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Upgrade hls.js and set in low latency mode. v6.0.112 (#3924)

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HLS typically has a delay of around 30 seconds, roughly comprising three
segments, each lasting 10 seconds. We can reduce the delay to about 5
seconds by lowering the segment duration to 2 seconds and starting
playback from the last segment, achieving a stable delay.

Of course, this requires setting the OBS's GOP to 1 second, and the
profile to baseline, preset to fast, and tune to zerolatency.
Additionally, updating a few configurations in the hls.js player is
necessary, such as setting it to start playback from the last segment,
setting the maximum buffer, and initiating accelerated playback to
reduce latency.

---------

Co-authored-by: chundonglinlin <chundonglinlin@163.com>
Co-authored-by: john <hondaxiao@tencent.com>
This commit is contained in:
Winlin 2024-02-05 21:37:29 +08:00 • committed by GitHub
parent 4ca7684e36
commit 22c2469414
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16 changed files with 148 additions and 93 deletions
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4
trunk/src/app/srs_app_srt_source.hpp
View file

@ -111,13 +111,13 @@ private:
srs_error_t on_ts_video_avc(SrsTsMessage* msg, SrsBuffer* avs);
srs_error_t on_ts_audio(SrsTsMessage* msg, SrsBuffer* avs);
srs_error_t check_sps_pps_change(SrsTsMessage* msg);
srs_error_t on_h264_frame(SrsTsMessage* msg, std::vector<std::pair<char*, int> >& ipb_frames);
srs_error_t on_h264_frame(SrsTsMessage* msg, std::vector< std::pair<char*, int> >& ipb_frames);
srs_error_t check_audio_sh_change(SrsTsMessage* msg, uint32_t pts);
srs_error_t on_aac_frame(SrsTsMessage* msg, uint32_t pts, char* frame, int frame_size);
#ifdef SRS_H265
srs_error_t on_ts_video_hevc(SrsTsMessage *msg, SrsBuffer *avs);
srs_error_t check_vps_sps_pps_change(SrsTsMessage *msg);
srs_error_t on_hevc_frame(SrsTsMessage *msg, std::vector<std::pair<char *, int>> &ipb_frames);
srs_error_t on_hevc_frame(SrsTsMessage *msg, std::vector< std::pair<char *, int> > &ipb_frames);
#endif
private:
ISrsStreamBridge* bridge_;

2
trunk/src/core/srs_core_version6.hpp
View file

@ -9,6 +9,6 @@
#define VERSION_MAJOR 6
#define VERSION_MINOR 0
#define VERSION_REVISION 111
#define VERSION_REVISION 112
#endif

2
trunk/src/kernel/srs_kernel_codec.hpp
View file

@ -778,7 +778,7 @@ struct SrsHevcRbspVps
uint32_t vps_max_latency_increase_plus1[8];
uint8_t vps_max_layer_id;
uint32_t vps_num_layer_sets_minus1;
std::vector<std::vector<uint8_t>> layer_id_included_flag;
std::vector< std::vector<uint8_t> > layer_id_included_flag;
uint8_t vps_timing_info_present_flag;
uint32_t vps_num_units_in_tick;
uint32_t vps_time_scale;