Video @Scale Fall 2022 LIVE Q&A #4
summary
Real-time GPU shader tone mapping runs for previews and uploads with latency comparable to SDR uploads, using an ITU-R tone mapping recommendation to preserve colors and keep client work on the GPU; server-side tone mapping handles playback on non‑HDR devices. AV1/SVT is tuned per resolution rather than a single preset to balance quality, compute and battery, with no fixed SVT preset — per-resolution tuning and thread/fast-decoder knobs to limit memory. CDN steering uses a content steering + CMCD feedback loop and remains multi‑year adoption work.
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chapters (15)
- 0:00Video @Scale Fall 2022 intro
- 0:30Client vs server tone mapping HDR
- 2:17GPU tone mapping HDR thumbnails
- 3:42Client-side tone mapping GPU
- 4:45Codec implications HDR tone mapping
- 5:30Selecting tone map algorithms HDR
- 8:47WebRTC adoption Everyone challenges
- 10:53SVT-AV1 encoding presets
- 13:01Server-side encoding trade-offs
- 14:27Content steering spec adoption
- 16:55Backward compatibility older players
- 17:58Ingestion paths failover
- 19:01Analytics CDN switching
- 20:25Player autonomy content steering
- 21:50Closing remarks
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