Students Professional
JA EN

#abr

2 articles

01 ·Media in Production·FREE·10 min read HLS and DASH — How Video Actually Reaches You Streamed video does not flow — a player downloads small files a few seconds long, one after another. What segments and manifests really are, the arithmetic behind how a player picks a rendition, where latency comes from, how low-latency modes cheat it, and why none of it works without a CDN. 02 ·Media in Production·★ MEMBER·9 min read Designing a Bitrate Ladder — The First Job You Get in Streaming Why one video needs several renditions. From how ABR works to rate-distortion curves per resolution and the convex hull that picks your rungs, the three ways excess bitrate costs you, how PSNR, SSIM and VMAF differ and which one decides, and per-title encoding — ending in a step-by-step procedure from choosing clips to keeping the ladder honest.