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https://github.com/yt-dlp/yt-dlp
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[extractor] Parse DASH-SEA content protection in DASH manifests
This commit is contained in:
Peter Rowlands
parent
6b0ce31939
commit
e0ce6eed92
3 changed files with 211 additions and 18 deletions
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@ -1473,6 +1473,71 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
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'has_drm': True,
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}],
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{},
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), (
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# DASH SEA with AES-128-CBC
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'dash_sea',
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'https://unknown/manifest.mpd', # mpd_url
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'https://unknown/', # mpd_base_url
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[{
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'manifest_url': 'https://unknown/manifest.mpd',
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'ext': 'm4a',
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'format_id': '5_A_aac_eng_2_127999_2_1_1',
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'format_note': 'DASH audio',
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'protocol': 'http_dash_segments',
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'acodec': 'mp4a.40.2',
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'vcodec': 'none',
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'tbr': 127.999,
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'hls_aes': {
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'uri': 'https://zavideoplatform.keydelivery.eastus.media.azure.net/?kid=9280864f-064e-48c0-97e0-f2bcb1d8d012',
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'iv': '0x7BD31E102B0CE9CCD39691782533656C',
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},
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}, {
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'manifest_url': 'https://unknown/manifest.mpd',
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'ext': 'mp4',
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'format_id': '1_V_video_3',
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'format_note': 'DASH video',
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'protocol': 'http_dash_segments',
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'acodec': 'none',
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'vcodec': 'avc1.64001F',
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'tbr': 258.591,
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'width': 960,
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'height': 540,
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'hls_aes': {
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'uri': 'https://zavideoplatform.keydelivery.eastus.media.azure.net/?kid=9280864f-064e-48c0-97e0-f2bcb1d8d012',
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'iv': '0x7BD31E102B0CE9CCD39691782533656C',
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},
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}, {
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'manifest_url': 'https://unknown/manifest.mpd',
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'ext': 'mp4',
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'format_id': '1_V_video_2',
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'format_note': 'DASH video',
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'protocol': 'http_dash_segments',
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'acodec': 'none',
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'vcodec': 'avc1.64001F',
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'tbr': 422.519,
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'width': 1280,
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'height': 720,
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'hls_aes': {
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'uri': 'https://zavideoplatform.keydelivery.eastus.media.azure.net/?kid=9280864f-064e-48c0-97e0-f2bcb1d8d012',
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'iv': '0x7BD31E102B0CE9CCD39691782533656C',
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},
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}, {
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'manifest_url': 'https://unknown/manifest.mpd',
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'ext': 'mp4',
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'format_id': '1_V_video_1',
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'format_note': 'DASH video',
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'protocol': 'http_dash_segments',
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'acodec': 'none',
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'vcodec': 'avc1.640028',
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'tbr': 628.102,
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'width': 1920,
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'height': 1080,
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'hls_aes': {
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'uri': 'https://zavideoplatform.keydelivery.eastus.media.azure.net/?kid=9280864f-064e-48c0-97e0-f2bcb1d8d012',
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'iv': '0x7BD31E102B0CE9CCD39691782533656C',
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},
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}],
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{},
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),
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]
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109
test/testdata/mpd/dash_sea.mpd
vendored
Normal file
109
test/testdata/mpd/dash_sea.mpd
vendored
Normal file
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@ -0,0 +1,109 @@
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<?xml version="1.0" encoding="utf-8"?>
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<MPD
