.shields.io/badge/GitHub-Code-181717.svg?style=flat-square&logo=github" alt="GitHub">
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</a>
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<a href="https://github.com/H-oliday/SwiftVR/blob/main/LICENSE"><img src="https://img.shields.io/badge/License-Apache%202.0-green.svg?style=flat-square" alt="License"></a>
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</p>
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## Updates
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- [2026/06] Release the inference code and pretrained weights π
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## β¨ Highlights
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- **Mask-free shifted-window self-attention (MFSWA).** Each spatial window is **pre-gathered into a dense tensor**, so every attention call reduces to a single standard scaled-dot-product (SDPA) call β *no attention mask, cyclic shift, or padding ever enters the graph*. This gives a **1.62Γ throughput gain over its full-attention teacher** at essentially identical quality, with **no dedicated sparse kernel**.
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- **Restoration-aware Autoencoder (ReAE).** A lightweight encoderβdecoder jointly fine-tuned with the DiT in pixel space removes the heavy-3D-VAE / tiled-decoding bottleneck.
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- **Causal chunk-wise streaming.** A minimal causal protocol (no rolling KV cache, no overlapped DiT inference) bounds the temporal axis, confining the residual \(\mathcal{O}(N^2)\) cost to the spatial axes.
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## π Results
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### Efficiency at 2560Γ1440 (single H100, causal streaming, 24 frames)
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> At **3840Γ2160**, every compared diffusion-based VR baseline **OOMs** on a single H100; SwiftVR sustains **14 FPS**.
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### Qualitative comparison
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<img src="assets/qualitative.png" width="100%" alt="SwiftVR teaser">
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## π Installation
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```bash
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git clone https://github.com/
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cd SwiftVR
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conda create -n swiftvr python=3.10 -y
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pip install -e .
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```
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<details>
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<summary><b>Hardware notes</b></summary>
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- **Server:** single H100-80G reproduces the QHD/4K numbers above.
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- **Consumer:** single RTX 5090 reaches β26 FPS at 1080p with the *same checkpoint* (default PyTorch SDPA path, bfloat16, causal chunk protocol).
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- No hardware-specific retraining or kernel rewrite is required on any platform.
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</details>
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## π Model Zoo
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| Model Name | Date | Backbone | Link |
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| SwiftVR | 2026.06 | Wan2.2-TI2V-5B | [π€ HuggingFace](https://huggingface.co/H-oliday/SwiftVR) |
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```bash
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huggingface-cli download H-oliday/SwiftVR --local-dir checkpoints/
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```
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Expected checkpoint layout (the directory passed to `from_pretrained`):
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```
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checkpoints/
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βββ reae.safetensors # Restoration-aware Autoencoder weights
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βββ prompt_embedding.safetensors# precomputed empty-prompt text embedding (key: "prompt_emb")
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βββ transformer/ # diffusers-format DiT
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βββ config.json
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βββ diffusion_pytorch_model.safetensors
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```
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## π Quick Start
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### Python API
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```python
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from swiftvr import SwiftVRPipeline
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pipe = SwiftVRPipeline.from_pretrained("
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pipe.restore_video("low_quality.mp4", "restored.mp4", upscale=4)
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```
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Tunable knobs include:
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* `clip_len`: middle chunk size, multiple of 4
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* `dit_overlap`: overlap for DiT inference
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* `fps`: output video frame rate
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* `quality`: 0β100, mapped to x265 CRF
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* `queue_size`: pipeline queue size
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### Streaming (causal, chunk by chunk, no future frames)
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Causal, chunk-by-chunk restoration without future frames.
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```python
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session = pipe.stream(clip_len=24, resolution=(1920, 1080))
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python scripts/inference.py \
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--input low_quality.mp4 \
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--output restored.mp4 \
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--checkpoint
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--upscale 4 \
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--clip-len 24 \
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--dtype bfloat16
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```
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## π¬ More Visual Results
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> Full-length restored clips (low-quality input β SwiftVR, played back to back).
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<video src="https://huggingface.co/H-oliday/SwiftVR/resolve/main/assets/demo_1.mp4" controls width="100%"></video>
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<video src="https://huggingface.co/H-oliday/SwiftVR/resolve/main/assets/demo_2.mp4" controls width="100%"></video>
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<video src="https://huggingface.co/H-oliday/SwiftVR/resolve/main/assets/demo_3.mp4" controls width="100%"></video>
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## π Acknowledgements
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SwiftVR builds on [Wan2.2-TI2V-5B](https://github.com/Wan-Video), the lightweight autoencoder [TAEHV](https://github.com/madebyollin/taehv), and the [RealBasicVSR](https://github.com/ckkelvinchan/RealBasicVSR) degradation pipeline. We thank the authors of [DOVE](https://github.com/zhengchen1999/DOVE), [SeedVR2](https://github.com/ByteDance-Seed/SeedVR), and [FlashVSR](https://github.com/OpenImagingLab/FlashVSR) for releasing strong baselines
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## π License
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SwiftVR is released under the **Apache License 2.0**.
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Copyright 2026 SwiftVR Authors.
