How to upload from R2 to Cloudflare Stream for large files?

// Get the video from R2
const videoR2 = await this.env.COVE_STORAGE.get(
    `${video.organizationId}/${video.id}`,
);
if (!videoR2 || !videoR2.httpMetadata) {
    throw new NonRetryableError("Video not found in storage.");
}

// Upload the video from R2 to Cloudflare Stream
const formData = new FormData();
formData.append(
    "file",
    new Blob([await videoR2.blob()]),
    `${video.organizationId}/${video.id}`,
);

const streamResponse = await fetch(streamEndpoint, {
    method: "POST",
    headers: {
        Authorization: `Bearer ${this.env.CLOUDFLARE_API_TOKEN}`,
        // No Content-Type header - FormData will set it automatically with the boundary
    },
    body: formData,
});