{"id":2240,"date":"2008-02-17T10:02:08","date_gmt":"2008-02-17T08:02:08","guid":{"rendered":"http:\/\/mummila.net\/vuorovaikutus\/2008\/02\/17\/kuinka-mpeg-tiedoston-sisaltamat-signaalityypit-selvitetaan\/"},"modified":"2010-09-23T17:38:49","modified_gmt":"2010-09-23T14:38:49","slug":"kuinka-mpeg-tiedoston-sisaltamat-signaalityypit-selvitetaan","status":"publish","type":"post","link":"https:\/\/mummila.net\/nuudelisoppa\/2008\/02\/17\/kuinka-mpeg-tiedoston-sisaltamat-signaalityypit-selvitetaan\/","title":{"rendered":"[Ratkaisu] Kuinka MPEG-tiedoston sis\u00e4lt\u00e4m\u00e4t signaalityypit selvitet\u00e4\u00e4n?"},"content":{"rendered":"<dl>\n<dt>L\u00e4ht\u00f6kohta<\/dt>\n<dd>Minulla on <code>.mpg<\/code> -p\u00e4\u00e4tteinen videotiedosto, <code>testi.mpg<\/code>. Pakettienhallinnassa <code>ffmpeg<\/code> on asennettuna. Haluan tiet\u00e4\u00e4 mit\u00e4 muotoa videotiedoston sis\u00e4lt\u00e4m\u00e4 kuva- ja \u00e4\u00e4nivirta ovat.<\/dd>\n<dt>Ongelma<\/dt>\n<dd>En tied\u00e4 miten videotiedostoni sis\u00e4lt\u00e4m\u00e4n kuva- ja \u00e4\u00e4nisignaalin muodon voisi selvitt\u00e4\u00e4.<\/dd>\n<dt>Ratkaisu<\/dt>\n<dd>Saan <a href=\"http:\/\/forum.doom9.org\/showthread.php?t=113071\">videotiedoston sis\u00e4ll\u00f6st\u00e4 tietoja<\/a> seuraavalla komennolla:<\/p>\n<blockquote>\n<pre><code>ffmpeg -i testi.mpg<\/code><\/pre>\n<\/blockquote>\n<p>   Komennon antama tuloste kertoo muun muassa my\u00f6s videotiedostoni kuvan ja \u00e4\u00e4nen pakkausmuodon:<\/p>\n<blockquote>\n<pre><code>  Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576, 8400 kb\/s, 25.00 fps(r)\n  Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 160 kb\/s<\/code><\/pre>\n<\/blockquote>\n<p>   Videotiedostoni sis\u00e4lt\u00e4\u00e4 siis <a href=\"http:\/\/en.wikipedia.org\/wiki\/M2V\">MPEG-2 PES<\/a> -muotoisen kuvasignaalin ja <a href=\"http:\/\/en.wikipedia.org\/wiki\/MPEG-1_Audio_Layer_II\">MPEG-1 Audio Layer II<\/a> -muotoisen \u00e4\u00e4nisignaalin.<\/dd>\n<\/dl>\n<p><span hidden class=\"__iawmlf-post-loop-links\" data-iawmlf-links=\"[{&quot;id&quot;:594,&quot;href&quot;:&quot;http:\\\/\\\/forum.doom9.org\\\/showthread.php?t=113071&quot;,&quot;archived_href&quot;:&quot;https:\\\/\\\/web-wp.archive.org\\\/web\\\/20251223144109\\\/https:\\\/\\\/forum.doom9.org\\\/showthread.php?t=113071&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2026-10-05 20:33:54&quot;,&quot;http_code&quot;:200},{&quot;date&quot;:&quot;2026-10-11 06:58:00&quot;,&quot;http_code&quot;:200}],&quot;broken&quot;:false,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2026-10-11 06:58:00&quot;,&quot;http_code&quot;:200},&quot;process&quot;:&quot;done&quot;},{&quot;id&quot;:595,&quot;href&quot;:&quot;http:\\\/\\\/en.wikipedia.org\\\/wiki\\\/M2V&quot;,&quot;archived_href&quot;:&quot;https:\\\/\\\/web-wp.archive.org\\\/web\\\/20100715185523\\\/http:\\\/\\\/en.wikipedia.org:80\\\/wiki\\\/M2V&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2026-10-05 20:34:02&quot;,&quot;http_code&quot;:404},{&quot;date&quot;:&quot;2026-10-11 06:57:59&quot;,&quot;http_code&quot;:404}],&quot;broken&quot;:false,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2026-10-11 06:57:59&quot;,&quot;http_code&quot;:404},&quot;process&quot;:&quot;done&quot;},{&quot;id&quot;:596,&quot;href&quot;:&quot;http:\\\/\\\/en.wikipedia.org\\\/wiki\\\/MPEG-1_Audio_Layer_II&quot;,&quot;archived_href&quot;:&quot;&quot;,&quot;redirect_href&quot;:&quot;https:\\\/\\\/en.wikipedia.org\\\/wiki\\\/MPEG-1_Audio_Layer_II&quot;,&quot;checks&quot;:[],&quot;broken&quot;:false,&quot;last_checked&quot;:null,&quot;process&quot;:&quot;done&quot;}]\"><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>En tied\u00e4 miten videotiedostoni sis\u00e4lt\u00e4m\u00e4n kuva- ja \u00e4\u00e4nisignaalin muodon voisi selvitt\u00e4\u00e4. Signaalien muoto selvi\u00e4\u00e4 ffmpeg -i -komennon tulosteesta.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3386,3561],"class_list":["post-2240","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-ffmpeg","tag-mpeg"],"_links":{"self":[{"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/posts\/2240","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/comments?post=2240"}],"version-history":[{"count":1,"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/posts\/2240\/revisions"}],"predecessor-version":[{"id":2632,"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/posts\/2240\/revisions\/2632"}],"wp:attachment":[{"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/media?parent=2240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/categories?post=2240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mummila.net\/nuudelisoppa\/wp-json\/wp\/v2\/tags?post=2240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}