Ad Insertion content - Testcase 1 - Aligned content and period boundaries #1

dsilhavy · 2021-03-01T10:32:23Z

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 in a static MPD. In this testcase the segment- and period boundaries are perfectly aligned (as shown in the Figure below).

Test content requirements

A multiperiod MPD with three periods
Period 1 and 3 are continuous, Period 2 is an ad 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.
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

Relation to CTA WAVE Test Vector database

For the main content use Tears of Steel.
For the ad test content use Big Buck Bunny.

The text was updated successfully, but these errors were encountered:

haudiobe · 2021-03-02T09:30:17Z

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

TobbeEdgeware · 2021-03-02T16:50:56Z

The proposed content is 24Hz. I'd suggest to convert to 25Hz in order to get same frame rate as used for live including the nx1.92s segment duration.

jpiesing · 2021-03-04T09:04:45Z

@juhajoki @Murmur This looks very like what you are working on ....

Murmur · 2021-03-04T14:05:58Z

@jpiesing this is a static mpd manifest I believe, meaning all <Period> elements are available on initial manifest load. No type=dynamic refresh events, no injection of new periods at runtime on new mdp reload event.

This topic still gives good details about the alignments, such as video(h264) an audio(aac) segments to have an equal perfect segment durations. This is something not easy to get with an integer 2,3,4,.. sec segments for aac codec.
AAC audio frame samples is 1024 per packet

rbouqueau · 2021-04-14T19:29:56Z

Here are some streams to start with:

Only the synthetic counter version plays well in dash.js at the moment.

rbouqueau · 2021-04-19T14:45:01Z

I could improve the generation process. Here is a new batch of files.

Configurations:
a. one encoder for the main content, one encoder for the ad content
b. different encoders
c. one encoder for the 3 periods (counter content only)

Counter:
a. (known issue on first period duration) https://reference.dashif.org/dash.js/v4.0.0-alpha/samples/dash-if-reference-player/index.html?mpd=https://dash.akamaized.net/dashif/ad-insertion-testcase1/batch2/counter/a/ad-insertion-testcase1.mpd
a. https://reference.dashif.org/dash.js/v4.0.0-alpha/samples/dash-if-reference-player/index.html?mpd=https://dash.akamaized.net/dashif/ad-insertion-testcase1/batch2/counter/b/ad-insertion-testcase1.mpd
a. https://reference.dashif.org/dash.js/v4.0.0-alpha/samples/dash-if-reference-player/index.html?mpd=https://dash.akamaized.net/dashif/ad-insertion-testcase1/batch2/counter/c/ad-insertion-testcase1.mpd

Real (ToS+BBB):
a. https://reference.dashif.org/dash.js/v4.0.0-alpha/samples/dash-if-reference-player/index.html?mpd=https://dash.akamaized.net/dashif/ad-insertion-testcase1/batch2/real/a/ad-insertion-testcase1.mpd
b. https://reference.dashif.org/dash.js/v4.0.0-alpha/samples/dash-if-reference-player/index.html?mpd=https://dash.akamaized.net/dashif/ad-insertion-testcase1/batch2/real/b/ad-insertion-testcase1.mpd

I'm still working on it.

Murmur · 2021-04-23T09:55:23Z

Is it a mistake to have <BaseURL>https://dash.akamaized.net/dashif/ad-insertion-testcase1/batch2/counter/b/ad-insertion-testcase1.mpd</BaseURL> value ending to a manifest.mpd as well?

Can you provide your ffmpeg+mp4box command lines for creating this content such as CMAF and 1.92s segmenting?

rbouqueau · 2021-04-23T12:32:26Z

Is it a mistake

Yes, thanks for reporting!

Can you provide your ffmpeg+mp4box command lines for creating this content such as CMAF and 1.92s segmenting?

See here https://github.com/Dash-Industry-Forum/Test-Content/blob/e31b16f3fd188b00988de2906910f40c23fb98e2/ad-insertion-testcase1.sh. I've just created the PR.

NB1: it uses one-liner commands using GPAC only (wherever possible).

NB2: the refresh time of the server is quite long. So fixes may take time to apply.

rbouqueau · 2021-04-27T08:05:36Z

Comment from today's call: favour this client version: https://reference.dashif.org/dash.js/nightly/samples/dash-if-reference-player/index.html

dsilhavy · 2021-05-11T08:12:23Z

I did a check in dash.js and Shaka, please find the test results and observations here:
https://docs.google.com/spreadsheets/d/1OLRzskFmO5yL_kJpF6cILrO_uy-USrTmvsWZHEgqgtw/edit

Murmur · 2021-05-14T06:23:09Z

We have done this multiperiod(main content, adverts, static mpd) a little over a year ago. We also test manifest events on this one. Feel free to test run but nightly build most likely stalled at 1m55s in a main content(after first adverts, see burn-in timestamp).
https://refapp.hbbtv.org/videos/00_llama_multiperiod_v1/manifest.mpd
https://reference.dashif.org/dash.js/nightly/samples/dash-if-reference-player/index.html

We are compiling a similar scenario for a dynamic(live) test content.

rbouqueau · 2021-05-24T12:16:04Z

@dsilhavy the @MediaPresentationDuration was not referenced in the document but is fixed. Still working on the other items.

rbouqueau · 2021-05-28T15:50:30Z

@dsilhavy I checked the duration of the periods and they seem ok.

