{"action":"closed","issue":{"url":"https://api.github.com/repos/Revan654/movie-thumbnailer-mtn/issues/1","repository_url":"https://api.github.com/repos/Revan654/movie-thumbnailer-mtn","labels_url":"https://api.github.com/repos/Revan654/movie-thumbnailer-mtn/issues/1/labels{/name}","comments_url":"https://api.github.com/repos/Revan654/movie-thumbnailer-mtn/issues/1/comments","events_url":"https://api.github.com/repos/Revan654/movie-thumbnailer-mtn/issues/1/events","html_url":"https://github.com/Revan654/movie-thumbnailer-mtn/issues/1","id":377201961,"node_id":"MDU6SXNzdWUzNzcyMDE5NjE=","number":1,"title":"Blurry thumbnails, wrong timestamps","user":{"login":"abolibibelot1980","id":44624604,"node_id":"MDQ6VXNlcjQ0NjI0NjA0","avatar_url":"https://avatars0.githubusercontent.com/u/44624604?v=4","gravatar_id":"","url":"https://api.github.com/users/abolibibelot1980","html_url":"https://github.com/abolibibelot1980","followers_url":"https://api.github.com/users/abolibibelot1980/followers","following_url":"https://api.github.com/users/abolibibelot1980/following{/other_user}","gists_url":"https://api.github.com/users/abolibibelot1980/gists{/gist_id}","starred_url":"https://api.github.com/users/abolibibelot1980/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/abolibibelot1980/subscriptions","organizations_url":"https://api.github.com/users/abolibibelot1980/orgs","repos_url":"https://api.github.com/users/abolibibelot1980/repos","events_url":"https://api.github.com/users/abolibibelot1980/events{/privacy}","received_events_url":"https://api.github.com/users/abolibibelot1980/received_events","type":"User","site_admin":false},"labels":[{"id":1124198120,"node_id":"MDU6TGFiZWwxMTI0MTk4MTIw","url":"https://api.github.com/repos/Revan654/movie-thumbnailer-mtn/labels/Closed%20Due%20to%20Inactivity","name":"Closed Due to Inactivity","color":"1a46bf","default":false}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2018-11-04T22:25:51Z","updated_at":"2018-11-12T04:13:55Z","closed_at":"2018-11-12T04:13:55Z","author_association":"NONE","body":"I compared MTN with [VCSI](https://github.com/amietn/vcsi) quite extensively, and found out the following :\r\n– MTN is significantly faster to generate the preview pictures (5-10x faster).\r\n– At the same frame size and quality setting, MTN's output is significantly blurrier, there is a discernible loss of detail / sharpness compared with VCSI's output.\r\n– MTN doesn't seem to respect the -s parameter, for instance, when generating a preview for a 45m24s MP4 video, with -s 60 or -s 120, the output is the same, and the steps between shots are roughly even, i.e. about 9 minutes. I tried to get VCSI with its -m switch (manual times) to match the shots generated by MTN, I couldn't get an exact match with a 1s accuracy, but the samples below still show that the timestamps are way off with MTN (and also shows the lack of detail compared with VCSI's output).\r\n– The output quality is the same as [the “kwent” version of MTN](https://github.com/kwent/mtn) on Github with the same settings (even though that one is apparently older and relies on older libavcodec libraries), or the one included in StaxRip (which identifies as version 4.0 when launched from the command line) ; the only difference I found is that by default this one (Revan654) selects -j 95 instead of -j 90 for the JPEG compression quality (but this doesn't produce any visible improvement, even PNG thumbnail previews are blurry). Also, the “kwent” version doesn't respect the -s parameter either, but it does display the correct timestamps. The “Revan654” version provides some extra details in the metadata area.\r\n\r\n![2018_10_2118_32 - arte - ludwig van beethoven ultimes sonates par alexandre tharaud mtn revan654 -j 90 -s 60](https://user-images.githubusercontent.com/44624604/47970291-b366da80-e083-11e8-99e2-d12e0218fe1c.jpg)\r\n=> MTN (Revan654 or StaxRip\\Apps\\MTN) with -j 90 -s 60\r\n\r\n![2018_10_2118_32 - arte - ludwig van beethoven ultimes sonates par alexandre tharaud mtn 200808a -j 90 -s 60](https://user-images.githubusercontent.com/44624604/47970496-7d772580-e086-11e8-8096-f85bfd64bf93.jpg)\r\n=> MTN (kwent) with -j 90 -s 60\r\n\r\n![2018_10_2118_32 - arte - ludwig van beethoven ultimes sonates par alexandre tharaud mp4 vcsi -m 9 05 18 09 27 43 36 17](https://user-images.githubusercontent.com/44624604/47970523-f2e2f600-e086-11e8-9c80-026682dabc52.jpg)\r\n=> VCSI with --quality 90 -m 00:09:05,00:18:09,00:27:43,00:36:17\r\n\r\n"}}
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