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Test and Conformance for Protected Content #422

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haudiobe opened this issue Jul 18, 2023 · 1 comment
Open

Test and Conformance for Protected Content #422

haudiobe opened this issue Jul 18, 2023 · 1 comment

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@haudiobe
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haudiobe commented Jul 18, 2023

Hi Thomas,

the JCCP team had an internal call today to discuss what we would consider to be in scope of JCCP conformance tests for CMAF clause 8 and 23001-7. Based on your slides specifically the “What to test” section we see strong dependencies to a client-side validation such as the one implemented in CTA-WAVE. The JCCP validation runs on the server side and does not cover any concrete playback tests as this point. This is what we think would be possible:

  • Create test vectors following the specifications as reference streams for validation. Should also include negative test vectors.
  • Test attributes and elements in the manifest which are required according to CMAF clause 8 and 23001-7.
  • Test for specific attributes in the segments, e.g based on information in boxes like pssh, senc, tenc, etc.
  • Request a license on the server side (requires additional data: license server URL, license server headers) and perform a decryption
  • Key rotation
    • Verify that the key changes, e.g. every 60 second
    • Important: Currently live streams are not supported by the JCCP tool. This is an essential addition to the tools and would also benefit non-DRM live streams.
  • Integration of an additional segment validator as the current segment validator crashes on DRM protected stream. Probably GPAC would be good.
  • Potentially link the JCCP results to a CTA-WAVE playback test. That way we can cover most of the playback related tests.

It would be good to setup a call to get your thoughts and feedback and understand the concrete requirements. As there is an MPEG meeting this week, we suggest doing this call next week.

We created a Doodle to find a suitable slot: https://doodle.com/meeting/participate/id/eZ0G6XRb

Best
Daniel

@jpiesing
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Please do not forget HbbTV's extensive investment in DASH+DRM test streams.
You can see all the streams at https://refapp.hbbtv.org/videos/
@juhajoki @Murmur

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