{"id":2456,"date":"2010-05-08T18:39:05","date_gmt":"2010-05-09T01:39:05","guid":{"rendered":"http:\/\/multimedia.cx\/eggs\/?p=2456"},"modified":"2010-05-08T18:39:05","modified_gmt":"2010-05-09T01:39:05","slug":"erroneous-vp6-encoding","status":"publish","type":"post","link":"https:\/\/multimedia.cx\/eggs\/erroneous-vp6-encoding\/","title":{"rendered":"Erroneous VP6 Encoding"},"content":{"rendered":"<p>You have to know that I get a little nervous when I encounter something like this in my general web surfing&#8211; a video on the Amazon product page for <a href=\"http:\/\/www.amazon.com\/gp\/product\/B002I0J45C\/\">3D Dot Heroes<\/a>:<\/p>\n<p><center><br \/>\n<a href=\"http:\/\/www.amazon.com\/gp\/product\/B002I0J45C\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/multimedia.cx\/eggs\/wp-content\/uploads\/2010\/05\/3d-dot-heroes.jpg\" alt=\"\" title=\"3D Dot Heroes video screenshot\" width=\"329\" height=\"295\" class=\"aligncenter size-full wp-image-2457\" srcset=\"https:\/\/multimedia.cx\/eggs\/wp-content\/uploads\/2010\/05\/3d-dot-heroes.jpg 329w, https:\/\/multimedia.cx\/eggs\/wp-content\/uploads\/2010\/05\/3d-dot-heroes-300x268.jpg 300w\" sizes=\"auto, (max-width: 329px) 100vw, 329px\" \/><\/a><br \/>\n<\/center><\/p>\n<p>Did I just encounter a particularly glaring Flash Player bug in the wild? Fortunately (w.r.t. my work load <a href=\"http:\/\/blogs.adobe.com\/penguin.swf\/\">at my day job<\/a>), I determined that there might be something wrong with the actual video encoding since I downloaded the corresponding .flv file and ran it through an independent VP6 decoder (provided by FFmpeg through VLC).<\/p>\n<p>So what might be wrong with this video, class? I think this logo shot provides an exquisite insight into the problem:<\/p>\n<p><center><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/multimedia.cx\/eggs\/wp-content\/uploads\/2010\/05\/3d-dot-heroes-color-planes.jpg\" alt=\"\" title=\"3D Dot Heroes video, skewed color planes\" width=\"400\" height=\"267\" class=\"aligncenter size-full wp-image-2459\" srcset=\"https:\/\/multimedia.cx\/eggs\/wp-content\/uploads\/2010\/05\/3d-dot-heroes-color-planes.jpg 400w, https:\/\/multimedia.cx\/eggs\/wp-content\/uploads\/2010\/05\/3d-dot-heroes-color-planes-300x200.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><br \/>\n<\/center><\/p>\n<p>This makes it pretty clear where the Y (grey part), U (blue part) and V (red part) planes begin (the green part shows where Y, U, and V components are all 0). It&#8217;s puzzling to think that this would be the encoder&#8217;s doing but it&#8217;s difficult to pin this on a particular decoder since I tried 2 different implementations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Guess what&#8217;s wrong with this video<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2456","post","type-post","status-publish","format-standard","hentry","category-general"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/posts\/2456","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=2456"}],"version-history":[{"count":9,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/posts\/2456\/revisions"}],"predecessor-version":[{"id":2467,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/posts\/2456\/revisions\/2467"}],"wp:attachment":[{"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/media?parent=2456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/categories?post=2456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/multimedia.cx\/eggs\/wp-json\/wp\/v2\/tags?post=2456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}