@Media Engineer Thank you for your answer. <<Have you tried -[AVPlayerItem selectMediaOption:inMediaSelectionGroup:]? I have tried but unfortunately it also doesn't work for me. I see no changes after applying media option: video is continue playing. (video chunks still downloads) The main goal to "say" player to download only audio segments because we have audio only playlist //.visual doesn't exist  playerView.item?.select(nil, in: asset!.mediaSelectionGroup(forMediaCharacteristic: .legible)!)  playerView.item?.select(audible?.first, in: asset!.mediaSelectionGroup(forMediaCharacteristic: .audible)!) po playerView.item?.currentMediaSelection Optional(<AVMediaSelection: 0x60000206cc40, group characteristics and selected options = { AVMediaCharacteristicAudible : <AVMediaSelectionKeyValueOption: 0x6000037ccf80, language = eng, mediaType = 'soun', title = eng> }>)

To summarize my question: I have the same structure of manifest as in that example https://developer.apple.com/documentation/http_live_streaming/example_playlists_for_http_live_streaming/creating_a_master_playlist: #EXTM3U #EXT-X-STREAM-INF:BANDWIDTH=150000,RESOLUTION=416x234,CODECS="avc1.42e00a,mp4a.40.2" http://example.com/low/index.m3u8 #EXT-X-STREAM-INF:BANDWIDTH=240000,RESOLUTION=416x234,CODECS="avc1.42e00a,mp4a.40.2" http://example.com/lo_mid/index.m3u8 #EXT-X-STREAM-INF:BANDWIDTH=440000,RESOLUTION=416x234,CODECS="avc1.42e00a,mp4a.40.2" http://example.com/hi_mid/index.m3u8 #EXT-X-STREAM-INF:BANDWIDTH=640000,RESOLUTION=640x360,CODECS="avc1.42e00a,mp4a.40.2" http://example.com/high/index.m3u8 #EXT-X-STREAM-INF:BANDWIDTH=64000,CODECS="mp4a.40.5" http://example.com/audio/index.m3u8 And case the next: I play the video with audio (by AVPlayer)-> tap button “Audio mode” and want to switch to “Only audio mode” and play only http://example.com/audio/index.m3u8. without downloading video chunks. Also vice versa(switch from audio only to audio with video). Is It possible? What I have tried: Select media option selectMediaOption as described in developer.apple.com/documentation/avfoundation/mediaplaybackandselection/selectingsubtitlesandalternativeaudiotracks Remove player from view as described in developer.apple.com/documentation/avfoundation/mediaplaybackandselection/creatingabasicvideoplayeriosandtvos/playingaudiofromavideoassetinthebackground Set player view frame to 0x0 All above options together And the result in all cases the same: Audio is playing but I see(by Charles proxy) that AVPLayer also download video chunks. Is it possible to avoid downloading video chunks and save user traffic?