IPTV Recording Terminal Media File Error Repair via Bidirectional Network
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Solution Overview
Problem
Existing methods for repairing media file recording errors in IPTV video recording services are unreliable and inefficient, particularly in satellite and terrestrial transmission networks, where interference and external factors lead to recording errors that are not completely mitigated by current error correction and stability enhancement techniques.
Innovation Solution
A method and system that involves a recording terminal and network server communicating through a bidirectional network to identify and repair media file recording errors by generating and sending description information about the error type, location, and adjacent correct data, allowing for precise repair of lost or damaged frames or fragments, reducing the need for retransmitting entire files and improving bandwidth utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the same program is recorded in subsequent time segments to repair recording errors, then the repair can be performed, but the reliability of repairing is low because it depends on existence of the same program in different time segments
Solution Approach 1:
The patent creates a copy of the correct video frame from the head-end and sends it to the recording terminal to replace the lost or damaged frame. This copying approach ensures reliable repair because the correct frame data is directly reproduced and transmitted, eliminating dependence on finding the same program in subsequent time segments.
Solution Approach 2:
The patent introduces a bidirectional communication channel as an intermediary between the recording terminal and the head-end. This intermediary enables the recording terminal to request and receive correct frame data directly, improving repair reliability by providing a dedicated repair path independent of program scheduling.
2Reliability
If entire files are retransmitted to repair recording errors, then complete repair is achieved, but line bandwidth consumption increases significantly
Solution Approach 1:
The patent extracts only the specific lost or damaged frame data from the complete video stream and transmits only this extracted portion to the recording terminal for repair. This selective extraction approach maintains high repair accuracy while dramatically reducing bandwidth consumption compared to retransmitting entire files.
Solution Approach 2:
The patent segments the video stream into individual frame units, enabling independent identification, request, and transmission of only the defective frames. This segmentation allows the system to repair recording errors at the frame level rather than file level, optimizing bandwidth utilization while maintaining repair completeness.
Data Source
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AI summary
A method, a recording terminal, a server, and a system for repairing media file recording errors are disclosed in embodiments of the present invention. The method includes: generating description information about a recording error when a recording terminal identifies the recording error in live recording of a media file; sending a recording error repair request that carries the description information to a network device; and repairing the media file recorded by the recording terminal according to repair information when receiving the repair information sent by the network device according to the description information. With the present invention, the recording errors are repaired through a bidirectional network between the recording terminal and the network device, and reliability of repairing the recording errors is ensured.