{"id":576,"date":"2008-07-25T22:40:59","date_gmt":"2008-07-26T06:40:59","guid":{"rendered":"http:\/\/multimedia.cx\/eggs\/video-encoding-tests\/"},"modified":"2008-07-29T08:56:07","modified_gmt":"2008-07-29T16:56:07","slug":"video-encoding-tests","status":"publish","type":"post","link":"https:\/\/multimedia.cx\/eggs\/video-encoding-tests\/","title":{"rendered":"Video Encoding Tests"},"content":{"rendered":"<p>In case you don&#8217;t carefully track <a href=\"http:\/\/ffmpeg.org\/\">FFmpeg<\/a> development, much recognition goes out to <a href=\"http:\/\/guru.multimedia.cx\/\">Michael<\/a> for a lot of work on the H.264 decoder. Thanks to his efforts over the past week or so, I have been able to add about 2 dozen more H.264 conformance tests. Presently, FFmpeg can decode 92\/136 of the suite&#8217;s vectors across <a href=\"http:\/\/fate.multimedia.cx\/\">all supported configurations<\/a>.<\/p>\n<p>Also, <em>finally<\/em>, I have started to add encoding tests to FATE. The first test is designated <a href=\"http:\/\/fate.multimedia.cx\/index.php?test_spec=157\">idroq-video-encode<\/a>. I was stuck on this for awhile while I tried to understand what sort of test material I should use. I eventually realized that there are perfectly adequate (and stunningly complicated) images already generated by FFmpeg&#8217;s videogen.c program that is built and run by &#8216;make test&#8217;. If you are not familiar, they look like this:<\/p>\n<p><center><br \/>\n<img decoding=\"async\" src=\"\/eggs\/images\/ffmpeg-vsynth1-01.jpg\" alt=\"FFmpeg vsynth1 image\" \/><br \/>\n<\/center><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In case you don&#8217;t carefully track FFmpeg development, much recognition goes out to Michael for a lot of work on the H.264 decoder. Thanks to his efforts over the past week or so, I have been able to add about 2 dozen more H.264 conformance tests. Presently, FFmpeg can decode 92\/136 of the suite&#8217;s vectors [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101,3],"tags":[],"class_list":["post-576","post","type-post","status-publish","format-standard","hentry","category-fate-server","category-open-source-multimedia"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/posts\/576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/comments?post=576"}],"version-history":[{"count":0,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/posts\/576\/revisions"}],"wp:attachment":[{"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/media?parent=576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/categories?post=576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/tags?post=576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}