Interleaved Transport Stream File for 3D Video Playback
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Solution Overview
Problem
Current methods for recording 3D images on optical discs face challenges in ensuring compatibility with both 2D and 3D playback devices, leading to issues with bit rate allocation and playback stability, particularly when trying to store left-view and right-view video streams on a single disc for stereoscopic playback.
Innovation Solution
A recording medium is developed that includes playlist information and stream files, where the left-view and right-view video streams are interleaved in a transport stream file, identified by a combination of an equivalent identification number and file extension, allowing for seamless playback on both 2D and 3D devices without the need for separate storage formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If left-view and right-view video streams are multiplexed at the level of TS packet and recorded as one transport stream, then the recording format is simple, but the bit rates assigned to left-view and right-view video streams are low which deteriorates image quality
Solution Approach 1:
The invention segments the transport stream into separate left-view and right-view video stream files, each with its own continuous arrival time stamp sequence. This segmentation allows each video stream to be stored with adequate bit rate without multiplexing constraints, while the playlist information coordinates their sequential playback to achieve stereoscopic effect.
2Quantity of substance
If left-view and right-view video streams are stored into different transport stream files, then the bit rates for each stream are ensured, but the streams cannot be stored into one optical disc for single product distribution
Solution Approach 1:
The invention merges the storage of left-view and right-view video streams into a single optical disc by using a unified file system structure with separate transport stream files for each view. The playlist information file coordinates both streams, enabling them to be distributed as one product while maintaining individual bit rate quality.
3Quantity of substance
If left-view and right-view video streams are converted into interleave format transport stream, then the bit rates are ensured, but the Arrival Time Stamps values are not continuous causing irregular changes during playback which prevents normal operation on 2D playback devices
Solution Approach 1:
The invention segments the interleaved transport stream into separate left-view and right-view stream files, each maintaining continuous arrival time stamp sequences. This segmentation ensures that when a 2D playback device reads either stream independently, the continuous ATS values enable normal operation, while the playlist information coordinates both streams for 3D playback.
4Reliability
If separate 2D and 3D playlists are maintained, then playback compatibility is ensured, but the system complexity and cost increase
Solution Approach 1:
The invention creates a universal playlist information file that serves dual purposes: it coordinates 3D stereoscopic playback by referencing both left-view and right-view stream files, and enables 2D playback by selectively reading one stream. This single playlist structure eliminates the need for separate 2D and 3D playlists, reducing system complexity while maintaining compatibility.
Data Source
AI summary
A recording medium in which a left-view video stream and a right-view video stream are recorded in an interleaved transport stream file. The interleaved transport stream file is identified by a combination of (i) an equivalent identification number being equivalent with the file reference information and (ii) a file extension indicating that video streams are stored in the interleaved manner, the equivalent identification number. Among Extents that constitute the interleaved transport stream file, Extents constituting the left-view or right-view video stream are identified as a normal-format transport stream file by a combination of (i) the equivalent identification number being equivalent with the file reference information and (ii) a file extension indicating that video streams are stored in a normal manner.