Region-Based Compression in GStreamer

Comments, chapters, ... Slides Search
Loading Click here to add:
Subscribe to notifications

When subscribed to notifications, an email will be sent to you for all added annotations.

Your user account has no email address.

Information on this media

1 view

In my [master’s thesis](https://lup.lub.lu.se/student-papers/search/publication/9197422), I explored region-based compression for sports broadcasting. We used FFmpeg because it provided a generic `addroi` filter for attaching ROI metadata that we could use for multiple encoders, but GStreamer currently lacks a simple way to define regions and pass them to encoders downstream, and I wanted to change this. To prototype this, I built a small Rust plugin that works similar to `addroi` to append `GstVideoRegionOfInterestMeta` to frames and extended `x264enc` to consume it. In this lightning talk, I will demo the prototype and show some results of using it, highlighting how a generic ROI solution could enable broader support for region-based compression in GStreamer. Images: addroi_filter: shows simple example of more compression in one region controlled_compression: Usuage of compressing audience in football arena more, for better quality on the field.

Creation date: Oct. 23, 2025
Speakers: Axel Tobieson
License: CC BY-SA 3.0
Links:

Other media in the channel "GStreamer Conference 2025"