To dump the mpd as a file I used gpac -i URL.mpd -o file.mp4. And I used MP4Box -info to inspect the durations.

I'm going to generate a new batch of files soon.

The other mandatory points should be fixed so I generated a batch3:

rbouqueau · 2021-05-29T14:20:23Z

dsilhavy · 2021-06-07T11:45:12Z

@rbouqueau Thanks for the new vectors, I added a second tab to the Spreadsheet: https://docs.google.com/spreadsheets/d/1OLRzskFmO5yL_kJpF6cILrO_uy-USrTmvsWZHEgqgtw/edit#gid=498241230

Overall it looks good, I see a minor problem in dash.js having a small gap in the end for all testvectors.

https://dash.akamaized.net/dashif/ad-insertion-testcase1/batch4/real/a/ad-insertion-testcase1.mpd has a major issue between period 2 and 3 in both dash.js and Shaka. Might be related to differences between PTO and tfdt->bmdt in the audio segments.

rbouqueau · 2021-06-08T06:59:25Z

I think I fixed the real/a content: https://dash.akamaized.net/dashif/ad-insertion-testcase1/batch5/real/a/ad-insertion-testcase1.mpd

To summarize, since the AUs boundaries are exactly where we cut the Periods, working in the encoded or raw domain shouldn't make any difference. But it does so I switched to raw.

I also applied the same patch in an attempt to fix the Jumping to end of stream because of gap from 28.677133 to 28.8. Gap duration: 0.1228669999999994 messages. I'd be happy if we could have a look together at what's happening. An inspection of the content shows that the durations seem fine but I may be missing something.

dsilhavy · 2021-06-08T12:55:28Z

@rbouqueau Thanks for the feedback.

Regarding gap jumping:

Jumping to end of stream because of gap from 28.677133 to 28.8. Gap duration: 0.1228669999999994

The problem was that we did not call MSE.endOfStream if the last period was prebuffered once the previous period is still playing. This fixed here Dash-Industry-Forum/dash.js@a1297a2 . Changes should be visible in nightly.

rbouqueau · 2021-06-09T19:58:31Z

Batch5:

Seems like the logs are happy. I'm seeing something that looks like a clock rectification between Periods #2 and #3 on counter/b (second link). Can you see it also?

rbouqueau · 2021-09-14T18:53:01Z

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 · 2021-10-05T08:10:50Z

Test content is good - needs to be published and announced, please add to data base.

rbouqueau · 2021-10-14T12:35:04Z

Added to database: https://testassets.dashif.org/#testcase/details/61681dfa06d983046b7d4140

haudiobe · 2021-11-12T10:12:30Z

Test Call 2021/11/12:

@rbouqueau thanks

haudiobe · 2021-12-14T09:35:34Z

This one is available - announce to DASH-IF IOP

dsilhavy added the request Request for a new test content label Mar 1, 2021

haudiobe added missing-CMAF-content CMAF content is missing missing-mezzanine Mezzanine content is missing prio-high High Priority dash-if-agreed Requested by DASH-IF test team (don't mess with it, otherwise you are in trouble) labels Mar 2, 2021

jpiesing mentioned this issue Mar 4, 2021

8.8 Playback over WAVE Baseline Splice Constraints cta-wave/dpctf-tests#22

Closed

rbouqueau mentioned this issue Apr 23, 2021

Ad Insertion content - Testcase 1 (initial testcase) #5

Merged

haudiobe removed missing-mezzanine Mezzanine content is missing missing-CMAF-content CMAF content is missing request Request for a new test content labels Oct 5, 2021

haudiobe added add-to-database Needs to be added to DASH-IF Test content data base approved DASH-IF approved test vector and removed prio-high High Priority labels Oct 5, 2021

haudiobe added available Test vector is available and removed add-to-database Needs to be added to DASH-IF Test content data base labels Nov 12, 2021

haudiobe closed this as completed Dec 14, 2021

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Ad Insertion content - Testcase 1 - Aligned content and period boundaries #1

Ad Insertion content - Testcase 1 - Aligned content and period boundaries #1

dsilhavy commented Mar 1, 2021

haudiobe commented Mar 2, 2021

TobbeEdgeware commented Mar 2, 2021

jpiesing commented Mar 4, 2021

Murmur commented Mar 4, 2021

rbouqueau commented Apr 14, 2021

rbouqueau commented Apr 19, 2021

Murmur commented Apr 23, 2021

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Ad Insertion content - Testcase 1 - Aligned content and period boundaries #1

Ad Insertion content - Testcase 1 - Aligned content and period boundaries #1

Comments

dsilhavy commented Mar 1, 2021

haudiobe commented Mar 2, 2021

TobbeEdgeware commented Mar 2, 2021

jpiesing commented Mar 4, 2021

Murmur commented Mar 4, 2021

rbouqueau commented Apr 14, 2021

rbouqueau commented Apr 19, 2021

Murmur commented Apr 23, 2021

rbouqueau commented Apr 23, 2021

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