Video Stream Reverse Playback via Section Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for transmitting and receiving video data streams struggle with efficiently reversing the sequence of packets while maintaining the original packet sequence, which is necessary for reverse playback of video data, especially in networked environments, leading to complications in transmitting video data in a backward sequence.
Innovation Solution
A transmitting device subdivides video data streams into sections and packets, arranging sections in reverse sequence while maintaining the original packet sequence, and a receiving device decodes and displays these sections in reverse order, enabling efficient reverse streaming of video data over networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If video data streams are transmitted in forward sequence using conventional compression methods, then decoding is straightforward and reliable, but reverse playback requires complex re-encoding and significant memory storage
Solution Approach 1:
The video data stream is segmented into sections, where each section contains a complete intra frame and associated inter frames. This segmentation allows the receiver to independently decode and replay sections in reverse sequence without requiring the entire video stream, thus enabling reverse playback while reducing memory and transmission requirements
Solution Approach 2:
Intra frames are strategically positioned at the beginning of each section before inter frames. This preliminary arrangement ensures that each section is self-contained and can be decoded independently, allowing the receiver to buffer and replay sections in reverse order without needing to store the entire video stream
2Productivity
If sections are arranged in reverse sequence while maintaining original packet sequence, then reverse streaming efficiency is improved, but packet reassembly and section identification become more complex
Solution Approach 1:
Section headers are introduced as intermediary elements that mark the beginning of each section and contain identification information. These headers enable the receiver to easily identify section boundaries and maintain proper sequencing during reverse streaming, simplifying the complex task of reassembling packets in the correct reverse order
Data Source
AI summary
A transmitting device, a receiving device, and a method for transmitting and a method for receiving data streams, in particular video streams, are described. The transmitting device for data streams, in particular video data, has at least one unit. This at least one unit is designed for subdividing the data streams into sections, the sections into packets, and for providing the sections in a sequence that is the reverse of an original sequence and the packets in an original sequence.