Streaming a high-definition movie requires more than just fast internet
In short: A raw 1080p video stream would require nearly 1.5 gigabits per second to transmit in real time. This video explains the sophisticated compression techniques that make modern streaming possible by shrinking massive amounts of data into manageable files.
To handle the sheer scale of digital media, engineers use two primary types of coding. Intra-frame (spatial) coding compresses individual images based on their internal patterns, while inter-frame (temporal) coding identifies and preserves changes between consecutive frames over time.
The process also utilizes block motion estimation to predict how objects move across the screen. By only transmitting the differences rather than every single pixel for every frame, these methods allow high-quality video to travel over standard internet connections.
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- Summary by Intellect · source: How Video Compression Works
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