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Base

YouTube

Video Players
Poor
vc6acef75
A core JavaScript library for embedding and rendering the YouTube video player, handling video playback, user interactions, and streaming functionalities.
Updated 10/26/2026
https://www.youtube.com/s/player/cbcfbf2f/player_embed_es6.vflset/en_US/base.js
Overall Score
59

Recorded Observations

11

For this resource version

File Size

462.48 KB

Download size

Load Time

163.89ms

Network latency

Execution Time

0.00ms

Runtime performance

Version Telemetry

Version Timeline

Visual representation of each version's active period

Metrics Over Time

Security score, performance score, and file size trends

0255075100vc6acNormalized ScoreVersion
Security Score
Performance Score
File Size (KB)

Uptime History

Average response time over time

Version History Details

Detailed information for each version

vc6acef75Latest
Span: 3 days
Score: 54
Size: 462.48 KB

Exposure & Risks

Security Score

Overall Security54 / 100
Security RatingPoor

Risk Assessment

Critical Risks2
Total Observations3

Security Rating

Poor
Significant behavioral concerns detected, immediate attention recommended.

Behavioral Concerns

Long Script Execution Time

Detects unusually long script execution times, which could indicate resource abuse (e.g., cryptomining) or a stalled script.

Large Transfer Size

Detects if a resource has a large transfer size, which might impact performance.

Security Observations

Security-related findings from analysis

No security observations recorded for this version

Privacy & Data Flow

Data Collection

Cookies and local storage used by this script

Cookies

YSCSession
Registers a unique ID to keep statistics of what videos YouTube has seen from that particular user.
VISITOR_INFO1_LIVE6 months
Estimates the user's bandwidth on pages with YouTube videos.
PREF8 months
Registers a unique ID that Google uses to keep statistics of how the visitor uses YouTube videos across different websites.
yt-remote-connected-devicesPersistent
Stores the user's video playback preferences using embedded YouTube videos.
yt-remote-device-idPersistent
Stores the user's video playback preferences using embedded YouTube videos.
_ga2 years
Used by Google Analytics to distinguish users and track their interactions with YouTube content.

Local Storage

yt-player-headers-cache
Stores player headers for faster loading and content negotiation.
yt-player-bandwidth
Stores estimated bandwidth for adaptive streaming optimization.
yt-player-volume
Stores the user's last volume setting for consistent playback experiences.

Third-party Connections

External domains this script connects to

No external connections detected

Permissions Required

Browser permissions and capabilities used

No special browser permissions required.

Privacy Observations

Privacy-related findings from analysis

No privacy observations recorded for this version

Technical & Performance Analytics

Load Performance

File Size462.48 KB
Load Time163.89ms

Runtime Performance

Execution Time0.00ms
Network Requests0

Impact Assessment

Good
Minimal performance impact on page load

Performance Observations

Performance-related findings from analysis

No performance observations recorded for this version

Global Variables

Variables added to the global scope

_yt_playerytytDomDomGetNextIdytEventsEventsListenersytEventsEventsCounterytglobalytPubsub2Pubsub2InstanceytPubsub2Pubsub2SubscribedKeysytPubsub2Pubsub2TopicToKeysytPubsub2Pubsub2IsAsyncytPubsub2Pubsub2SkipSubKeyytNetworklessLoggingInitializationOptionsytPubsubPubsubInstanceytPubsubPubsubTopicToKeysytPubsubPubsubIsSynchronousytPubsubPubsubSubscribedKeysytLoggingTransportTokensToCttTargetIds_ytLoggingTransportTokensToJspbCttTargetIds_ytLoggingGelSequenceIdObj_ytLoggingDocDocumentNonce_yt_logging_screenytLoggingLatencyUsageStats_ytDebugData

Event Listeners

Events this script listens for

No event listeners detected

Browser API Access

APIs and browser features accessed by this script

No API access detected

Technical Details

Compressed
Yes
CDN Delivery
Yes
Recorded Observations
11
Is Mirror
No
Network Requests
0
Resource Hash
c6acef753928cbe14214f3b0c379ced1091782a723207c5a805b5529c97a2f20

AI Insights & Alternatives

Description

A comprehensive overview of this resource

This script is a fundamental component of the YouTube embedded player. It is responsible for initializing the video player within a web page, managing the streaming of video content, and rendering the user interface elements such as play/pause buttons, volume controls, progress bar, and captions. It communicates with YouTube's servers to fetch video data, handle playback state, and adapt the video quality based on network conditions and user settings. The script also enables features like autoplay, looping, and controlling the video programmatically via the YouTube Player API. It ensures that embedded YouTube videos function correctly, providing a consistent viewing experience across different websites while leveraging YouTube's extensive video infrastructure.

Key Features

Core functionalities and capabilities of this resource

  • Video embedding
  • Video playback
  • Adaptive streaming
  • Player controls
  • API integration
  • Fullscreen mode
  • Closed captions

Alternatives

Similar libraries you might consider

Documentation & Resources

Official Documentation