IP Packet Multimedia Content Transmission via Segmented mdat
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Solution Overview
Problem
Current digital broadcast methods, such as MPEG-2 TS, are inefficient for transmitting high-resolution multimedia content over IP networks due to their fixed packet length, which hinders the transmission of advanced formats like stereo 3D video, UHD, and hologram broadcasts.
Innovation Solution
A method and device for converting multimedia content between file formats and delivery formats, using IP packets, where the file format includes an ftyp box for file type information, an mdat box for audio or video data, and a moov box for metadata, allowing for efficient transmission and storage by cutting mdat segments into time windows and including them in IP packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MPEG-2 TS with fixed 188 byte packet length is used for transmission, then transmission compatibility is maintained, but transmission efficiency for high-resolution content deteriorates
Solution Approach 1:
The patent segments the fixed-length MPEG-2 TS packets into flexible-length IP packets. By dividing the content into variable-size packets that can be efficiently packed into IP protocol structures, the system achieves better utilization of network bandwidth while maintaining compatibility through standard IP encapsulation methods.
Solution Approach 2:
The patent changes the packet length parameter from fixed (188 bytes) to variable, allowing optimization for different content types and resolutions. This parameter change enables the transmission system to adapt to high-resolution content requirements while maintaining interoperability through standardized IP protocol parameters.
2Loss of information
If file format with complete metadata (ftyp, mdat, moov boxes) is used, then content information completeness is improved, but transmission overhead increases
Solution Approach 1:
The patent extracts only the essential metadata elements (ftyp, mdat, moov boxes) required for content identification and playback from the complete file structure. By taking out only the necessary information elements and transmitting them separately from the main content data, the system reduces redundant overhead while preserving content integrity.
Solution Approach 2:
The patent performs preliminary processing of the file format by pre-organizing and pre-compressing metadata before transmission. The ftyp, mdat, and moov boxes are prepared in advance with optimized structures, reducing the computational overhead during actual transmission and enabling faster content delivery.
3Loss of time
If mdat is cut according to time window for sequential transmission, then real-time transmission capability is improved, but conversion complexity increases
Solution Approach 1:
The patent segments the mdat (media data) according to time windows into discrete chunks that can be transmitted sequentially in real-time. Each time-window segment is independently packaged and transmitted, enabling progressive content delivery while maintaining manageable conversion complexity through standardized segmentation logic.
Data Source
AI summary
The present invention relates to a method for transmitting/receiving through a network such as the Internet, and to a transmitter/receiver using same, the transmission method comprising: converting content stored in a file format into a delivery format; and including the content converted into the delivery format in a payload of an IP packet and transmitting same, wherein one or more mdats, which are included in an mdat box of the file format, are cut according to a time window and sequentially included in the delivery format in the transforming step.