如何使用YouTube API下载本人已举办的直播活动？

Hey there! I’ve run into this exact issue before—YouTube’s UI lets you download your own live replays easily, but tracking down the right API endpoints can feel like a needle-in-haystack job. Here’s a straightforward breakdown to get it working:

1. Lock in the Right API Access First #

• You’ll need to use the YouTube Data API v3—this is the official tool for managing your own YouTube content.
• Authenticate with OAuth 2.0 credentials that have the right permissions:
  • For read-only access to download your videos, use the scope https://www.googleapis.com/auth/youtube.readonly
  • If you need broader control (like managing future broadcasts), go with https://www.googleapis.com/auth/youtube
• Don’t forget to enable the YouTube Data API v3 in your Google Cloud Console project and set up OAuth credentials for your app/script.

2. Grab the Video ID of Your Completed Live Stream #

Once a live stream ends, it converts into a regular YouTube video. First, you need to pull the video ID linked to your finished broadcast:

• Use the liveBroadcasts.list endpoint with these parameters:
  • part=snippet
  • broadcastStatus=completed
  • mine=true (this filters results to only your own broadcasts)
• In the response, you’ll find the associated video ID under items[].snippet.resourceId.videoId

Alternatively, use the search.list endpoint for a more direct approach:

• part=snippet
• type=video
• eventType=completed
• mine=true
  This will return all your completed live stream videos directly, no extra steps needed.

3. Download the Video Using the Media API #

With the video ID in hand, you can pull the actual video file using Google’s media download tools:

• First, confirm ownership (though if you used mine=true earlier, this is already a given) with the videos.list endpoint and part=contentDetails.
• Then, use Google’s client libraries (like google-api-python-client for Python) to handle the download. Here’s a quick example snippet:

  from googleapiclient.discovery import build
  from googleapiclient.http import MediaIoBaseDownload
  import io
  
  # Initialize the API client with your OAuth credentials
  youtube = build('youtube', 'v3', credentials=your_oauth_credentials)
  
  # Start the download process
  request = youtube.videos().get(id=YOUR_LIVE_STREAM_VIDEO_ID)
  file_handle = io.FileIO('my_live_replay.mp4', 'wb')
  downloader = MediaIoBaseDownload(file_handle, request)
  
  done = False
  while not done:
      status, done = downloader.next_chunk()
      print(f"Download progress: {int(status.progress() * 100)}%")
  

Quick Important Notes #

• You can only download videos you own—this API won’t let you access other users’ content.
• If you hit permission errors, double-check your OAuth scope and make sure you’re authenticated as the live stream’s owner.
• The download will default to the highest available quality, but you can specify quality parameters in the media downloader if needed.

内容的提问来源于stack exchange，提问作者Vladimir