这是我的一组测试ClearKey DRM播放的文件。
mp4box(gpac) drm.xml规范文件,您可以在其中提供一个或多个PSSH表以生成在init.mp4片段内部。
<?xml version="1.0" encoding="UTF-8" ?>
<GPACDRM type="CENC AES-CTR">
<DRMInfo type="pssh" version="1">
<BS ID128="1077efecc0b24d02ace33c1e52e2fb4b"/>
<BS bits="32" value="1"/>
<BS ID128="43215678123412341234123412341234"/>
</DRMInfo>
<CrypTrack trackID="1" IsEncrypted="1" IV_size="8" first_IV="0x22ee7d4745d3a26a" saiSavedBox="senc">
<key KID="0x43215678123412341234123412341234" value="0x12341234123412341234123412341234"/>
</CrypTrack>
</GPACDRM>
命令行用于加密视频+音频并拆分片段。
MP4Box.exe -crypt gpacdrm.xml temp-v1.mp4 -out ./drm/temp-v1.mp4
MP4Box.exe -crypt gpacdrm.xml temp-a1.mp4 -out ./drm/temp-a1.mp4
MP4Box.exe -dash 6000 -frag 6000 -mem-frags -rap -profile dashavc264:live -profile-ext urn:hbbtv:dash:profile:isoff-live:2012 -min-buffer 3000 -bs-switching no -sample-groups-traf -single-traf -subsegs-per-sidx 1 -segment-name $RepresentationID$_$Number$$Init=i$ -segment-timeline -out manifest.mpd temp-v1.mp4
ShakaPlayer独立演示版,用于ClearKey播放,请使用Chrome或Firefox。我在互联网上找到了这个源代码,所以谁做的应该得到了赞誉。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/shaka-player/2.1.0/shaka-player.compiled.js"></script>
<title>MPEG-DASH Player Test</title>
<script>
var manifestUrl = 'https://my.server.com/drm/manifest_clearkey.mpd';
var laUrl = 'https://my.server.com/drm/laurl_ck.php';
function initApp() {
shaka.polyfill.installAll();
if (shaka.Player.isBrowserSupported()) {
initPlayer();
} else {
console.error('Browser not supported!');
}
}
function initPlayer() {
var video = document.getElementById('video');
var player = new shaka.Player(video);
player.configure({
drm: {
servers: {
'org.w3.clearkey': laUrl
},
clearKeys: {
}
}
});
window.player = player;
player.addEventListener('error', onErrorEvent);
player.load(manifestUrl).then(function () {
console.log('The video has now been loaded!');
}).catch(onError);
}
function onErrorEvent(event) {
onError(event.detail);
}
function onError(error) {
console.error('Error code', error.code, 'object', error);
alert("ErrorCode="+error.code);
}
document.addEventListener('DOMContentLoaded', initApp);
</script>
</head>
<body>
<video id="video" autoplay controls></video>
</body>
</html>
ClearKey DRM "许可证服务器php脚本",播放器发送一个json文档,此脚本返回KID=KEY配对。
<?php
header( "Expires: Mon, 20 Dec 1998 01:00:00 GMT" );
header( "Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT" );
header( "Cache-Control: no-cache, must-revalidate" );
header( "Pragma: no-cache" );
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Headers: origin,range,accept,accept-encoding,referer,content-type, SOAPAction,X-AxDRM-Message');
header('Access-Control-Allow-Methods: GET,HEAD,OPTIONS,POST');
header('Access-Control-Expose-Headers: server,range,content-range,content-length,content-type');
if ($_SERVER['REQUEST_METHOD']=="OPTIONS") {
header("Content-Length: 0");
header("Expires: -1");
return;
}
header('Content-Type: application/json; charset=utf-8');
$req = file_get_contents('php://input');
$json= json_decode($req);
$kidb= $json->{"kids"}[0];
$kid = bin2hex(base64_decode($kidb, true));
$keys = array(
"43215678123412341234123412341234" => "12341234123412341234123412341234",
