79 lines
1.8 KiB
TypeScript
79 lines
1.8 KiB
TypeScript
const editly = require("editly");
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const graph_density = 1000;
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const threshold_at_point = 1;
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const inertia_s = 0.1;
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const inertia_samples = inertia_s * graph_density;
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let position = 0;
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let last_swap_position = 0;
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const s = (n: number) => Math.round(n / graph_density);
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const minutes = (units: number) => Math.floor(s(units) / 60);
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const formatTime = (units: number) =>
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`${minutes(units)}:${Math.floor(s(units) % 60)}`;
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let keep_loud_until = 0;
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let total_speaking = 0;
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const results: [string, number][] = [];
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process.stdin.on("readable", () => {
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let chunk: Buffer | null;
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let was_loud_last_time = false;
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while ((chunk = process.stdin.read()) !== null) {
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for (let i = 0; i < chunk.byteLength; i++) {
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position++;
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const byte = chunk[i];
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const volume = Math.abs(byte - 128);
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const is_loud: boolean =
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volume > threshold_at_point || position < keep_loud_until;
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if (is_loud) {
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total_speaking++;
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}
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if (is_loud != was_loud_last_time) {
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results.push([
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is_loud ? "silence" : "speaking",
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position - last_swap_position,
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]);
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last_swap_position = position;
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was_loud_last_time = is_loud;
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}
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if (volume > threshold_at_point) {
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keep_loud_until = position + inertia_samples;
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}
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}
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}
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});
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process.stdin.on("end", () => {
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console.log(results);
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const spec = {
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outPath: "./out.mp4",
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width: 800,
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height: 600,
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fps: 30,
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defaults: { transition: { duration: 0 } },
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audioFilePath: "/home/kuba/Downloads/odcinek1-kuba.wav",
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clips: results.map((e) => ({
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duration: s(e[1]),
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layers: [
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{
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type: "title",
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text: e[0] === "silence" ? " " : "Kuba Mówi",
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position: "center",
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},
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],
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})),
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fast: true,
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};
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console.log(spec);
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editly(spec).then(() => console.log("done!"));
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console.log(formatTime(total_speaking));
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});
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