Broken CMAF protocol

[Taiwan22]

Hello, I'm trying to get CMAF (LL‑HLS) working, but unless I check the "Send whole segments" option, the playback freezes after about 2 seconds in the Mist player and doesn't open at all in VLC.

Is this option necessary to enable, or am I missing something? I'm testing it with the default stream settings (playing a local MP4 file) and with both HTTP and HTTPS configured.

Normally I use the OvenMediaEngine solution for playback, because I haven't been able to get truly low‑latency HLS working with the native MistServer solution.

12:14:28.965 Initializing..
12:14:28.968 Opening stream status stream through websocket..
12:14:29.147 Stream info was loaded succesfully.
12:14:29.150 Checking available players..
12:14:29.153 Found a working combo: HLS.js player with http://example.com:10090/cmaf/test_video/index.m3u8?tkn=855713574 (Score: 3)
12:14:29.153 Selected: HLS.js player with html5/application/vnd.apple.mpegurl;version=7 @ http://example.com:10090/cmaf/test_video/index.m3u8?tkn=855713574
12:14:29.157 Building new player
12:14:29.164 Not appending chromecast script - still loading
12:14:29.225 Player size calculated: 1280 x 720 px
12:14:29.228 Initialized
12:14:29.252 Enabling monitor
12:14:29.256 Player event fired: loadstart
12:14:29.390 Chromecast is not supported
12:14:30.110 Player event fired: loadedmetadata
12:14:30.120 Player event fired: volumechange
12:14:30.159 Disabling monitor
12:14:30.165 Player event fired: loadeddata
12:14:30.169 Player event fired: canplay
12:14:30.187 Enabling monitor
12:14:30.191 Player event fired: play
12:14:30.201 Player event fired: playing
12:14:30.207 Autoplay worked! muted:false
12:14:32.264 Player event fired: waiting
12:14:40.207 Error: Poor playback: 12%
12:14:40.367 Removing error window because of canplay event
12:14:40.371 Player event fired: canplay
12:14:40.379 Player event fired: playing
12:14:41.211 Error: Poor playback: 70%
12:14:42.498 Player event fired: waiting
12:14:50.574 Removing error window because of canplay event
12:14:50.580 Player event fired: canplay
12:14:50.589 Player event fired: playing
12:14:51.225 Error: Poor playback: 49%
12:14:52.711 Player event fired: waiting
12:15:00.765 Removing error window because of canplay event
12:15:00.770 Player event fired: canplay
12:15:00.774 Player event fired: playing

Thank you.

[Rokamun]

Hey there,

Yes, the current CMAF implementation is on our todo list for the upcoming release. We've made a few adjustments already, but we're not quite happy with it yet.
I'll see if we can provide a better CMAF implementation in our developments sooner than later, but I suspect it'll be a week or 2 before we're happy at the very least.

Currently I would recommend WHEP output if you want low latency. However it requiring Opus audio and Video without bframes makes it quite annoying.