IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 THE CURRENT APPROACH ISSUES SONY PICTURES’ PROPOSAL IMPACTS TO CURRENT APPROACH SUGGESTED STEPS FORWARD SUMMARY
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 THE CURRENT APPROACH
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 THE CURRENT APPROACH • Create a set of core components that do not include essence specifics. • Create a series of complete applications that satisfy specific use cases. Picture Codec specific: Uncompressed, J2K, SStP , H.264, MPEG Long GOP…. • Audio Codec specific: LPCM, AC3, AAC, Dolby E, DTS-HD, AES3 bitstream….. • • Pull out the items which are common from these applications into the core. • An Application then refers to the core components and adds to them or constrains them further. • An IMF device may support any of these Applications (any one or more).
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 ISSUES WITH THE CURRENT APPROACH There is not one application that ALL IMF devices must support, which • prevents interoperability. For example, one piece of equipment could support “ IMF Applications 2 and • 5 ” and another piece of equipment could support “ IMF Applications 3 and 4 ” and both would be considered IMF devices. A given IMF is only usable on devices that support the Application under • which it was created.
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SONY PICTURES ’ PROPOSED SOLUTION: THE IMF CORE APPLICATION
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SPE PROPOSAL FOR THE IMF CORE APPLICATION Sony Pictures’ position is that there needs to be an IMF Core Application that all IMF equipment must support at a minimum in order to make the Interoperable Master Format interoperable . The IMF Core Application should be based on the concepts that the original proponents brought forward into SMPTE coupled with the excellent work that is currently underway. Application Extensions are a welcome addition to IMF functionality and may be added over time as proponents bring them forward.
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SPE PROPOSAL FOR THE IMF CORE APPLICATION The focus of the IMF effort at this time should be standardizing the exact specifications of the IMF Core Application. Application Extensions may be brought forward in parallel but should not in any way dilute or delay this initial effort to standardize the IMF Core Application.
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SPE PROPOSAL FOR THE IMF CORE APPLICATION IN SUMMARY: The IMF Core Application should solve the problem that the original proponents intended to solve. Proponents desiring additional solutions should write extensions to the IMF Core Application.
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SONY PICTURES’ PROPOSED APPROACH 1. Create an IMF Core Application that ALL IMF devices must support at a minimum. 2. Create a series of “ Application Extensions ” that add additional functionality to the IMF Core Application. Example extensions may include: Additional picture codecs • Support for audio codecs • Support for text/data not included in core •
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SONY PICTURES’ PROPOSED APPROACH 3. IMF Devices must support the IMF Core Application and may optionally support one or more of the Application Extensions. IMF Read-Only tools must be able to read an IMF created to the IMF • Core Application Specification and may optionally be able to read one or more of the application extensions. IMF Authoring tools must be able to read and write an IMF to the IMF • Core Application Specification at a minimum and may optionally be able to create one or more of the application extensions. SPE would prefer that IMF Read/Play devices be able to read all current Ø application extensions.
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 IMF CORE APPLICATION: OVERVIEW OF SPECIFICATIONS • Frame Rates • 23.976, 24.00, 25.00, 29.97, 30, 48, 50, 59.94, 60 • Image Essence Parameters • HD and SD minimum. Resolutions should be extensible up to UHD. • 2K and 4K will need to be supported in the very near future. • Bit Depth: 10 bits • Colorimetry: Rec.709, Y’C’bC’r, R’G’B’, Rec 601 Y’C’bC’r • Component Sampling: 4:2:2, 4:4:4 • Progressive and Interlace
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 IMF CORE APPLICATION: OVERVIEW OF SPECIFICATIONS • Image file formats • Uncompressed: Generic Container, DPX • Compressed: JPEG 2000 part one, Broadcast Profiles 2-5 minimum • Audio • 2’s complement LPCM • 24 bit data word • 47.952K, 48K, 95.904K, 96K sampling rates • All other constraints currently in IMF audio documents • Audio MXF track labeling per the MCA Labeling Framework
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 IMF CORE APPLICATION: OVERVIEW OF SPECIFICATIONS Ø Data Essence, CPL/OPL, Wrapping, Security and Packaging should continue as is.
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 IMPACTS ON THE CURRENT APPROACH Changes the slant on the current concept of “core” to being a complete • application rather than only some common pieces. Changes the slant on the current concept of “applications” to be • application extensions rather than full applications or application constraints. Note that items in the IMF Core that cannot be supported using a • particular application extension would be constrained in that application extension by nature. An example may be a raster size that a particular codec does not support that is supported in the IMF core.
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 IMPACTS ON THE CURRENT APPROACH Requires that ALL IMF equipment support AT LEAST the core application at a • minimum. IMF equipment can still support additional application extensions past • the core application as desired. Adds Image Essence and Image File Formats to “core”. • Some impact on audio • No impact on Data Essence, CPL/OPL, Wrapping, Packaging or Security •
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SUGGESTED STEPS FORWARD TO CREATE THE IMF CORE APPLICATION: Use all existing core work (Data Essence, CPL/OPL, Wrapping, etc.) • Use existing audio work and continue on current path • Use the majority of “Application 2” • Add “Application 1” (Uncompressed image) • Add any additional science not covered in the above •
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SUGGESTED STEPS FORWARD TO CREATE APPLICATION EXTENSIONS: Codify the unique science of the application extension that is different from • IMF Core into standards text Codify any constraints that are necessary to use the application extension • Reference IMF Core documents for all common science •
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 SUMMARY A new approach is needed to arrive at a truly interoperable format • The IMF Core Application and Extensions concept is robust and extensible • Focusing effort on the IMF Core Application will bring a usable standard • forward sooner Specific use cases will be handled by those proponents writing Application • Extensions which will add that specific functionality All science from existing work remains intact-nothing is lost •
IMF CORE APPLICATION SONY PICTURES PRESENTATION 2011-12-06 THANK YOU!
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