{"action":"created","issue":{"url":"https://api.github.com/repos/gpac/gpac/issues/13","labels_url":"https://api.github.com/repos/gpac/gpac/issues/13/labels{/name}","comments_url":"https://api.github.com/repos/gpac/gpac/issues/13/comments","events_url":"https://api.github.com/repos/gpac/gpac/issues/13/events","html_url":"https://github.com/gpac/gpac/issues/13","id":51135541,"number":13,"title":"when concatenating incompatible H264 files, mp4box creates mixed avc1/avc3 mp4 files","user":{"login":"rbouqueau","id":1917976,"avatar_url":"https://avatars.githubusercontent.com/u/1917976?v=3","gravatar_id":"","url":"https://api.github.com/users/rbouqueau","html_url":"https://github.com/rbouqueau","followers_url":"https://api.github.com/users/rbouqueau/followers","following_url":"https://api.github.com/users/rbouqueau/following{/other_user}","gists_url":"https://api.github.com/users/rbouqueau/gists{/gist_id}","starred_url":"https://api.github.com/users/rbouqueau/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rbouqueau/subscriptions","organizations_url":"https://api.github.com/users/rbouqueau/orgs","repos_url":"https://api.github.com/users/rbouqueau/repos","events_url":"https://api.github.com/users/rbouqueau/events{/privacy}","received_events_url":"https://api.github.com/users/rbouqueau/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/gpac/gpac/labels/feature-request","name":"feature-request","color":"84b6eb"},{"url":"https://api.github.com/repos/gpac/gpac/labels/mp4box","name":"mp4box","color":"207de5"}],"state":"open","locked":false,"assignee":{"login":"rbouqueau","id":1917976,"avatar_url":"https://avatars.githubusercontent.com/u/1917976?v=3","gravatar_id":"","url":"https://api.github.com/users/rbouqueau","html_url":"https://github.com/rbouqueau","followers_url":"https://api.github.com/users/rbouqueau/followers","following_url":"https://api.github.com/users/rbouqueau/following{/other_user}","gists_url":"https://api.github.com/users/rbouqueau/gists{/gist_id}","starred_url":"https://api.github.com/users/rbouqueau/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rbouqueau/subscriptions","organizations_url":"https://api.github.com/users/rbouqueau/orgs","repos_url":"https://api.github.com/users/rbouqueau/repos","events_url":"https://api.github.com/users/rbouqueau/events{/privacy}","received_events_url":"https://api.github.com/users/rbouqueau/received_events","type":"User","site_admin":false},"milestone":null,"comments":1,"created_at":"2014-12-05T19:20:34Z","updated_at":"2015-05-01T15:27:43Z","closed_at":null,"body":"I can't share files here, please contact me to be able to reproduce. The only difference is the presence of the ```aspect_ratio_info_present_flag``` flag in the SPS.\r\n\r\nThe streams are generated with FFmpeg and I couldn't figure out with the SPS were different yet.\r\n\r\nGPAC could either have:\r\n- a better comparison algorithm for AVCConfig (especially for descriptors) ;\r\n- change the behaviour and use multiple \"sample descriptions\" with 'avc1' or switch completely to 'avc3' - check if compatible with existing players.\r\n\r\nOpinions? CC @gpac/owners "},"comment":{"url":"https://api.github.com/repos/gpac/gpac/issues/comments/98156813","html_url":"https://github.com/gpac/gpac/issues/13#issuecomment-98156813","issue_url":"https://api.github.com/repos/gpac/gpac/issues/13","id":98156813,"user":{"login":"JeffroDH","id":8851954,"avatar_url":"https://avatars.githubusercontent.com/u/8851954?v=3","gravatar_id":"","url":"https://api.github.com/users/JeffroDH","html_url":"https://github.com/JeffroDH","followers_url":"https://api.github.com/users/JeffroDH/followers","following_url":"https://api.github.com/users/JeffroDH/following{/other_user}","gists_url":"https://api.github.com/users/JeffroDH/gists{/gist_id}","starred_url":"https://api.github.com/users/JeffroDH/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JeffroDH/subscriptions","organizations_url":"https://api.github.com/users/JeffroDH/orgs","repos_url":"https://api.github.com/users/JeffroDH/repos","events_url":"https://api.github.com/users/JeffroDH/events{/privacy}","received_events_url":"https://api.github.com/users/JeffroDH/received_events","type":"User","site_admin":false},"created_at":"2015-05-01T15:27:43Z","updated_at":"2015-05-01T15:27:43Z","body":"I have seen this behavior with streams encoded with Handbrake.  2 files joined flawlessly, remained in H.264, and the next 2, encoded with the exact same settings encoded to AVC3 and won't import into iTunes.  I built the latest version of GPAC this week.\r\n"}}