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Video4Zephyr: From Basic APIs Towards a Full-fledged Video Subsystem

on YouTube 38m
Talkat Open Source Summit Europe 2025 · on Monday, 2025-08-25· at 16:30· G106 (Level 1)· [embedded-and-hardware, linux-and-operating-systems]

speaker

name:Phi Bang Nguyen
links:none on file

resources

video:https://youtu.be/D5v30jMUv_c
slides:none on file

summary

Video4Zephyr started in 2019 as a minimal ABI and now moves toward a full subsystem with concrete changes: a devicetree device tree endpoints model to express circular camera topologies, a unified video control framework implementing V4L-like controls and clustered composite controls, and a new video buffer request API using buffer indices so applications no longer hold pointer lifetimes. Queue handling moves from f4 to IOQs to cut context switches, M2M support adds transform caps, a lightweight media library “lipb” is in progress, and USB and partial I2C/CCI support already exist.

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