{"action":"created","issue":{"url":"https://api.github.com/repos/donmelton/video-transcoding-scripts/issues/15","labels_url":"https://api.github.com/repos/donmelton/video-transcoding-scripts/issues/15/labels{/name}","comments_url":"https://api.github.com/repos/donmelton/video-transcoding-scripts/issues/15/comments","events_url":"https://api.github.com/repos/donmelton/video-transcoding-scripts/issues/15/events","html_url":"https://github.com/donmelton/video-transcoding-scripts/issues/15","id":55921069,"number":15,"title":"--480 Preset?","user":{"login":"scottwf","id":58068,"avatar_url":"https://avatars.githubusercontent.com/u/58068?v=3","gravatar_id":"","url":"https://api.github.com/users/scottwf","html_url":"https://github.com/scottwf","followers_url":"https://api.github.com/users/scottwf/followers","following_url":"https://api.github.com/users/scottwf/following{/other_user}","gists_url":"https://api.github.com/users/scottwf/gists{/gist_id}","starred_url":"https://api.github.com/users/scottwf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/scottwf/subscriptions","organizations_url":"https://api.github.com/users/scottwf/orgs","repos_url":"https://api.github.com/users/scottwf/repos","events_url":"https://api.github.com/users/scottwf/events{/privacy}","received_events_url":"https://api.github.com/users/scottwf/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":7,"created_at":"2015-01-29T16:23:58Z","updated_at":"2015-02-01T09:34:47Z","closed_at":null,"body":"I just found your script and it looks like just what I need right now, but I also have some kids show that I've ripped at 720 and really only need 480 to save space. Is it a lot of work to add an additional resize preset?"},"comment":{"url":"https://api.github.com/repos/donmelton/video-transcoding-scripts/issues/comments/72357987","html_url":"https://github.com/donmelton/video-transcoding-scripts/issues/15#issuecomment-72357987","issue_url":"https://api.github.com/repos/donmelton/video-transcoding-scripts/issues/15","id":72357987,"user":{"login":"finnhughes","id":6408429,"avatar_url":"https://avatars.githubusercontent.com/u/6408429?v=3","gravatar_id":"","url":"https://api.github.com/users/finnhughes","html_url":"https://github.com/finnhughes","followers_url":"https://api.github.com/users/finnhughes/followers","following_url":"https://api.github.com/users/finnhughes/following{/other_user}","gists_url":"https://api.github.com/users/finnhughes/gists{/gist_id}","starred_url":"https://api.github.com/users/finnhughes/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/finnhughes/subscriptions","organizations_url":"https://api.github.com/users/finnhughes/orgs","repos_url":"https://api.github.com/users/finnhughes/repos","events_url":"https://api.github.com/users/finnhughes/events{/privacy}","received_events_url":"https://api.github.com/users/finnhughes/received_events","type":"User","site_admin":false},"created_at":"2015-02-01T09:34:47Z","updated_at":"2015-02-01T09:34:47Z","body":"Isn't the target bitrate 2Mbps v.s. 4Mbps? Having said that it does make sense to me that  x264 is going to hit your quality constraints with 4Mbps 720p where it struggles with 2Mbps 480p. Since increasing the number of pixels tends to make them more similar H.264 can do a better job at compressing the pixels, that's a bit dependent on content. With a scene like grass panning at the right (wrong) distance HD can have enough detail to show the individual blades where SD just shows a sea of green and then HD will be much more expensive to encode than SD. The example content given by Scott is animated which I'd guess is a good example of content where increasing the resolution is very cheap...\r\n\r\nA side note is that you get the same behaviour when changing the framerate. Also (IIRC) when x264 introduced 10bit encoding they found it more efficient than 8bit even on 8bit content, simply because the internal representations had more information to work with."}}