Download all videos of a youtube channel

username-to-id.py

import googleapiclient.discovery

API_KEY = "YOUR_OWN_API_KEY"

def get_channel_id_for_channel_name(channel_name):
    youtube = googleapiclient.discovery.build("youtube", "v3", developerKey=API_KEY)

    request = youtube.search().list(
        part="snippet",
        q=channel_name,
        type="channel"
    )
    response = request.execute()

    if "items" in response and len(response["items"]) > 0:
        return response["items"][0]["snippet"]["channelId"]
    else:
        print("Channel not found.")
        return None

def main():
    channel_name = input("Enter the YouTube channel name: ")
    channel_id = get_channel_id_for_channel_name(channel_name)

    if channel_id:
        print(f"The channel ID is: {channel_id}")

if __name__ == "__main__":
    main()

yt-downloader.py

import os
import googleapiclient.discovery
import googleapiclient.errors
import subprocess

API_KEY = "YOUR_OWN_API_KEY"
YOUTUBE_API_SERVICE_NAME = "youtube"
YOUTUBE_API_VERSION = "v3"

def get_channel_videos(channel_id):
    youtube = googleapiclient.discovery.build(
        YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION, developerKey=API_KEY)
    
    video_ids = []
    next_page_token = None
    
    while True:
        request = youtube.search().list(
            part="id",
            channelId=channel_id,
            maxResults=50,
            pageToken=next_page_token,
            order="date",
            type="video"
        )
        response = request.execute()
        
        for item in response.get("items", []):
            video_ids.append(item["id"]["videoId"])
        
        next_page_token = response.get("nextPageToken")
        if not next_page_token:
            break
    
    return video_ids

def download_videos(video_ids, start_index=None, end_index=None):
    if start_index is not None and end_index is not None:
        video_ids = video_ids[start_index:end_index+1]

    for video_id in video_ids:
        video_url = f"https://www.youtube.com/watch?v={video_id}"
        cmd = f"yt-dlp {video_url}"
        subprocess.run(cmd, shell=True)

def main():
    channel_id = input("Enter the YouTube channel ID (not the URL, but the ID, like UCxx123456): ")

    video_ids = get_channel_videos(channel_id)
    print(f"{len(video_ids)} videos found on this channel.")
    
    choice = input("Do you want to download (1) all videos or (2) a specific range of videos? (Enter 1 or 2): ")

    if choice == "2":
        start_index = int(input("Enter the start index (0-based index): "))
        end_index = int(input("Enter the end index (0-based index): "))
        download_videos(video_ids, start_index, end_index)
    else:
        download_videos(video_ids)

if __name__ == "__main__":
    main()