Selective Video Transcoding for Precise Timestamp Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing video management systems face challenges in efficiently and accurately providing video data starting at a requested timestamp due to hardware-intensive transcoding processes, often requiring significant computational resources to align frames with the desired start time.
Innovation Solution
A system and method for selective transcoding that decodes and encodes a portion of video data including the start timestamp, appending the remaining frames without full transcoding, allowing for accurate delivery with reduced hardware usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional video systems transcode the entire video data to accurately extract requested portions starting at a specific timestamp, then the accuracy of video data retrieval is improved, but the hardware resource requirements and processing time increase significantly
Solution Approach 1:
The patent segments the video data processing into two distinct parts: (1) transcoding only the necessary portion from the start timestamp to the next key frame, and (2) directly copying the remaining video data without transcoding. This segmentation allows the system to maintain accurate timestamp retrieval while significantly reducing the amount of data subjected to computationally intensive transcoding operations.
Solution Approach 2:
The patent applies partial transcoding by performing the computationally intensive transcoding operation only on the minimal necessary portion of video data (from the requested start timestamp to the next key frame), rather than transcoding the entire video file. This partial action approach maintains retrieval accuracy for the critical start portion while avoiding excessive processing of the remainder.
2Manufacturing precision
If conventional video systems transcode the entire video data to ensure accurate frame alignment with requested timestamps, then the precision of timestamp alignment is improved, but the hardware resource consumption increases
Solution Approach 1:
The patent divides the video processing workflow into a transcoding segment (from start timestamp to next key frame) and a copying segment (remaining video data). This segmentation ensures precise timestamp alignment is achieved only where necessary (in the transcoding portion) while avoiding unnecessary hardware resource consumption in the copying portion.
Solution Approach 2:
The patent applies different processing qualities to different portions of the video data: high-quality transcoding is applied locally to the critical start portion to ensure timestamp alignment precision, while the remaining portions are handled with simpler copying operations, optimizing the balance between precision and resource consumption.
3Measurement precision
If conventional video systems decode and encode the entire video data to provide accurate portions, then the accuracy of video extraction is improved, but the processing time increases
Solution Approach 1:
The patent performs decode and encode operations only on the partial portion of video data necessary to achieve accurate timestamp alignment (from the requested start timestamp to the next key frame), rather than processing the entire video file. This partial processing maintains extraction accuracy while dramatically reducing processing time.
Solution Approach 2:
The patent segments the video data into a processed segment (requiring decode and encode for accuracy) and an unprocessed segment (directly copied). This segmentation eliminates unnecessary processing time for portions of the video that do not require timestamp alignment, while maintaining accuracy where it matters.
Data Source
AI summary
In various examples, systems and methods are disclosed relating to accurately extracting requested portions of video data by concatenating video data with selective transcoding. The systems can receive a request indicating a start position and an end position and select a video data element including the start position. The systems can decode a portion of the video data element including the start position and encode a subset of a plurality of first frames of the video data element to provide a first video output. The systems can combine the first video output with a second video output that includes one or more second frames of the video data up until the end position.