I would like to perform pathway cloning as described in the video Deliver reliable streams with HLS Content Steering and the document draft-pantos-hls-rfc8216bis-12. Unfortunately, I keep getting an error: CoreMediaErrorDomain (Code: -15881): Content Steering: error in handling Steering Manifest, ignoring and continue playback. The client device is an iPhone (iOS 16.2). There is a video accessible from an "azure" CDN and a video accessible from an "edge" CDN. I want the player, which is playing the video from the azure CDN, to switch to the edge CDN. This is the manifest received by the player: #EXTM3U #EXT-X-CONTENT-STEERING:SERVER-URI="https://example.com/content-steering?pathwaycloning=true",PATHWAY-ID="azure" #EXT-X-STREAM-INF:BANDWIDTH=5605600,RESOLUTION=416x240,CODECS="avc1.64001e,mp4a.40.2",PATHWAY-ID="azure" https://azure.com/contentsteering/stream_0/stream.m3u8 This is the steering manifest received by the player (every 10s, as specified by TTL): {     "VERSION": 1,     "TTL": 10,     "RELOAD-URI": "https://example.com/content-steering?pathwaycloning=true",     "PATHWAY-PRIORITY": [         "edge",         "azure",         "aws"     ],     "PATHWAY-CLONES": [         {             "BASE-ID": "azure",             "ID": "edge",             "URI-REPLACEMENT": {                 "HOST": "edge.com"             }         }     ] } I would expect the player to request the media files (stream.m3u8, data00.ts, data01.ts...) at https://edge.com/contentsteering/stream_0/. It doesn't, however, and instead I get the error specified in bold above. Any idea what is wrong with my steering manifest?

What is the first version of iOS to support pathway cloning as part of content steering? Is it supported in safari browsers via the html video tag? I can switch between pathways defined in the manifest file, but when I try to clone a pathway and introduce a new pathway id my stream stops.