S-Frame in AV1: Enabling better compression for low latency live streaming.
summary
Defines S-frame (Switching Frame) as a new AV1 frame type that behaves like a P/inter frame but carries all nonreference state in the elementary stream, forces backward-only refs, disables temporal motion vectors, and flushes decoder reference buffer. Experiments encode one-second segments with keyframes every two seconds plus S-frames and compare to per-segment keyframes, reporting average 15% savings and peaks of up to 20% bitrate savings while preserving low-latency switching.
AI-written summary · about
chapters (10)
- 0:00Introduction
- 0:55Intra and inter prediction
- 1:49Application
- 3:06Segment Duration
- 4:01SFrame
- 5:40SFrame Example
- 7:29SFrame Implementation
- 8:12Constraints
- 8:55Frame type
- 10:34Graphs
