How does the X Video Kickstart Bonus work?

import json, pathlib, subprocess, os, requests
from datetime import datetime, timedelta
from zoneinfo import ZoneInfo

OT = {"Authorization": f"Bearer {os.environ['OPENTWEET_API_KEY']}"}
TZ = ZoneInfo("America/New_York")             # your time zone
captions = json.load(open("captions.json"))   # {"day01.mp4": "caption", ...}

def probe(path):
    out = subprocess.run(["ffprobe", "-v", "error", "-select_streams", "v:0",
                          "-show_entries", "stream=width,height:format=duration",
                          "-of", "json", str(path)], capture_output=True, text=True).stdout
    info = json.loads(out)
    return info["streams"][0]["width"], info["streams"][0]["height"], float(info["format"]["duration"])

clips = []
for path in sorted(pathlib.Path("clips").glob("*.mp4")):
    w, h, secs = probe(path)
    if h <= w or secs >= 180:
        print(f"skip {path.name}: {w}x{h}, {secs:.0f}s (needs vertical, under 3 minutes)")
        continue
    clips.append(path)

first_day = datetime.now(TZ).date() + timedelta(days=1)
posts = []
for i, path in enumerate(clips[:15]):
    with open(path, "rb") as f:                # stored by OpenTweet, so the link never expires
        up = requests.post("https://opentweet.io/api/v1/upload", headers=OT,
                           files={"file": (path.name, f, "video/mp4")}, timeout=300)
    up.raise_for_status()
    noon = datetime.combine(first_day + timedelta(days=i), datetime.min.time(), TZ).replace(hour=12)
    posts.append({"text": captions.get(path.name, ""), "media_urls": [up.json()["url"]],
                  "scheduled_date": noon.isoformat()})

requests.post("https://opentweet.io/api/v1/posts", headers=OT, json={"posts": posts}).raise_for_status()
print(len(posts), "videos scheduled, one a day at noon")

skip day4-wide.mp4: 1920x1080, 5s (needs vertical, under 3 minutes)
skip day5-long.mp4: 1080x1920, 190s (needs vertical, under 3 minutes)
2026-11-11T12:00:00-05:00  day1.mp4  Day 1
2026-11-12T12:00:00-05:00  day2.mp4  Day 2
2026-11-13T12:00:00-05:00  day3.mp4  Day 3
3 videos scheduled, one a day at noon