Text to Avatar Video

import { randomUUID } from "node:crypto";
import { writeFile } from "node:fs/promises";


const apiKey = process.env.ANAM_API_KEY;
const avatarId = process.env.ANAM_AVATAR_ID;
const voiceId = process.env.ANAM_VOICE_ID;
const inputText = "Welcome to the product tour.";
if (!apiKey || !avatarId || !voiceId) {
  throw new Error("Set ANAM_API_KEY, ANAM_AVATAR_ID, and ANAM_VOICE_ID");
}


const createResponse = await fetch("https://api.anam.ai/v1/avatar-videos", {
  method: "POST",
  headers: {
    Authorization: "Bearer " + apiKey,
    "Content-Type": "application/json",
    // Reuse this value if you retry the same create request.
    "Idempotency-Key": process.env.ANAM_IDEMPOTENCY_KEY ?? randomUUID(),
  },
  body: JSON.stringify({
    script: inputText,
    avatarId,
    voiceId,
  }),
});
if (!createResponse.ok) throw new Error(await createResponse.text());
let video = await createResponse.json();


while (!["completed", "failed", "cancelled"].includes(video.status)) {
  await new Promise((resolve) => setTimeout(resolve, 2_000));
  const statusResponse = await fetch(
    "https://api.anam.ai/v1/avatar-videos/" + video.id,
    { headers: { Authorization: "Bearer " + apiKey } },
  );
  if (!statusResponse.ok) throw new Error(await statusResponse.text());
  video = await statusResponse.json();
}


if (video.status !== "completed" || !video.content?.available) {
  throw new Error(video.failure?.message ?? "Avatar video was not completed");
}


const mp4 = await fetch(video.content.url);
if (!mp4.ok) throw new Error("Could not download the completed video");
await writeFile("avatar-video.mp4", Buffer.from(await mp4.arrayBuffer()));