{"action":"created","issue":{"url":"https://api.github.com/repos/mdhiggins/sickbeard_mp4_automator/issues/360","labels_url":"https://api.github.com/repos/mdhiggins/sickbeard_mp4_automator/issues/360/labels{/name}","comments_url":"https://api.github.com/repos/mdhiggins/sickbeard_mp4_automator/issues/360/comments","events_url":"https://api.github.com/repos/mdhiggins/sickbeard_mp4_automator/issues/360/events","html_url":"https://github.com/mdhiggins/sickbeard_mp4_automator/issues/360","id":115127351,"number":360,"title":"iOS: Both audio tracks playing at once.  ","user":{"login":"totallyGreg","id":283704,"avatar_url":"https://avatars.githubusercontent.com/u/283704?v=3","gravatar_id":"","url":"https://api.github.com/users/totallyGreg","html_url":"https://github.com/totallyGreg","followers_url":"https://api.github.com/users/totallyGreg/followers","following_url":"https://api.github.com/users/totallyGreg/following{/other_user}","gists_url":"https://api.github.com/users/totallyGreg/gists{/gist_id}","starred_url":"https://api.github.com/users/totallyGreg/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/totallyGreg/subscriptions","organizations_url":"https://api.github.com/users/totallyGreg/orgs","repos_url":"https://api.github.com/users/totallyGreg/repos","events_url":"https://api.github.com/users/totallyGreg/events{/privacy}","received_events_url":"https://api.github.com/users/totallyGreg/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-11-04T19:19:50Z","updated_at":"2015-11-04T21:01:01Z","closed_at":"2015-11-04T21:01:01Z","body":"I suspect this is an issue with ffmpeg...\r\nbut with both 'iso-audio' and 'iso-first-track-only' set to true, when the script takes an mkv with an ac3 (5.1) stream and creates a stereo mix down AAC track inside a new .m4v container, both audio tracks are 'enabled'.  This results in creepy metallic echo on native OS X playback (iTunes, quicklook, Quicktime) as both sources are played at once. \r\nPrior to me discovering your excellent script I used Subler to remux and each audio and video track is presented with a checkbox.  When viewing files created by the sickbeard_mp4_automator in Subler I can see that both audio tracks are checked.  Unchecking the surround track and leaving the aac selected and saving the file fixes this issue.  I looked around in ffmpeg but there doesn't appear to be a way to view or set this 'enabled' bit.  \r\nI usually play everything through Plex which does not exhibit this behavior so it's not a big deal but I was wondering if there is a way to adjust this.  Ideally whatever track is marked 'iso-first-track-only' would be enabled by default and the rest would not be.  "},"comment":{"url":"https://api.github.com/repos/mdhiggins/sickbeard_mp4_automator/issues/comments/153863953","html_url":"https://github.com/mdhiggins/sickbeard_mp4_automator/issues/360#issuecomment-153863953","issue_url":"https://api.github.com/repos/mdhiggins/sickbeard_mp4_automator/issues/360","id":153863953,"user":{"login":"mdhiggins","id":3608298,"avatar_url":"https://avatars.githubusercontent.com/u/3608298?v=3","gravatar_id":"","url":"https://api.github.com/users/mdhiggins","html_url":"https://github.com/mdhiggins","followers_url":"https://api.github.com/users/mdhiggins/followers","following_url":"https://api.github.com/users/mdhiggins/following{/other_user}","gists_url":"https://api.github.com/users/mdhiggins/gists{/gist_id}","starred_url":"https://api.github.com/users/mdhiggins/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mdhiggins/subscriptions","organizations_url":"https://api.github.com/users/mdhiggins/orgs","repos_url":"https://api.github.com/users/mdhiggins/repos","events_url":"https://api.github.com/users/mdhiggins/events{/privacy}","received_events_url":"https://api.github.com/users/mdhiggins/received_events","type":"User","site_admin":false},"created_at":"2015-11-04T21:01:01Z","updated_at":"2015-11-04T21:01:01Z","body":"Gonna close this since its primarily an FFMPEG issue"}}