Dynamic Transcoder Allocation for Live Video Streaming
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Solution Overview
Problem
Conventional video streaming systems continue to transcode live video streams even when no users are watching, leading to unnecessary resource usage and increased bandwidth, as transcoders do not dynamically allocate resources based on viewer demand.
Innovation Solution
An intelligent video streaming system that includes a video controller capable of dynamically allocating transcoders from a pool of available transcoders only when a user requests to view a live stream, allowing for efficient resource management by transcoding and releasing resources when no users are viewing the stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transcoders continuously transcode live video streams regardless of viewer demand, then video streams are always ready for immediate playback, but resource usage and bandwidth consumption increase unnecessarily
Solution Approach 1:
The system dynamically adjusts transcoder allocation based on real-time viewer demand. When a viewer requests a channel, transcoders are allocated to transcode the stream. When no viewers are present, transcoders are released back to the pool. This dynamic provisioning resolves the contradiction by making resource usage adaptive rather than static.
Solution Approach 2:
The system pre-establishes a pool of available transcoders that can be quickly allocated when needed. While these transcoders remain idle in the pool, they are ready for immediate deployment when a viewer requests a channel, ensuring stream availability without requiring continuous active transcoding of all possible channels.
2Adaptability or versatility
If transcoders are allocated for every possible channel, then any channel can be viewed immediately, but bandwidth and processing resources are wasted on inactive streams
Solution Approach 1:
The system implements self-service through automated transcoder allocation and release. When a viewer requests a channel, the video controller automatically allocates a transcoder from the available pool. When the channel becomes inactive, the transcoder is automatically released. This eliminates the need for continuous manual management and resolves the contradiction by providing on-demand service rather than pre-allocation for all channels.
Solution Approach 2:
The transcoder pool serves multiple channels sequentially rather than being dedicated to single channels. Each transcoder in the pool can be allocated to different channels based on demand, making the transcoding infrastructure universal and adaptable to various channel requirements without wasting resources on inactive streams.
3Use of energy by moving object
If the system waits for viewer requests before allocating transcoders, then resource usage is minimized, but stream startup time increases when transcoders must be allocated on demand
Solution Approach 1:
The system performs preliminary preparation by maintaining a pool of transcoders in a ready state, pre-configured and available for immediate allocation. This preliminary action ensures that when a viewer requests a channel, the transcoder can be allocated instantly without startup delays, while still minimizing resource usage compared to having all transcoders actively processing continuously.
Data Source
AI summary
A system for intelligent video streaming a video controller having at least one processor and non-transitory computer readable media having a set of instructions executable by the at least one processor to receive a playback request from a user device for a live stream, determine, from the playback request, whether source streaming content for the live stream is being transcoded, and allocate an available transcoder to transcode the source streaming content. The system further includes a transcoding having at least one processor and non-transitory computer readable media having a set of instructions executable by the at least one processor to join the multicast stream, retrieve the source streaming content, and transcode the source streaming content, and provide transcoded streaming content for delivery to the user device.