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Code Block
themeRDark
hls_ll_enabled=true
hls_auto_start=true
hls_preloader_enabled=false
hls_player_width=848
hls_player_height=480
video_filter_enable_fps=true
video_filter_fps=30
video_encoder_h264_gop=60

Since build 5.2.1965, the following parameter is enough to play LL HLS, a defaults may be used for other settings

Code Block
themeRDark
hls_ll_enabled=true

Using HTTP/2 and HTTP/1

According to specification, LL HLS must be played using HTTP/2, i.e. via secure connection

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To restore default preloader it is enough to remove custom preloader files and restart WCS.

A settings applied both for LL and non-LL HLS

Since build 5.2.1965 all the settings with hls_ prefix are applied both to LL and non-LL HLS.

The following parameters are applied to LL HLS only and not applied to non-LL HLS

ParameterDecsriptionDefault value
ll_hls_max_number_of_parent_segments_containing_partialsA maximum partial segments number per one full segment5

ll_hls_part_hold_back_count

PART-HOLD-BACK attribute value in playlist6

ll_hls_partial_time_max

A maximum partial segment size in milliseconds400

m4s container support

Since build 5.2.1626 m4s container is supported for HLS segments cut, and since build 5.2.1632 the container is enabled by default for HLS ABR too

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