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add files from m67097. EMSG. Unified Streaming #136

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add files from m67097. EMSG. Unified Streaming #136

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8ff8147
add files from m67097 but rename files
podborski May 9, 2024
a1a4e1c
add more description from m67097
podborski May 10, 2024
7dceeef
Merge branch 'main' into m67097_eventmsg
DenizUgur Nov 6, 2024
fa0126b
Add file features for m67097_eventmsg
github-actions[bot] Nov 6, 2024
cbf74ba
Merge branch 'main' into m67097_eventmsg
DenizUgur Nov 7, 2024
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3 changes: 3 additions & 0 deletions data/file_features/under_consideration/event_message/emsg_cmaf_standalone.cmfm
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14 changes: 14 additions & 0 deletions data/file_features/under_consideration/event_message/emsg_cmaf_standalone.json
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I used MP4Box to review the file (MP4Box -dxml emsg_cmaf_standalone.cmfm). MP4Box shows the content of the track in the XML output.
This is a 10 min file, fragmented with 2s fragments.
It alternates periods of 30s with SCTE splice insert events (with incrementing event id) that gets repeated (with presentation time delta adjustment) for 15 segments. This uses the emib box.
It is followed by 150s and 1ms of emeb boxes. The 1ms duration make the segments shift over time. I don't know if that is expected.

Original file line number Diff line number Diff line change
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{
"contributor": "Unified Streaming",
"description": "Stand-alone CMAF event message track",
"mdms_number": "m67097",
"rel_filepath": "./emsg_cmaf_standalone.cmfm",
"associated_files": ["./emsg_progressive.mp4"],
"version": 1,
"md5": "edb9b44d0613b0311f04a65cced11ff5",
"published": false,
"features": [],
"conforms_to": [],
"notes": "The signaled metadata has a duration of 600 seconds, with 2-second segments and slots of 30-seconds every 180-seconds. The Event message track uses the splice insert command from SCTE-35.",
"license": "Copyright (c) 2024 Unified Streaming\nAll rights reserved.\n\nThe Conformance File is licensed under the\nCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.\nTo view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/."
}
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