Video Transcoding Subsystem Key Frame Segmentation
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Solution Overview
Problem
Current video transcoding methods require re-transcoding of entire media asset media, leading to increased resource consumption, transcoding costs, and long transcoding times when adding new bitstreams, disrupting continuous video playback.
Innovation Solution
A method where the media asset subsystem sends the content source film to a transcoding subsystem to generate a medium file for the new bitstream, using existing bitstream information to ensure continuity and efficiency, reducing the need for re-transcoding all bitstreams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If re-transcoding of all bitstreams is performed to add a new bitstream, then continuity of video playing is ensured, but transcoding resource consumption and costs increase
Solution Approach 1:
The patent segments the transcoding process by identifying and processing only the necessary portion (from the last key frame) rather than re-transcoding the entire bitstream. This allows adding a new bitstream while avoiding full re-transcoding of all existing content, thus reducing resource consumption while maintaining playback continuity through proper key frame synchronization.
Solution Approach 2:
The patent performs preliminary analysis to identify the location of the last key frame before transcoding. By determining this starting point in advance, the system prepares the minimal necessary segment for re-transcoding, ensuring continuity requirements are met while minimizing the actual transcoding workload and resource consumption.
2Reliability
If re-transcoding of all bitstreams is performed to add a new bitstream, then continuity of video playing is ensured, but transcoding time increases
Solution Approach 1:
The patent divides the video bitstream into segments based on key frame locations, identifying that only the segment from the last key frame needs re-transcoding. This segmentation approach dramatically reduces the time required compared to re-transcoding the entire bitstream, while still ensuring continuity by maintaining proper key frame alignment in the new bitstream.
Solution Approach 2:
The system performs preliminary key frame detection and segment identification before the actual transcoding operation. By pre-determining the exact starting point and scope of required re-transcoding, the system minimizes unnecessary processing time while ensuring that continuity requirements are satisfied through proper key frame positioning.
3Reliability
If re-transcoding of all bitstreams is performed to add a new bitstream, then completeness of media asset medium is ensured, but release efficiency decreases
Solution Approach 1:
The patent implements segmentation by identifying that only a specific segment of the bitstream (from the last key frame onwards) requires re-transcoding to maintain completeness. This selective approach allows the media asset medium to remain complete and functional while significantly improving release efficiency by avoiding unnecessary re-processing of the entire content library.
Solution Approach 2:
The system performs preliminary analysis to identify the minimal segment requiring re-transcoding to maintain media asset completeness. By pre-determining this scope, the system can quickly process and release new bitstreams without sacrificing the completeness or integrity of the media asset medium, thus improving overall release efficiency.
Data Source
AI summary
This disclosure relates to the field of video processing technologies. The method includes: receiving, by the media asset subsystem, an indication message, where the indication message is used to indicate to add a medium file corresponding to a second video stream to the target media asset medium; obtaining a content source medium of the target video based on the indication message; sending the content source medium of the target video to a transcoding subsystem, so that the transcoding subsystem generates the medium file corresponding to the second video stream, where first information of the second video stream is the same as first information of the first video stream, and the first information includes whether a key frame is an IDR frame and location information of the key frame; and receiving the medium file that corresponds to the second video stream and that is sent by the transcoding subsystem.