{"id":786,"date":"2012-08-24T15:25:29","date_gmt":"2012-08-24T13:25:29","guid":{"rendered":"http:\/\/www.alkannoide.com\/?p=786"},"modified":"2019-08-23T16:08:34","modified_gmt":"2019-08-23T14:08:34","slug":"microsoft-azure-media-services-how-to-encode-in-the-azure-cloud-part-1","status":"publish","type":"post","link":"https:\/\/www.alkannoide.com\/2012\/08\/24\/microsoft-azure-media-services-how-to-encode-in-the-azure-cloud-part-1\/","title":{"rendered":"Microsoft Azure Media Services &#8211; How to encode in the Azure Cloud &#8211; Part 1"},"content":{"rendered":"<p>I open a serie of posts which will talk about this solution.&nbsp;Microsoft announced at the end of spring the preview of <a href=\"https:\/\/www.windowsazure.com\/en-us\/develop\/net\/how-to-guides\/media-services\/#what-are\">Windows Azure Media Services<\/a>. WAMS&nbsp;form an extensible media platform that integrates the best of the Microsoft Media Platform and third-party media components in Windows Azure.<\/p>\n<p><!--more--><\/p>\n<h2>Overview<\/h2>\n<p>WAMS can transform movie in differents formats and codecs :<\/p>\n<ul>\n<li>Supported video and audio codecs:\n<ul>\n<li>H.264 High, Main and Baseline Profiles<\/li>\n<li>AAC-LC<\/li>\n<li>HE-AAC<\/li>\n<li>VC-1 (Windows Media Video 9) Simple, Main and Advanced Profiles<\/li>\n<li>Windows Media Audio Standard<\/li>\n<li>Windows Media Audio Professional<\/li>\n<\/ul>\n<\/li>\n<li>Supported format conversions:\n<ul>\n<li>ISO MP4 (.mp4) to Smooth Streaming File Format (PIFF 1.3) (.ismv; .isma)<\/li>\n<li>Smooth Streaming File Format (PIFF) to Apple HTTP Live Streaming (.msu8, .ts)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>For the moment, you can only make VoD video.<br \/>\nIt is already possible to encrypt your content (via PlayReady DRM). You can manage it via <a href=\"http:\/\/msdn.microsoft.com\/en-us\/library\/hh973613\">.NET<\/a> or <a href=\"http:\/\/msdn.microsoft.com\/en-us\/library\/hh973618\">REST API<\/a>. I&#8217;m not a .NET developer, so I will try the solution via API. My code side will be in PHP.<\/p>\n<h2>Setup<\/h2>\n<p>First of all, you need to <a href=\"http:\/\/social.msdn.microsoft.com\/Forums\/en-US\/MediaServices\/thread\/a9d3d1b4-09eb-4a28-ad1d-a1f4cf3123cb\">setup your account to use WAMS<\/a>. Currently, the setup is only possible via Powershell, but it will change via the Azure portal.&nbsp;For this step, you need a Windows, but after you can use other OS.<\/p>\n<p>To connect to Media services, you need two things : 1) an access token provided by Windows Azure Access Control Services (ACS) and 2) the URI of Media Services itself. To get the token, you make a <a href=\"http:\/\/msdn.microsoft.com\/en-us\/library\/hh973616\">OAuth request<\/a>&nbsp;with the parameter you get when you setup your account : the access key and the client ID. Different&nbsp;libraries are available in different langage to make this kind of request, for me, I create a simple PHP method to manage it.<\/p>\n<pre><pre class=\"brush: php; title: ; notranslate\" title=\"\">class Rest{\n\n\tprotected $strUrl;\n\n\tprotected $strToken;\n\n\tprotected $strBody;\n\n\tpublic function requestToken(){\n\t\tif (!file_exists(TOKEN_STORAGE)){\n\t\t\techo 'Get Token from storage'.\"\\n\";\n\t\t\t$data = file_get_contents(TOKEN_STORAGE);\n\t\t\t$arrToken = json_decode($data);\n\t\t\tif ((filemtime(TOKEN_STORAGE) + $arrToken-&amp;gt;expires_in) &amp;gt; time()) {\n\t\t\t\t$this-&amp;gt;strToken = $arrToken-&amp;gt;access_token;\n\t\t\t} else {\n\t\t\t\techo 'Token expired'.\"\\n\";\n\t\t\t\tunlink(TOKEN_STORAGE);\n\t\t\t\t$this-&amp;gt;requestToken();\n\t\t\t}\n\t\t} else {\n\t\t\techo 'Get new token from API'.\"\\n\";\n\t\t\t$arrData = array(\n\t\t\t\t'grant_type=client_credentials',\n\t\t\t\t'client_id='.CLIENT_ID,\n\t\t\t\t'client_secret='.urlencode(ACCESS_KEY),\n\t\t\t\t'scope=urn%3aWindowsAzureMediaServices'\n\t\t\t);\n\t\t\t$arrHeader = array(\n\t\t\t\t'Content-length:'.strlen($this-&amp;gt;generateData($arrData))\n\t\t\t);\n\n\t\t\t$ch = curl_init();\n\t\t\tcurl_setopt($ch, CURLOPT_URL, TOKEN_URL);\n\t\t\tcurl_setopt($ch, CURLOPT_POSTFIELDS, $this-&amp;gt;generateData($arrData));\n\t\t\tcurl_setopt($ch, CURLOPT_HTTPHEADER, $arrHeader);\n\t\t\tcurl_setopt($ch, CURLOPT_RETURNTRANSFER, true);\n\t\t\t$data = curl_exec($ch);\n\t\t\tcurl_close($ch);\n\n\t\t\t$arrToken = json_decode($data);\n\t\t\tif (isset($arrToken-&amp;gt;error)){\n\t\t\t\tprint_r($arrToken);\n\t\t\t\tdie();\n\t\t\t}\n\t\t\t$this-&amp;gt;strToken = $arrToken-&amp;gt;access_token;\n\t\t\tfile_put_contents(TOKEN_STORAGE, $data);\n\t\t\techo 'Token save in storage'.\"\\n\";\n\t\t}\n\t     return $this-&amp;gt;strToken;\n\t}\n}<\/pre>\n<p>The AMS response will contains the token.&nbsp;If you make many calls, I suggest to cache the access token, the expires_in value and the timestamp of the request to avoid unnecessary calls.<\/p>\n<p>Now, we have a token to access, we can play with the Azure Media Services. We will see it in next posts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I open a serie of posts which will talk about this solution.&nbsp;Microsoft announced at the end of spring the preview of Windows Azure Media Services. WAMS&nbsp;form an extensible media platform that integrates the best of the Microsoft Media Platform and third-party media components in Windows Azure.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[57,48,46],"tags":[],"_links":{"self":[{"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/posts\/786"}],"collection":[{"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/comments?post=786"}],"version-history":[{"count":31,"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/posts\/786\/revisions"}],"predecessor-version":[{"id":1928,"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/posts\/786\/revisions\/1928"}],"wp:attachment":[{"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/media?parent=786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/categories?post=786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alkannoide.com\/wp-json\/wp\/v2\/tags?post=786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}