HlsRung

type HlsRung = {
  bandwidth: number;
  durationSec?: number;
  height: number;
  name: string;
  segments?: number;
  url: string;
  width: number;
};

Defined in: packages/asset-client/src/index.ts:315

One rung of an adaptive HLS ladder.

segments / durationSec are what make a ladder JUDGEABLE rather than merely present. Measured on a prod ladder of an 87 s 4K source: 240p cut at 14.35 s in 12 segments, 720p at 5.63 s in 12, 2160p at 5.88 s in 14. Cuts that do not line up cannot be swapped, and a swap is what a rendition switch IS — so that ladder looked complete and adapted badly. One segment means zero switch points: whichever rung the player opens on is the rung it finishes on.

Both are optional because a rung whose playlist could not be read is recorded WITHOUT them rather than with a zero — unmeasured and none are different facts, and a 0 there would read as the latter.

Properties

bandwidth

bandwidth: number;

Defined in: packages/asset-client/src/index.ts:322

BANDWIDTH in bits per second.

---

durationSec?

optional durationSec?: number;

Defined in: packages/asset-client/src/index.ts:328

Sum of the #EXTINF values, seconds.

---

height

height: number;

Defined in: packages/asset-client/src/index.ts:320

---

name

name: string;

Defined in: packages/asset-client/src/index.ts:317

Rung directory / identity — "720p".

---

segments?

optional segments?: number;

Defined in: packages/asset-client/src/index.ts:326

#EXTINF count.

---

url

url: string;

Defined in: packages/asset-client/src/index.ts:324

Absolute URL of this rung’s media playlist.

---

width

width: number;

Defined in: packages/asset-client/src/index.ts:319

RESOLUTION from the master playlist.