fetchTrackingWindow()

function fetchTrackingWindow(game, options): Promise<MetricaFrame[]>;

Defined in: packages/data-providers/src/metrica/load.ts:452

Read a window of a sample game's frames without downloading either whole file, using HTTP Range requests.

Six seconds around a goal is 150 frames. Measured against GitHub, reading them takes about six requests and 220 KB, against 65 MB for the whole game. Only plain bytes=start-end ranges are sent and no response header is read, so it works cross-origin in a browser too.

const goal = shots(await fetchEvents(1)).find(isGoal)!;
const frames = await fetchTrackingWindow(1, {
  fromFrame: goal["Start Frame"] - 125,
  toFrame: goal["End Frame"],
});

If the host ignores Range and sends a whole file back, that file is read instead, so the result is the same, only slower.

Parameters

Returns

Promise<MetricaFrame[]>