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xmlns="urn:mpeg:dash:schema:mpd:2011"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static"
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xmlns:sea="urn:mpeg:dash:schema:sea:2012" mediaPresentationDuration="PT3M32.949S" minBufferTime="PT3S">
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<Period>
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<AdaptationSet id="1" group="5" profiles="ccff" bitstreamSwitching="false" segmentAlignment="true" contentType="audio" mimeType="audio/mp4" codecs="mp4a.40.2" lang="en">
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<ContentProtection schemeIdUri="urn:mpeg:dash:sea:2012">
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<sea:SegmentEncryption schemeIdUri="urn:mpeg:dash:sea:aes128-cbc:2013"/>
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<sea:KeySystem keySystemUri="urn:mpeg:dash:sea:keysys:http:2013"/>
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<sea:CryptoPeriod keyUriTemplate="https://zavideoplatform.keydelivery.eastus.media.azure.net/?kid=9280864f-064e-48c0-97e0-f2bcb1d8d012" IV="0x7BD31E102B0CE9CCD39691782533656C"/>
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</ContentProtection>
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<Label>aac_eng_2_127999_2_1</Label>
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<SegmentTemplate timescale="10000000" media="QualityLevels($Bandwidth$)/Fragments(aac_eng_2_127999_2_1=$Time$,format=mpd-time-csf)" initialization="QualityLevels($Bandwidth$)/Fragments(aac_eng_2_127999_2_1=i,format=mpd-time-csf)">
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<SegmentTimeline>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333" r="1"/>
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<S d="20053334"/>
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<S d="20053333"/>
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<S d="3840000"/>
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</SegmentTimeline>
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</SegmentTemplate>
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<Representation id="5_A_aac_eng_2_127999_2_1_1" bandwidth="127999" audioSamplingRate="48000"/>
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</AdaptationSet>
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<AdaptationSet id="2" group="1" profiles="ccff" bitstreamSwitching="false" segmentAlignment="true" contentType="video" mimeType="video/mp4" codecs="avc1.640028" maxWidth="1920" maxHeight="1080" startWithSAP="1">
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<ContentProtection schemeIdUri="urn:mpeg:dash:sea:2012">
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<sea:SegmentEncryption schemeIdUri="urn:mpeg:dash:sea:aes128-cbc:2013"/>
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<sea:KeySystem keySystemUri="urn:mpeg:dash:sea:keysys:http:2013"/>
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<sea:CryptoPeriod keyUriTemplate="https://zavideoplatform.keydelivery.eastus.media.azure.net/?kid=9280864f-064e-48c0-97e0-f2bcb1d8d012" IV="0x7BD31E102B0CE9CCD39691782533656C"/>
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</ContentProtection>
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<SegmentTemplate timescale="10000000" media="QualityLevels($Bandwidth$)/Fragments(video=$Time$,format=mpd-time-csf)" initialization="QualityLevels($Bandwidth$)/Fragments(video=i,format=mpd-time-csf)">
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<SegmentTimeline>
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<S d="20000000" r="105"/>
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<S d="8666666"/>
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</SegmentTimeline>
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</SegmentTemplate>
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<Representation id="1_V_video_1" bandwidth="628102" width="1920" height="1080"/>
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<Representation id="1_V_video_2" bandwidth="422519" codecs="avc1.64001F" width="1280" height="720"/>
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<Representation id="1_V_video_3" bandwidth="258591" codecs="avc1.64001F" width="960" height="540"/>
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</AdaptationSet>
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</Period>
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</MPD>
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@ -248,7 +248,9 @@ class InfoExtractor:
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* hls_aes A dictionary of HLS AES-128 decryption information
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used by the native HLS downloader to override the
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values in the media playlist when an '#EXT-X-KEY' tag
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is present in the playlist:
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is present in the playlist. Used by the native DASH downloader
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when DASH-SEA with AES-128-CBC content protection is present
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in the manifest.:
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* uri The URI from which the key will be downloaded
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* key The key (as hex) used to decrypt fragments.
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If `key` is given, any key URI will be ignored
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@ -261,7 +263,8 @@ class InfoExtractor:
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* is_dash_periods Whether the format is a result of merging
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multiple DASH periods.
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* dash_cenc A dictionary of DASH CENC decryption information
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used by the native DASH downloader when set.
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used by the native DASH downloader when MPEG CENC content protection
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is present in the manifest.
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* laurl The Clear Key license server URL from which
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CENC keys will be downloaded.
