Hello, our application is unable to HDMI output FairPlay protected content to TV via official Lightning HDMI AV Adapter, by checking the console log on mediaplayerd it is found that a CoreMediaErrorDomain Code=-19156 is raised, but we are unable to know what this error code means. default 11:18:15.121584+0800 mediaplaybackd keyboss ckb_customURLReadCallback: 0x7fa62f800 60/0 customURLReqID 4 isComplete 1 err -19156 error <private> (0) dokeyCallbacksExist 0 default 11:18:15.121670+0800 mediaplaybackd keyboss ckb_processErrorForRequest: 0x7fa62f800 60/0 handler 4 err 0 default 11:18:15.121752+0800 mediaplaybackd <<<< FigCustomURLHandling >>>> curll_cancelRequestOnQueue: 0x7fa031360: requestID: 4 default 11:18:15.121932+0800 mediaplaybackd keyboss ckb_transitionRequestToTerminalState: 0x7fa62f800 60/0 reqFin err Error Domain=CoreMediaErrorDomain Code=-19156 (-19156) dokeyCallbacksExist 0 default 11:18:15.122025+0800 mediaplaybackd keyboss ckb_transitionRequestToTerminalState: 0x7fa62f800 60/0 retry default 11:18:15.123195+0800 mediaplaybackd <<<< FigCPECryptorPKD >>>> PostKeyRequestErrorOccurred: 0x7fab7be80 029592C2-093D-400D-B57F-7AB06CC292D1 key request error: Error Domain=CoreMediaErrorDomain Code=-19160 (-19160)

It seems currently 5G Network Slicing is only available on URL Request / URL Session / Low level network and not on AVPlayer, is it possible to have the app using default slice when start the app and only enable Network Slicing when streaming video via AVPlayer?

We found that when we only set one App Category and one Traffic Category in Xcode entitlements, the built application will contain all App Categories and Traffic Categories in the embedded.mobileprovision file, is it expected? Entitlements file: &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"&gt; &lt;plist version="1.0"&gt; &lt;dict&gt; &lt;key&gt;com.apple.developer.networking.slicing.appcategory&lt;/key&gt; &lt;array&gt; &lt;string&gt;streaming-9001&lt;/string&gt; &lt;/array&gt; &lt;key&gt;com.apple.developer.networking.slicing.trafficcategory&lt;/key&gt; &lt;array&gt; &lt;string&gt;avstreaming-7&lt;/string&gt; &lt;/array&gt; &lt;/dict&gt; &lt;/plist&gt; embedded.mobileprovision: &lt;key&gt;Entitlements&lt;/key&gt; &lt;dict&gt; &lt;key&gt;com.apple.developer.networking.slicing.appcategory&lt;/key&gt; &lt;array&gt; &lt;string&gt;communication-9000&lt;/string&gt; &lt;string&gt;games-6014&lt;/string&gt; &lt;string&gt;streaming-9001&lt;/string&gt; &lt;/array&gt; &lt;key&gt;com.apple.developer.networking.slicing.trafficcategory&lt;/key&gt; &lt;array&gt; &lt;string&gt;defaultslice-1&lt;/string&gt; &lt;string&gt;video-2&lt;/string&gt; &lt;string&gt;background-3&lt;/string&gt; &lt;string&gt;voice-4&lt;/string&gt; &lt;string&gt;callsignaling-5&lt;/string&gt; &lt;string&gt;responsivedata-6&lt;/string&gt; &lt;string&gt;avstreaming-7&lt;/string&gt; &lt;string&gt;responsiveav-8&lt;/string&gt; &lt;/array&gt;

We found that when enabled FairPlay to streams that uses AVC video codec and AC-3 + MP4 audio codec, the playback fails on some devices with CoreMedia error 1718449215 after started playback for about a second. Successful playback devices: iPhone SE Failed playback devices: iPhone 12 Pro, iPhone 14 Pro