PBS Kids Video Downloader

pbskids.py

import json
import requests
import subprocess
import re

home = requests.get("https://content.services.pbskids.org/v2/kidspbsorg/home/").text
home = json.loads(home)

shows = {}
episodes = {}

print("==========PBS Kids Show Downloader by Larsenv==========\n")

def title(j, k, data):
    i = 0
    for f in data:
        i += 1
        number = str(j) + str(i).zfill(2)
        number = number.zfill(3)
        if k == 0:
            shows[number] = f
        elif k == 1:
            episodes[number] = f
        print(number + ". " + f["title"])

print("Show List:")

print("\nWeekly Promo:\n")

promo = home["collections"]["kids-promo"]
shows["000"] = promo
print("000. " + promo["title"])

print("\nSpotlight:\n")

spotlight = home["collections"]["kids-show-spotlight"]["content"]
shows["001"] = spotlight[0]
print("001. " + spotlight[0]["title"])

for i in range(1, 4):
    print("\nTier {}:\n".format(i))

    title(i, 0, home["collections"]["kids-programs-tier-{}".format(i)]["content"])

selection = input("\nPlease enter the number of the show you want to download: ")

url = shows[selection]["URI"].replace("pbs.org", "pbskids.org")
showhome = json.loads(requests.get(url).text)

print("\nEpisode and Clips List:")

print("\nClips:\n")

title("", 1, showhome["collections"]["clips"]["content"])

print("\nEpisodes:\n")

title(2, 1, showhome["collections"]["episodes"]["content"])

print("\nPromoted Content:\n")

title(3, 1, showhome["collections"]["promoted_content"]["content"])

print("\nWould you like to download a single episode/clip or all episodes/clips?\n")
print("1. Single episode/clip")
print("2. All clips")
print("3. All episodes")
print("4. All promoted content")
choice = input("\nPlease enter your choice: ")

if choice == "1":
    selection2 = input("\nPlease enter the number of the episode or clip you want to download: ")
    selections_to_download = [selection2]
elif choice == "2":
    selections_to_download = [key for key in episodes.keys() if key.startswith('1')]
elif choice == "3":
    selections_to_download = [key for key in episodes.keys() if key.startswith('2')]
elif choice == "4":
    selections_to_download = [key for key in episodes.keys() if key.startswith('3')]
else:
    print("Invalid choice. Exiting.")
    exit()

for selection2 in selections_to_download:
    print(f"\nDownloading {episodes[selection2]['title']}...")

    # Follow the redirect to get the final episode URI
    redirected_uri = requests.get(episodes[selection2]["URI"], allow_redirects=True).url

    # Modify the episode URI to remove the resolution part
    episode_uri = re.sub(r'-\d+p_', '_', redirected_uri)

    # Fetch subtitles from 'closedCaptionsMultiLanguage' and pick the most compatible type
    preferred_formats = ["WebVTT", "SRT", "DFXP", "Caption-SAMI"]
    subtitle_languages = {}

    for cc in episodes[selection2]["closedCaptionsMultiLanguage"]:
        lang = cc["language"]
        if lang not in subtitle_languages:
            subtitle_languages[lang] = cc
        else:
            current_format = cc["format"]
            existing_format = subtitle_languages[lang]["format"]
            if preferred_formats.index(current_format) < preferred_formats.index(existing_format):
                subtitle_languages[lang] = cc

    # Collect the chosen subtitle URIs
    all_subtitles = [subtitle_languages[lang]["URI"] for lang in subtitle_languages]

    filename = (shows[selection]["title"] + " - " + episodes[selection2]["title"] + ".mkv").replace("/", " - ")

    # Prepare FFmpeg command
    ffmpeg_command = ["ffmpeg", "-i", episode_uri]

    # Add each subtitle stream to the command as input
    for vtt in all_subtitles:
        ffmpeg_command.extend(["-i", vtt])

    # Map video, audio, and all subtitles
    ffmpeg_command.extend(["-map", "p:0"])
    for i in range(len(all_subtitles)):
        ffmpeg_command.extend(["-map", str(i + 1)])

    # Set codec options
    ffmpeg_command.extend(["-c", "copy"])

    # Add metadata for language and title after all inputs
    for i, (lang, cc) in enumerate(subtitle_languages.items()):
        ffmpeg_command.extend([f"-metadata:s:s:{i}", f"language={lang}"])
        subtitle_name = cc.get("name", lang)
        ffmpeg_command.extend([f"-metadata:s:s:{i}", f"title={subtitle_name}"])

    # Add output filename
    ffmpeg_command.append(filename)

    # Execute FFmpeg command
    subprocess.call(ffmpeg_command)

    print(f"\n{episodes[selection2]['title']} downloaded successfully!")

Sorry to bother, but what browser extension is needed to run this script?