"43215678123412341234123412341235" => "12341234123412341234123412341235",
"43215678123412341234123412341236" => "12341234123412341234123412341236",
"43215678123412341234123412341237" => "12341234123412341234123412341237",
"43215678123412341234123412341238" => "12341234123412341234123412341238"
);
$key = base64_encode(hex2bin($keys[$kid]));
$key = str_replace("=", "", $key);
$data = "{\"keys\": [{\"k\": \$key, \"kty\": \"oct\", \"kid\": \$kid }], \"type\": \"temporary\"}";
$data = str_replace("\$key", "\"".$key."\"", $data);
$data = str_replace("\$kid", "\"".$kidb."\"", $data);
echo $data;
?>
使用CENC和ClearKey内容保护元素的清单。
<?xml version="1.0" encoding="UTF-8"?>
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:mas="urn:marlin:mas:1-0:services:schemas:mpd" xmlns:mspr="urn:microsoft:playready" maxSegmentDuration="PT0H0M6.000S" mediaPresentationDuration="PT0H1M30.000S" minBufferTime="PT3.000S" profiles="urn:mpeg:dash:profile:isoff-live:2011,http://dashif.org/guidelines/dash264,urn:hbbtv:dash:profile:isoff-live:2012" type="static">
<Period duration="PT0H1M30.000S" id="p0">
<AdaptationSet lang="und" maxFrameRate="25" maxHeight="360" maxWidth="640" par="16:9" segmentAlignment="true" startWithSAP="1">
<ContentProtection cenc:default_KID="43215678-1234-1234-1234-123412341234" schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"/>
<ContentProtection schemeIdUri="urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b">
<cenc:pssh>AAAANHBzc2gBAAAAEHfv7MCyTQKs4zweUuL7SwAAAAFDIVZ4EjQSNBI0EjQSNBI0AAAAAA==</cenc:pssh>
</ContentProtection>
<SegmentTemplate initialization="$RepresentationID$_i.mp4" media="$RepresentationID$_$Number$.m4s" startNumber="1" timescale="1000">
<SegmentTimeline>
<S d="6000" r="14" t="0"/>
</SegmentTimeline>
</SegmentTemplate>
<Representation bandwidth="491773" codecs="avc1.4D4028" frameRate="25" height="360" id="v1" mimeType="video/mp4" sar="1:1" width="640">
</Representation>
</AdaptationSet>
<AdaptationSet lang="und" segmentAlignment="true" startWithSAP="1">
<ContentProtection cenc:default_KID="43215678-1234-1234-1234-123412341234" schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"/>
<ContentProtection schemeIdUri="urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b">
<cenc:pssh>AAAANHBzc2gBAAAAEHfv7MCyTQKs4zweUuL7SwAAAAFDIVZ4EjQSNBI0EjQSNBI0AAAAAA==</cenc:pssh>
</ContentProtection>
<SegmentTemplate initialization="$RepresentationID$_i.mp4" media="$RepresentationID$_$Number$.m4s" startNumber="1" timescale="1000">
<SegmentTimeline>
<S d="5973" t="0"/>
<S d="5995" r="1"/>
<S d="5994"/>
<S d="5995" r="1"/>
<S d="5994"/>
<S d="5995"/>
<S d="5994"/>
<S d="5995" r="2"/>
<S d="5994"/>
<S d="5995" r="1"/>
<S d="101"/>
</SegmentTimeline>
</SegmentTemplate>
<Representation audioSamplingRate="48000" bandwidth="133119" codecs="mp4a.40.2" id="a1" mimeType="audio/mp4">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
</Representation>
</AdaptationSet>
</Period>
</MPD>
Manifest cenc:pssh 包含KID值,如果只使用一个密钥,则生成起来非常容易。请参见pssh元素值的base64tohexdump。
00 00 00 34 70 73 73 68 01 00 00 00
10 77 EF EC C0 B2 4D 02 AC E3 3C 1E 52 E2 FB 4B
00 00 00 01
43 21 56 78 12 34 12 34 12 34 12 34 12 34 12 34
00 00 00 00