如何检测YouTube指定文件是否为直播流？

You can absolutely check if a specified YouTube video/stream is live (or an upcoming/completed live broadcast) using the YouTube Data API v3. I’ve worked through this exact use case before, so let me break down how to pull it off step by step:

1. Use the Videos.list endpoint #

This is the core API endpoint you’ll need. You just need to pass two critical parameters:

• id: The unique ID of the YouTube content you want to check
• part: Specify snippet and liveStreamingDetails — these are the sections that hold all the live status data

Here’s a quick example request using curl:

curl "https://www.googleapis.com/youtube/v3/videos?id=YOUR_TARGET_CONTENT_ID&part=snippet,liveStreamingDetails&key=YOUR_YOUTUBE_API_KEY"

2. Interpret the response #

Look for these key fields in the API’s returned data to determine the content’s live status:

• Currently live stream:
  • snippet.liveBroadcastContent will be set to "live"
  • liveStreamingDetails will include an actualStartTime timestamp, and no actualEndTime (since the stream is still running)
• Upcoming scheduled live stream:
  • snippet.liveBroadcastContent will be "upcoming"
  • liveStreamingDetails will have a scheduledStartTime timestamp marking when the stream goes live
• Completed live stream (replay):
  • snippet.liveBroadcastContent will be "completed"
  • liveStreamingDetails will contain both actualStartTime and actualEndTime timestamps
• Regular non-live video:
  • The liveStreamingDetails field won’t appear in the response at all
  • snippet.liveBroadcastContent will be "none"

Quick notes #

• For public content, you only need a standard YouTube Data API key (no OAuth authentication required). If you’re checking private/unlisted live streams, you’ll need to authenticate with appropriate permissions.
• Double-check that your API key has the YouTube Data API v3 enabled in the Google Cloud Console before making requests.

内容的提问来源于stack exchange，提问作者Wojciech Urbaniak