Live Broadcast Media Proxy System for Latency Reduction
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Solution Overview
Problem
Live television broadcasting faces significant delays due to limited bandwidth at venues, restricting the number of media streams and resolution that can be transmitted, and the technical director's remote location introduces further latency in decision-making, affecting the real-time experience for end consumers.
Innovation Solution
A system that employs object-based analysis and low latency streaming technologies to generate high-speed media proxies, allowing for real-time capture and coherent presentation of media streams to the technical director with minimal delay, enabling cloud-based production and co-location of transmission with production, thereby reducing latency and increasing bandwidth efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional encoding and transmission methods are used, then media quality can be maintained, but transmission delay increases and bandwidth consumption increases
Solution Approach 1:
The patent segments the video stream into multiple sub-streams with different encoding parameters (resolution, bitrate, frame rate). This allows selective transmission of optimized sub-streams that balance quality and bandwidth usage, reducing overall transmission delay while maintaining acceptable media quality.
Solution Approach 2:
The system dynamically changes encoding parameters (resolution, bitrate, frame rate) based on network conditions and priority levels. High-priority streams use lower compression ratios for faster transmission, while lower-priority streams use higher compression to conserve bandwidth, thereby reducing transmission delay without excessive bandwidth consumption.
2Adaptability or versatility
If multiple media streams are transmitted to enable comprehensive production control, then production capabilities improve, but available bandwidth is exceeded and latency increases
Solution Approach 1:
The patent creates proxy copies of media streams at the venue with reduced resolution and bitrate. These proxy streams consume minimal bandwidth and can be transmitted to multiple destinations simultaneously, enabling comprehensive production control with multiple cameras and angles without exceeding bandwidth limits or introducing significant latency.
Solution Approach 2:
The system transmits media in multiple dimensional formats - full-resolution local copies for immediate use, compressed proxy streams for remote production, and selective sub-streams for specific functions. This multi-dimensional approach enables comprehensive production capabilities while managing bandwidth and latency through differentiated transmission paths.
3Manufacturing precision
If high resolution encoded signals are transmitted, then media quality is improved, but bandwidth consumption increases and latency periods become unacceptable
Solution Approach 1:
The patent applies different quality levels to different parts of the system - full HD quality is maintained locally at the production venue where bandwidth is available, while compressed proxy versions are transmitted remotely. This local quality preservation allows high media quality without the bandwidth and latency penalties of transmitting full-resolution streams over long distances.
4Ease of operation
If the technical director is located remotely at a production facility, then production safety and comfort improve, but control signal latency increases
Solution Approach 1:
The system pre-transmits proxy media streams and control interfaces to the remote production facility before they are needed. This preliminary action allows the technical director to have immediate access to control interfaces and media previews, reducing perceived latency even though physical distance remains. The proxy streams are prepared in advance so control decisions can be made without waiting for real-time transmission.
Data Source
AI summary
A system and method is provided for minimizing delay time for controlling media content capture during live video broadcast production. The system includes a video production receiver that receives media content streams from one or more cameras that includes live media content captured by the cameras and encoded in a first encoding format. Moreover, a multi-view interface displays the media content and a video production controller generates control instructions based on inputs to the interface to change operation of the cameras capturing the respective media content. A camera controller is included that transmits the generated control instructions to the cameras to change the operation for capturing the respective media content. Moreover, the video production controls production of a live video stream for video broadcast production using media content that is captured from the cameras and that is encoded in a second encoding format different than the first encoding format.