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* key_ids List of key IDs (as hex) to request from the ClearKey
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@ -2680,10 +2683,11 @@ class InfoExtractor:
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assert 'is_dash_periods' not in f, 'format already processed'
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f['is_dash_periods'] = True
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format_key = tuple(v for k, v in f.items() if k not in (
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('format_id', 'fragments', 'manifest_stream_number', 'dash_cenc')))
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if 'dash_cenc' in f:
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format_key = format_key + tuple(
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tuple(v) if isinstance(v, list) else v for v in f['dash_cenc'].values())
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('format_id', 'fragments', 'manifest_stream_number', 'dash_cenc', 'hls_aes')))
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for k in ('dash_cenc', 'hls_aes'):
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if k in f:
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format_key = format_key + tuple(
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tuple(v) if isinstance(v, list) else v for v in f[k].values())
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if format_key not in formats:
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formats[format_key] = f
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elif 'fragments' in f:
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@ -2718,15 +2722,13 @@ class InfoExtractor:
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return self._xpath_ns(path, namespace)
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def extract_drm_info(element):
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info = {}
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has_drm = False
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cenc_info = {}
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for cp_e in element.findall(_add_ns('ContentProtection')):
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has_drm = True
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self._extract_mpd_content_protection_info(cp_e, cenc_info)
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info = {'dash_cenc': cenc_info} if cenc_info else {}
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if has_drm and not (
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cenc_info.get('key') or cenc_info.get('laurl') and cenc_info.get('key_ids')
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):
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self._extract_mpd_content_protection_info(cp_e, info)
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cenc_info = info.get('dash_cenc', {})
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if has_drm and not ('hls_aes' in info or cenc_info.get('key') or (cenc_info.get('laurl') and cenc_info.get('key_ids'))):
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info['has_drm'] = True
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return info
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@ -3051,7 +3053,7 @@ class InfoExtractor:
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period_entry['subtitles'][lang or 'und'].append(f)
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yield period_entry
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def _extract_mpd_content_protection_info(self, cp_e, cenc_info):
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def _extract_mpd_content_protection_info(self, cp_e, info):
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"""
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Extract supported DASH-CENC parameters for an MPD ContentProtection element.
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@ -3061,13 +3063,16 @@ class InfoExtractor:
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from the manifest or when an extractor needs to process the optional data section in W3C
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PSSH boxes).
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Note that the `has_drm` flag will be set for any format that does not meet one or more
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of these conditions:
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Note that after all ContentProtection elements have been handled, the `has_drm` flag
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will be set for any format that does not meet one or more of these conditions:
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* Both `laurl` and `key_ids` are set (indicating the native DASH downloader should
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use the specified Clear Key server URL to retreive the CENC key for this format.
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* `key_id` is set (indicating the native DASH downloader should use the specified
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* `dash_cenc` is set and both `laurl` and `key_ids` are set (indicating the native
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DASH downloader should use the specified Clear Key server URL to retreive the
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CENC key for this format).
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* `dash_cenc` is set and `key` is set (indicating the native DASH downloader should
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use the specified CENC key for this format).
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* `hls_aes` is set (indicating the native DASH downloader should use DASH SEA
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AES-128-CBC decryption for this format).
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References:
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1. DASH-IF Content Protection Identifiers
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@ -3078,6 +3083,7 @@ class InfoExtractor:
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https://w3c.github.io/encrypted-media/format-registry/initdata/cenc.html
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"""
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scheme_id = cp_e.get('schemeIdUri')
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cenc_info = info.get('dash_cenc', {})
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if scheme_id == 'urn:mpeg:dash:mp4protection:2011':
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if cp_e.get('value') == 'cenc':
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# ISO/IEC 23009-1 MPEG Common Encryption (CENC)
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@ -3113,6 +3119,19 @@ class InfoExtractor:
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cenc_info['key_ids'] = kids
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except (ValueError, TypeError, struct.error):
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pass
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elif scheme_id == 'urn:mpeg:dash:sea:2012':
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# ISO/IEC 23009-4 DASH Segment Encryption and Authentication (AES-128-CBC)
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sea_ns = 'urn:mpeg:dash:schema:sea:2012'
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se_e = cp_e.find(self._xpath_ns('SegmentEncryption', sea_ns))
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ks_e = cp_e.find(self._xpath_ns('KeySystem', sea_ns))
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crypto_e = cp_e.find(self._xpath_ns('CryptoPeriod', sea_ns))
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if (se_e is not None and se_e.get('schemeIdUri') == 'urn:mpeg:dash:sea:aes128-cbc:2013'
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and ks_e is not None and ks_e.get('keySystemUri') == 'urn:mpeg:dash:sea:keysys:http:2013'
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and crypto_e is not None and crypto_e.get('keyUriTemplate') and crypto_e.get('IV')
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):
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info['hls_aes'] = {'uri': crypto_e.get('keyUriTemplate'), 'iv': crypto_e.get('IV')}
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if cenc_info:
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info['dash_cenc'] = cenc_info
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def _extract_ism_formats(self, *args, **kwargs):
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fmts, subs = self._extract_ism_formats_and_subtitles(*args, **kwargs)
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