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metaRTC H265 HEVC Programming Guide

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yangrtc edited this page Jan 5, 2026 · 1 revision

Parameter settings

typedef enum YangVideoCodec{
	Yang_VED_H264,
	Yang_VED_H265,
	Yang_VED_AV1,
	Yang_VED_VP8,
	Yang_VED_VP9,
	Yang_VED_MJPEG
}YangVideoCodec;

YangAVInfo avinfo;
avinfo.video.videoEncoderType=Yang_VED_H265;

Or the configuration file yang_config.ini

[video]
videoEncoderType=1

SDP

m=video 9 UDP/TLS/RTP/SAVPF 49
c=IN IP4 0.0.0.0
a=ice-ufrag:192252g
a=ice-pwd:8q31k7bexd60295om1120s83976lniiv
a=ice-options:trickle
a=fingerprint:sha-256 C5:7B:2C:5F:91:AF:4A:5D:A4:84:AB:36:37:4F:7C:9A:12:80:BE:73:05:3E:B8:76:4D:A1:5A:41:6C:40:7D:11
a=setup:passive
a=mid:1
a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
a=sendonly
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:49 H265/90000
a=rtcp-fb:49 transport-cc
a=rtcp-fb:49 nack
a=rtcp-fb:49 nack pli
a=fmtp:49 level-id=93;profile-id=1;tier-flag=0;tx-mode=SRST

H265 Parameter:a=fmtp:49 level-id=93;profile-id=1;tier-flag=0;tx-mode=SRST

profile-id

1 Main Profile(MP) Mainstream application universal video
2 Main 10 Profile 10-bit 4:2:0,supports HDR 4K/HDR content
3 Main Still Picture Still images photos
4 Range Extensions Extended range supports 4:2:2 and 4:4:4 professional production

tier-flag

0：Main Tier
1：High Tier

Level 4.1:

  • Main Tier: Maximum bitrate 20 Mbps
  • High Tier: Maximum bitrate 50 Mbps

Level 5.1:

  • Main Tier: Maximum bitrate 100 Mbps
  • High Tier: Maximum bitrate 250 Mbps

level-id

Level 1 30
Level 2 60
Level 2.1 63
Level 3 90
Level 3.1 93
Level 4 120
Level 4.1 123
Level 5 150
Level 5.1 153
Level 5.2 156
Level 6 180
Level 6.1 183
Level 6.2 186

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