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Licensed under the Apache License, Version 2.0. You may obtain a copy of the License at:
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, this project is distributed on an **"AS IS" BASIS**, without warranties or conditions of any kind, either express or implied. See the [LICENSE](./LICENSE) file for the full license text.
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## Contact
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If you have any questions, feel free to reach out:
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---
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license: apache-2.0
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pipeline_tag: image-to-image
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library_name: diffusers
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---
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<h1 align="center">SwiftVR: Real-Time One-Step Generative Video Restoration</h1>
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<p align="center"><img src="https://huggingface.co/H-oliday/SwiftVR/resolve/main/assets/teaser.avif" width="100%" alt="SwiftVR teaser"></p>
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> **SwiftVR** is the first generative video restoration model to reach **real-time 1080p streaming on a consumer-grade GPU** (β26 FPS on a single RTX 5090), sustains **31 FPS at QHD (2560Γ1440)** and **14 FPS at 4K (3840Γ2160)** on a single H100, and streams at resolutions where every compared diffusion-based VR baseline runs out of memory.
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<p>
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<a href="https://arxiv.org/abs/2606.09516"><img src="https://img.shields.io/badge/arXiv-2606.09516-b31b1b.svg?style=flat-square" alt="arXiv"></a>
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<a href="https://h-oliday.github.io/SwiftVR"><img src="https://img.shields.io/badge/Project-Page-1f8acb.svg?style=flat-square" alt="Project Page"></a>
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<a href="https://github.com/H-oliday/SwiftVR">
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<img src="https://img.shields.io/badge/GitHub-Code-181717.svg?style=flat-square&logo=github" alt="GitHub">
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</a>
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<a href="https://github.com/H-oliday/SwiftVR/blob/main/LICENSE"><img src="https://img.shields.io/badge/License-Apache%202.0-green.svg?style=flat-square" alt="License"></a>
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</p>
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SwiftVR is a streaming one-step generative video restoration (VR) framework presented in [SwiftVR: Real-Time One-Step Generative Video Restoration](https://arxiv.org/abs/2606.09516).
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## Updates
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- [2026/06] Release the inference code and pretrained weights π
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## β¨ Highlights
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- **Mask-free shifted-window self-attention (MFSWA).** Each spatial window is **pre-gathered into a dense tensor**, so every attention call reduces to a single standard scaled-dot-product (SDPA) call β *no attention mask, cyclic shift, or padding ever enters the graph*. This gives a **1.62Γ throughput gain over its full-attention teacher** at essentially identical quality, with **no dedicated sparse kernel**.
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- **Restoration-aware Autoencoder (ReAE).** A lightweight encoderβdecoder jointly fine-tuned with the DiT in pixel space removes the heavy-3D-VAE / tiled-decoding bottleneck.
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- **Causal chunk-wise streaming.** A minimal causal protocol (no rolling KV cache, no overlapped DiT inference) bounds the temporal axis, confining the residual \(\mathcal{O}(N^2)\) cost to the spatial axes.
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## π Results
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### Efficiency at 2560Γ1440 (single H100, causal streaming, 24 frames)
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> At **3840Γ2160**, every compared diffusion-based VR baseline **OOMs** on a single H100; SwiftVR sustains **14 FPS**.
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## π Installation
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```bash
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git clone https://github.com/H-oliday/SwiftVR.git
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cd SwiftVR
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conda create -n swiftvr python=3.10 -y
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pip install -e .
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```
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## π Quick Start
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### Python API
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```python
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from swiftvr import SwiftVRPipeline
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pipe = SwiftVRPipeline.from_pretrained("H-oliday/SwiftVR").to("cuda", dtype="bfloat16")
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pipe.restore_video("low_quality.mp4", "restored.mp4", upscale=4)
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```
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### Streaming (causal, chunk by chunk)
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```python
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session = pipe.stream(clip_len=24, resolution=(1920, 1080))
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python scripts/inference.py \
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--input low_quality.mp4 \
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--output restored.mp4 \
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--checkpoint H-oliday/SwiftVR \
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--upscale 4 \
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--clip-len 24 \
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--dtype bfloat16
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```
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## π¬ Visual Results
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<video src="https://huggingface.co/H-oliday/SwiftVR/resolve/main/assets/demo_1.mp4" controls width="100%"></video>
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## π Acknowledgements
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SwiftVR builds on [Wan2.2-TI2V-5B](https://github.com/Wan-Video), the lightweight autoencoder [TAEHV](https://github.com/madebyollin/taehv), and the [RealBasicVSR](https://github.com/ckkelvinchan/RealBasicVSR) degradation pipeline. We thank the authors of [DOVE](https://github.com/zhengchen1999/DOVE), [SeedVR2](https://github.com/ByteDance-Seed/SeedVR), and [FlashVSR](https://github.com/OpenImagingLab/FlashVSR) for releasing strong baselines.
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## π Citation
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```bibtex
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@article{yan2026swiftvr,
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title={SwiftVR: Real-Time One-Step Generative Video Restoration},
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author={Yan, Jiaqi and Chen, Xiangyu and Zhong, Xinlin and Huang, Haibin and Zhang, Chi and Liu, Jie and Zhou, Jiantao and Li, Xuelong},
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journal={arXiv preprint arXiv:2606.09516},
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year={2026}
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}
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```
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