{"action":"created","issue":{"url":"https://api.github.com/repos/Dash-Industry-Forum/Test-Vectors/issues/64","repository_url":"https://api.github.com/repos/Dash-Industry-Forum/Test-Vectors","labels_url":"https://api.github.com/repos/Dash-Industry-Forum/Test-Vectors/issues/64/labels{/name}","comments_url":"https://api.github.com/repos/Dash-Industry-Forum/Test-Vectors/issues/64/comments","events_url":"https://api.github.com/repos/Dash-Industry-Forum/Test-Vectors/issues/64/events","html_url":"https://github.com/Dash-Industry-Forum/Test-Vectors/issues/64","id":235383361,"number":64,"title":"Timing Issues in several Multiple Periods Test Vectors (e.g. Test Vector 18)","user":{"login":"sruditsky","id":8403167,"avatar_url":"https://avatars2.githubusercontent.com/u/8403167?v=4","gravatar_id":"","url":"https://api.github.com/users/sruditsky","html_url":"https://github.com/sruditsky","followers_url":"https://api.github.com/users/sruditsky/followers","following_url":"https://api.github.com/users/sruditsky/following{/other_user}","gists_url":"https://api.github.com/users/sruditsky/gists{/gist_id}","starred_url":"https://api.github.com/users/sruditsky/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sruditsky/subscriptions","organizations_url":"https://api.github.com/users/sruditsky/orgs","repos_url":"https://api.github.com/users/sruditsky/repos","events_url":"https://api.github.com/users/sruditsky/events{/privacy}","received_events_url":"https://api.github.com/users/sruditsky/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":{"login":"niteeshbhat","id":13762418,"avatar_url":"https://avatars3.githubusercontent.com/u/13762418?v=4","gravatar_id":"","url":"https://api.github.com/users/niteeshbhat","html_url":"https://github.com/niteeshbhat","followers_url":"https://api.github.com/users/niteeshbhat/followers","following_url":"https://api.github.com/users/niteeshbhat/following{/other_user}","gists_url":"https://api.github.com/users/niteeshbhat/gists{/gist_id}","starred_url":"https://api.github.com/users/niteeshbhat/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/niteeshbhat/subscriptions","organizations_url":"https://api.github.com/users/niteeshbhat/orgs","repos_url":"https://api.github.com/users/niteeshbhat/repos","events_url":"https://api.github.com/users/niteeshbhat/events{/privacy}","received_events_url":"https://api.github.com/users/niteeshbhat/received_events","type":"User","site_admin":false},"assignees":[{"login":"niteeshbhat","id":13762418,"avatar_url":"https://avatars3.githubusercontent.com/u/13762418?v=4","gravatar_id":"","url":"https://api.github.com/users/niteeshbhat","html_url":"https://github.com/niteeshbhat","followers_url":"https://api.github.com/users/niteeshbhat/followers","following_url":"https://api.github.com/users/niteeshbhat/following{/other_user}","gists_url":"https://api.github.com/users/niteeshbhat/gists{/gist_id}","starred_url":"https://api.github.com/users/niteeshbhat/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/niteeshbhat/subscriptions","organizations_url":"https://api.github.com/users/niteeshbhat/orgs","repos_url":"https://api.github.com/users/niteeshbhat/repos","events_url":"https://api.github.com/users/niteeshbhat/events{/privacy}","received_events_url":"https://api.github.com/users/niteeshbhat/received_events","type":"User","site_admin":false}],"milestone":null,"comments":0,"created_at":"2017-06-12T22:23:56Z","updated_at":"2018-03-23T08:49:03Z","closed_at":null,"author_association":"NONE","body":"There are several test vectors which combine a period of 250 sec of BBB, then 2 periods of ED of 60 and 50 sec and then another period of BBB of 344 sec. The periods are set in the way that the 4th period is an immediate continuation of the 1st.\r\n\r\nI believe there are some timing issues in these test vectors:\r\n\r\n1) The period with id=\"3\" video has @presentationTimeOffset=\"3073024\" which is precisely 250 sec from the beginning of BBB -- (3073024 - 1024)/12288 = 250.\r\nHowever,  the audio has @presentationTimeOffset=\"11964416\", which is 11964416/48000 = 249.26 sec from the beginning of BBB.\r\n\r\nThe result is lip-sync problems in this period.\r\n\r\nIn addition @startNumber for the audio representation of this period should be 128, (not 126).\r\n\r\n2) In the period with id=\"2\" video representations have @presentationTimeOffset=\"1024\", but it should be  12288 * 60 + 1024 = 738304\r\nLikewise the audio representation should have @presentationTimeOffset=\"2880000\" (48000*60)\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/Dash-Industry-Forum/Test-Vectors/issues/comments/375583042","html_url":"https://github.com/Dash-Industry-Forum/Test-Vectors/issues/64#issuecomment-375583042","issue_url":"https://api.github.com/repos/Dash-Industry-Forum/Test-Vectors/issues/64","id":375583042,"user":{"login":"waqarz","id":3089913,"avatar_url":"https://avatars3.githubusercontent.com/u/3089913?v=4","gravatar_id":"","url":"https://api.github.com/users/waqarz","html_url":"https://github.com/waqarz","followers_url":"https://api.github.com/users/waqarz/followers","following_url":"https://api.github.com/users/waqarz/following{/other_user}","gists_url":"https://api.github.com/users/waqarz/gists{/gist_id}","starred_url":"https://api.github.com/users/waqarz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/waqarz/subscriptions","organizations_url":"https://api.github.com/users/waqarz/orgs","repos_url":"https://api.github.com/users/waqarz/repos","events_url":"https://api.github.com/users/waqarz/events{/privacy}","received_events_url":"https://api.github.com/users/waqarz/received_events","type":"User","site_admin":false},"created_at":"2018-03-23T08:49:03Z","updated_at":"2018-03-23T08:49:03Z","author_association":"CONTRIBUTOR","body":"@niteeshbhat  Please check this"}}
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