[PR #14314] [MERGED] Use square root scaling for high framerate videos' bitrate requirements #13752

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opened 2025-12-22 10:02:50 +01:00 by backuprepo · 0 comments

backuprepo commented

2025-12-22 10:02:50 +01:00

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📋 Pull Request Information

Original PR: https://github.com/jellyfin/jellyfin/pull/14314
Author: @gnattu
Created: 6/15/2025
Status: ✅ Merged
Merged: 6/15/2025
Merged by: @crobibero

Base: master ← Head: resolution-square-root-scaling

📝 Commits (2)

55bdc12 Use square root scaling for high framerate videos' bitrate requirements
a0cde06 Add comment

📊 Changes

1 file changed (+6 additions, -1 deletions)

View changed files

📝 MediaBrowser.Model/Dlna/ResolutionNormalizer.cs (+6 -1)

📄 Description

The previous linear scaling model is inefficient for modern codecs for high frame rate(>30fps) videos. It may force an extremely low resolution like 540p, under poor network conditions(<5Mbps). High frame rates benefit from H264’s temporal inter-frame compression, and human perception of quality diminishes with increasing frame rates. Square root scaling for high framerate videos fits the use case better.

Changes

Issues

Fixes #14238

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/jellyfin/jellyfin/pull/14314 **Author:** [@gnattu](https://github.com/gnattu) **Created:** 6/15/2025 **Status:** ✅ Merged **Merged:** 6/15/2025 **Merged by:** [@crobibero](https://github.com/crobibero) **Base:** `master` ← **Head:** `resolution-square-root-scaling` --- ### 📝 Commits (2) - [`55bdc12`](https://github.com/jellyfin/jellyfin/commit/55bdc12cf7e6fd9aaf76394409ba4162e3aa0084) Use square root scaling for high framerate videos' bitrate requirements - [`a0cde06`](https://github.com/jellyfin/jellyfin/commit/a0cde06ec6a2cfe1d27e1fe04cc7c39256923d02) Add comment ### 📊 Changes **1 file changed** (+6 additions, -1 deletions) <details> <summary>View changed files</summary> 📝 `MediaBrowser.Model/Dlna/ResolutionNormalizer.cs` (+6 -1) </details> ### 📄 Description The previous linear scaling model is inefficient for modern codecs for high frame rate(>30fps) videos. It may force an extremely low resolution like 540p, under poor network conditions(<5Mbps). High frame rates benefit from H264’s temporal inter-frame compression, and human perception of quality diminishes with increasing frame rates. Square root scaling for high framerate videos fits the use case better.  **Changes**  **Issues**  Fixes #14238 --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

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2025-12-22 10:02:50 +01:00

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Reference: starred/jellyfin#13752

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