{"action":"created","issue":{"url":"https://api.github.com/repos/Ymagis/ClairMeta/issues/34","repository_url":"https://api.github.com/repos/Ymagis/ClairMeta","labels_url":"https://api.github.com/repos/Ymagis/ClairMeta/issues/34/labels{/name}","comments_url":"https://api.github.com/repos/Ymagis/ClairMeta/issues/34/comments","events_url":"https://api.github.com/repos/Ymagis/ClairMeta/issues/34/events","html_url":"https://github.com/Ymagis/ClairMeta/issues/34","id":347269798,"node_id":"MDU6SXNzdWUzNDcyNjk3OTg=","number":34,"title":"check_cpl_reel_duration_picture_subtitles should be enforced only for Interop","user":{"login":"matmat","id":859123,"node_id":"MDQ6VXNlcjg1OTEyMw==","avatar_url":"https://avatars0.githubusercontent.com/u/859123?v=4","gravatar_id":"","url":"https://api.github.com/users/matmat","html_url":"https://github.com/matmat","followers_url":"https://api.github.com/users/matmat/followers","following_url":"https://api.github.com/users/matmat/following{/other_user}","gists_url":"https://api.github.com/users/matmat/gists{/gist_id}","starred_url":"https://api.github.com/users/matmat/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/matmat/subscriptions","organizations_url":"https://api.github.com/users/matmat/orgs","repos_url":"https://api.github.com/users/matmat/repos","events_url":"https://api.github.com/users/matmat/events{/privacy}","received_events_url":"https://api.github.com/users/matmat/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-08-03T06:02:15Z","updated_at":"2018-08-03T08:00:14Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"For Interop:\r\nMainSubtitle Duration **must** be equal to MainPicture Duration.\r\n\r\nFor SMPTE:\r\nMainSubtitle duration is allowed to be **less than or equal** to MainPicture Duration. See references below\r\n\r\n- ST 429-2:2013 section 9.4:\r\n_The Duration element shall be present within every Asset element that refers to an external track file. The value of all Duration elements in a reel, **_with the exception of timed text elements_**, shall be equal. The Duration of the Reel shall be determined by the MainPicture element, per the provisions of [SMPTE ST 429-7], or the MainStereoscopicPicture element, whichever is present._\r\n\r\n- ST 429-2:2013 section 9.6:\r\n_Each Reel element in a Composition Playlist document shall contain one (1) MainPicture element [SMPTE ST 429-7] or one (1) MainStereoscopicPicture element [SMPTE ST 429-10]. This element shall refer to a Picture Track File as defined by [SMPTE ST 429-3]. If the element name is MainStereoscopicPicture, the referenced Track File shall also conform to [SMPTE ST 429-10]._\r\n\r\n- ST 429-7:2006 section 5:\r\n_At the start of a given Reel, playback of all Assets contained within the Reel shall start simultaneously at the Entry Point given for each respective Track File. **The duration of a Reel shall be equal to the duration of the Reel’s MainPicture Asset**, or the Asset with the shortest duration if the MainPicture Asset is not present._\r\n(Figure 3 clearly shows a MainSubtitle Asset with shorter Duration than the two other assets)\r\n\r\n- mpeg_ii_pack_constraints_2v5.doc section 7.5:\r\n_All subtitle tracks referenced by a given Composition Playlist must share identical language.The subtitle file shall not contain any subtitles outside the playable portion determined by the EntryPoint and Duration of the subtitle asset._\r\n\r\n- mpeg_ii_pack_constraints_2v5.doc section 7.8:\r\n_**All Assets** referenced by a single Reel shall have the same Duration_"},"comment":{"url":"https://api.github.com/repos/Ymagis/ClairMeta/issues/comments/410177062","html_url":"https://github.com/Ymagis/ClairMeta/issues/34#issuecomment-410177062","issue_url":"https://api.github.com/repos/Ymagis/ClairMeta/issues/34","id":410177062,"node_id":"MDEyOklzc3VlQ29tbWVudDQxMDE3NzA2Mg==","user":{"login":"remia","id":1922806,"node_id":"MDQ6VXNlcjE5MjI4MDY=","avatar_url":"https://avatars1.githubusercontent.com/u/1922806?v=4","gravatar_id":"","url":"https://api.github.com/users/remia","html_url":"https://github.com/remia","followers_url":"https://api.github.com/users/remia/followers","following_url":"https://api.github.com/users/remia/following{/other_user}","gists_url":"https://api.github.com/users/remia/gists{/gist_id}","starred_url":"https://api.github.com/users/remia/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/remia/subscriptions","organizations_url":"https://api.github.com/users/remia/orgs","repos_url":"https://api.github.com/users/remia/repos","events_url":"https://api.github.com/users/remia/events{/privacy}","received_events_url":"https://api.github.com/users/remia/received_events","type":"User","site_admin":false},"created_at":"2018-08-03T08:00:14Z","updated_at":"2018-08-03T08:00:14Z","author_association":"CONTRIBUTOR","body":"Very good overview thanks !\r\n\r\nI'll update the check when I get the time (most likely not in the next 2 weeks), feels free to open a pull request if you are in a hurry. This check was tagged as a warning but could be an error with the update."}}
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