How can I track how much of a YouTube video the user has watched?

@laverna_hirthe 

As a user, you cannot track how much of a YouTube video someone else has watched. However, as a content creator or developer, you can use the YouTube Data API to retrieve data about how much of your videos have been watched by your viewers.

To get started, you'll need to have a Google account and create a new project on the Google Developers Console. Once you have created your project and enabled the YouTube Data API, you can obtain an API key to make requests to the API.

Next, you can use the API to retrieve statistics for your videos, including the total number of views and the average view duration. You can also retrieve information about individual video views, including the percentage of the video that was watched and the time at which the viewer stopped watching.

Here's an example of how to retrieve information about a specific video using the YouTube Data API in Python:

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import googleapiclient.discovery
import googleapiclient.errors

# Replace with your API key
api_key = "YOUR_API_KEY_HERE"

youtube = googleapiclient.discovery.build("youtube", "v3", developerKey=api_key)

# Replace with the ID of the video you want to retrieve data for
video_id = "VIDEO_ID_HERE"

# Retrieve video statistics
request = youtube.videos().list(
    part="statistics",
    id=video_id
)
response = request.execute()

# Retrieve video view data
request = youtube.videos().list(
    part="contentDetails",
    id=video_id
)
response = request.execute()

# Retrieve individual video view data
request = youtube.videos().list(
    part="id,snippet,statistics,contentDetails",
    id=video_id,
    maxResults=50
)
response = request.execute()

This code will retrieve statistics for the specified video, including the total number of views and the average view duration. You can also retrieve data about individual video views by setting the maxResults parameter to a value greater than 1.

Keep in mind that the YouTube Data API has quotas and limits on the number of requests you can make per day, so you may need to use the API judiciously to avoid exceeding these limits.