Ad Insertion content - Testcase 4 - Aligned content and period boundaries with ad-slates

[dsilhavy]

A short description of the use case for the new test content.

This test content is supposed to demonstrate the insertion of a midroll ad and an ad-slate in a static MPD. In this testcase the segment- and period boundaries are perfectly aligned (as shown in the Figure below).

Test content requirements

General

• A multiperiod MPD with four periods.
• Period 1 and 4 are continuous, Period 2 is an ad period, Period 3 is an ad-slate period.
• Segment and period boundaries shall be aligned. For instance, audio and video segments can be 1.92 seconds with 25fps and 48khz. The first period might end at 9.6 seconds.
• The duration of each period is no longer than 10 seconds. The ad-slate period should be no longer than the duration of one segment (for example exactly 1.92 seconds).
• All periods contain a single video and a single audio AdaptationSet.
• The content shall be encoded/packaged with CMAF and H.264 avc1
• Segment addressing should include at least:
  • SegmentTemplate with $number$
  • SegmentTimeline with $number$ or $time$
  • If possible: SegmentBase

DASH-IF documents

TaC 2021/03/02

• Conforming to DASH-IF Ad Insertion: https://dash-industry-forum.github.io/docs/CR-Ad-Insertion-r8.pdf
  • IF-5 conforming
  • Follow the MPD Proxy Operation Guidelines in 8.2.7.3
  • Follow the urn:mpeg:dash:profile:cmaf:2019 profile
  • also audio follows the same conditions as video

Relation to CTA WAVE Test Vector database

• For the main content use Tears of Steel.
• For the ad test content use Big Buck Bunny.
• For the slate content create a new content, for instance a spinning logo.

[rbouqueau]

We can remove the following labels after comments in the CTA-WAVE DTCTF call today:

• missing-CMAF-content
• missing-mezzanine

Once I get access to the appropriate information on the Interoperability WG I assume I'll have to regenerate the vectors.

[haudiobe]

We are still missing slate content - see progress here: https://github.com/cta-wave/mezzanine/issues/19