Metadata embedding methods and XML namespaces are in the works for the VoMer system. Please stay tuned…
Currently we’re researching Dublin Core®, MPEG-7, and SMPTE methods.
With regard to DCI (Digital Cinema Initiatives) DCP mastering, metadata is very straightforward. The CPL (Composition Playlist) section of the DCP (Digital Cinema Package) is an XML, human readable header that has a field called ‘Rating.’
This is where the VoMeR rating code shall be included.
With regard to ATSC transport streams, the recommended practice is placing VoMeR rating information into the PSIP‘s (Program and System Information Protocol) RRT (Rating Region Table). { dimension_name=”VoMeR”; dimension_index=[highest number of rating dimensions used]; grad=”0″ } Content Advisory Descriptor information to be defined. VoMeR Rating enumerations for the RRT are below.
| ATSC RRT rating enumerations: VoMeR | |
| code (hex) | rating |
| 0×0 | Ev |
| 0×1 | wA < 6 |
| 0×2 | wA < 8 |
| 0×3 | wA < 10 |
| 0×4 | wA < 12 |
| 0×5 | wA < 13 |
| 0×6 | wA < 14 |
| 0×7 | wA < 17 |
| 0×8 | Rc < 12 |
| 0×9 | Rc < 13 |
| 0xA | Rc < 14 |
| 0xB | Rc < 15 |
| 0xC | Rc < 16 |
| 0xD | Rc < 17 |
| 0xE | Rc < 18 |
| 0xF | [reserved] |
With regard to the MP4 media container, it is possible to use typical metadata editors to write rating codes into the files. However, there is not yet a consensus on which metadata fields to use. We’re working on it though.
With regard to iPhone and Android apps, we’re also researching metadata methods.
If you wish to volunteer to help define these methods, please get in contact.
Please note that the system is ready to use in low-tech mode (graphics and text).
