IE 11 DRM support query reports only limited set of codecs

[Ross-cz]

Using Win 10 & Intel HD 5500 GPU latest drivers I get limited list of the supported codecs.

Test case:

1. use IE11 url https://shaka-player-demo.appspot.com/demo/
2. select asset "Tears of Steel (PlayReady)"
3. two issues:
   a) find Info section and expand Video tracks - only 124 & 208 qualities appears
   b) 1080p is active stream and shows error on the demo site (inc. edge):
   Shaka Error DRM.LICENSE_REQUEST_FAILED (shaka.util.Error { "category": 1, "code": 1002, "data": [ "https://playready.directtaps.net/pr/svc/rightsmanager.asmx?PlayRight=1&UseSimpleNonPersistentLicense=1" ], "message": "Shaka Error NETWORK.HTTP_ERROR (https://playready.directtaps.net/pr/svc/rightsmanager.asmx?PlayRight=1&UseSimpleNonPersistentLicense=1)", "stack": "Error: Shaka Error NETWORK.HTTP_ERROR (https://playready.directtaps.net/pr/svc/rightsmanager.asmx?PlayRight=1&UseSimpleNonPersistentLicense=1)\n at shaka.util.Error (https://shaka-player-demo.appspot.com/lib/util/error.js:77:7)\n at xhr.onerror (https://shaka-player-demo.appspot.com/lib/net/http_plugin.js:77:7)" })

Video streams were filtered by method shaka.util.StreamUtils.filterPeriod because of logic inside shaka.media.DrmEngine.prototype.queryMediaKeys_ . To prevent filtering I used easy workaround - already included Edge browser hack (this.supportedTypes_ = null;).

Here is support info. Created using: shaka.Player.support().then(function (a) {console.log(JSON.stringify(a))})
IE 11 (11.306.10586.0):
{"manifest":{"basic":true,"application/dash+xml":true,"mpd":true,"application/x-mpegurl":false,"application/vnd.apple.mpegurl":false,"application/vnd.ms-sstr+xml":false,"m3u8":false,"ism":false},"media":{"basic":true,"video/mp4; codecs="avc1.42E01E"":true,"video/mp4":true,"audio/mp4; codecs="mp4a.40.2"":true,"audio/mp4":true,"video/webm; codecs="vp8"":false,"video/webm":false,"video/webm; codecs="vp9"":false,"audio/webm; codecs="vorbis"":false,"audio/webm":false,"audio/webm; codecs="opus"":false,"video/mp2t; codecs="avc1.42E01E"":false,"video/mp2t":false,"video/mp2t; codecs="mp4a.40.2"":false,"text/vtt":true,"application/mp4; codecs="wvtt"":false,"application/mp4":false,"application/ttml+xml":false,"application/mp4; codecs="stpp"":false},"drm":{"basic":true,"org.w3.clearkey":false,"com.widevine.alpha":false,"com.microsoft.playready":true,"com.apple.fps.2_0":false,"com.apple.fps.1_0":false,"com.apple.fps":false,"com.adobe.primetime":false},"supported":true}

Chrome 50.0.2661.102 m (production):
{"manifest":{"basic":true,"application/dash+xml":true,"mpd":true,"application/x-mpegurl":false,"application/vnd.apple.mpegurl":false,"application/vnd.ms-sstr+xml":false,"m3u8":false,"ism":false},"media":{"basic":true,"video/mp4; codecs="avc1.42E01E"":true,"video/mp4":true,"audio/mp4; codecs="mp4a.40.2"":true,"audio/mp4":true,"video/webm; codecs="vp8"":true,"video/webm":true,"video/webm; codecs="vp9"":true,"audio/webm; codecs="vorbis"":true,"audio/webm":true,"audio/webm; codecs="opus"":true,"video/mp2t; codecs="avc1.42E01E"":false,"video/mp2t":false,"video/mp2t; codecs="mp4a.40.2"":false,"text/vtt":true,"application/mp4; codecs="wvtt"":false,"application/mp4":false,"application/ttml+xml":false,"application/mp4; codecs="stpp"":false},"drm":{"basic":true,"org.w3.clearkey":true,"com.widevine.alpha":true,"com.microsoft.playready":false,"com.apple.fps.2_0":false,"com.apple.fps.1_0":false,"com.apple.fps":false,"com.adobe.primetime":false},"supported":true}

Edge (25.10586.0 / 13.10586):
{"manifest":{"basic":true,"application/dash+xml":true,"mpd":true,"application/x-mpegurl":false,"application/vnd.apple.mpegurl":false,"application/vnd.ms-sstr+xml":false,"m3u8":false,"ism":false},"media":{"basic":true,"video/mp4; codecs="avc1.42E01E"":true,"video/mp4":true,"audio/mp4; codecs="mp4a.40.2"":true,"audio/mp4":true,"video/webm; codecs="vp8"":false,"video/webm":false,"video/webm; codecs="vp9"":false,"audio/webm; codecs="vorbis"":false,"audio/webm":false,"audio/webm; codecs="opus"":false,"video/mp2t; codecs="avc1.42E01E"":true,"video/mp2t":true,"video/mp2t; codecs="mp4a.40.2"":true,"text/vtt":true,"application/mp4; codecs="wvtt"":false,"application/mp4":false,"application/ttml+xml":false,"application/mp4; codecs="stpp"":false},"drm":{"basic":true,"org.w3.clearkey":false,"com.widevine.alpha":false,"com.microsoft.playready":true,"com.apple.fps.2_0":false,"com.apple.fps.1_0":false,"com.apple.fps":false,"com.adobe.primetime":false},"supported":true}

[joeyparrish]

This looks similar to a DRM filtering bug we fixed incidentally in a644900. Can you try again with the latest from master and let us know if that fixed your issue as well?

[Ross-cz]

Issue still persists.

There is incompatibility for MSIE 11 inside this part of code:

        // Edge 13 fails this negotiation with NotSupportedError if more than
          // one entry is given, even if each entry individually would be
          // supported.  Bug filed: https://goo.gl/vr2Vle
          if (drmInfo.keySystem == 'com.microsoft.playready' &&
              **capabilities.length**) {
            return;
          }
          capabilities.push({
            robustness: robustness,
            contentType: fullMimeType
          });

Code comment is incorrect for the condition and this causes only one video codec selection inside patchedmediakeys_20140218 polyfill.

[joeyparrish]

Ah, I see. Because the polyfill actually supports and can query multiple capabilities, it returns the filtered list of types. So only sending one to the polyfill causes the manifest to inappropriately filtered.

I expect the Edge bug to be fixed in the near future, and we should be able to restrict the workaround to just Edge until then. Thanks for the report!

[joeyparrish]

I tested the fix on IE11 and Edge. @Ross-cz, would you please retest with the latest from master and confirm the fix for us?