Methods › Computer Vision › Video Frame Interpolation › RIFE
RIFE
Introduced by Zhewei Huang et al. in RIFE: Real-Time Intermediate Flow Estimation for Video Frame Interpolation
archive 2025-07-28 Description, source and code snippet are the archive's method entry.
RIFE, or Real-time Intermediate Flow Estimation is an intermediate flow estimation algorithm for Video Frame Interpolation (VFI). Many recent flow-based VFI methods first estimate the bi-directional optical flows, then scale and reverse them to approximate intermediate flows, leading to artifacts on motion boundaries. RIFE uses a neural network named IFNet that can directly estimate the intermediate flows from coarse-to-fine with much better speed. It introduces a privileged distillation scheme for training intermediate flow model, which leads to a large performance improvement.
In RIFE training, given two input frames I₀, I₁, we directly feed them into the IFNet to approximate intermediate flows F_(t →0), F_(t →1) and the fusion map M. During training phase, a privileged teacher refines student's results to get F_(t →0)^(T e a), F_(t →1)^(T e a) and Mᵀᵉᵃ based on ground truth Iₜ. The student model and the teacher model are jointly trained from scratch using the reconstruction loss. The teacher's approximations are more accurate so that they can guide the student to learn.
Papers archive 2025-07-28
2 shown of 2, newest first. Repository counts are the archive's code-links table. A Syntology line states what Syntology ran from that paper's harvested code; it is per sample and not a correctness claim.
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FastRIFE: Optimization of Real-Time Intermediate Flow Estimation for Video Frame Interpolation 27 May 2021 · 1 repository · arXiv:2105.13482
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RIFE: Real-Time Intermediate Flow Estimation for Video Frame Interpolation 12 Nov 2020 · 13 repositories · arXiv:2011.06294Syntology ran 19 of 26 samples · 7 unverified · 16 pointer-only (licence)
Tasks archive 2025-07-28
2 tasks the archive attaches to papers tagged with this method, by distinct papers. A task without a page in the catalog is plain text.
| Task | Papers |
|---|---|
| Video Frame Interpolation | 2 |
| Optical Flow Estimation | 1 |
Usage over time archive 2025-07-28
Components: the archive holds no method-to-method composition, so PwC's Components table cannot be rebuilt; the Papers list carries no Results column for the same reason (the archive does not join its leaderboard rows to method tags).
Categories archive 2025-07-28
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