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This cookie is used to evaluate users' bandwidth and determine whether they will receive the new or old YouTube player interface. It also collects information about users' interactions with videos and other features of the platform. It helps to improve the user experience by ensuring video playback appropriate to the user's network capabilities and enabling performance analysis of platform features.

This cookie is used to manage and store users' privacy preferences. It ensures that user's privacy choices, such as ad personalization settings, are respected while browsing and using YouTube. It helps YouTube comply with data protection regulations, such as GDPR, by ensuring that users' privacy preferences are followed and respected.

The YSC cookie is used by YouTube to track user sessions. It stores a unique identifier for each visit session, allowing YouTube to collect statistical data on video views. It is critical for tracking users' interactions with videos, collecting data that can be used to analyze content performance and improve user experience.