[MPTF] Proposed suggests for the MPTF requirements

Hello Clarke,

Here is the proposed text for the slides relating to suggestions on adaptive streaming and content protection. Note I did not manage to find "errors" when it comes to adaptive streaming. It felt more like an exachange of information rather than an error. I believe that the errors are fairly well covered. This may be simply an issue of interpretation.

Regards,
JanL


Slide 4, R7 Adapative Bit Rate Parameters
Suggested changes:
- Receive events on change in representation of adaptive stream like quality.  This information provides statistics as to what representations were used and at which bandwidth for a given content.
- Receive events on change of periods of adaptive streaming. If live content has different manifests over time this event describes what future representations are available which allow change set limits as described below.
- Set limits on adaptive streaming upper and lower limits representations. The limits help provide a better video rendering experience and can be used depending on circumstances.
[This example is taken from OIPF DAE specification. Refer to Section 7.14.8 Extensions to A/V Control object for UI feedback of buffering A/V content]
http://www.oipf.org/docs/Release2/V2.1/OIPF-T1-R2-Specification-Volume-5-Declarative-Application-Environment-v2_1-2011-06-21.pdf

Slide 6, R10 Content Protection Parameters
Suggested changes:
- Retrieve DRM system information like DRM system is ready, it is initializing, error, etc.
- Exchange DRM related messages with the underlying DRM system.
- Result on exchange of DRM related messages if exchange is successful or an error occured. Errors may include user consent is required, unknown DRM sytem id for incoming content, wrong format, etc.
[This example is taken from OIPF DAE specification. Refer to Section 7.6 on Content Service Protection]
http://www.oipf.org/docs/Release2/V2.1/OIPF-T1-R2-Specification-Volume-5-Declarative-Application-Environment-v2_1-2011-06-21.pdf

Slide 7, R11 Content Protection Errors:
Suggested changes:
Receive errors from DRM system and receive additional information like DRM rights URL for retrieval of keys. Errors may include
- No license
- Invalid license
- Valid license
[This example is taken from OIPF DAE specification. Refer to Section 7.13.6 on Extension to video/broadcast for DRM rights errors]
http://www.oipf.org/docs/Release2/V2.1/OIPF-T1-R2-Specification-Volume-5-Declarative-Application-Environment-v2_1-2011-06-21.pdf