```
// 로컬 사용자의 스트림을 CDN에 게시
TRTCPublishTarget* target = [[TRTCPublishTarget alloc] init];
target.mode = TRTCPublishBigStreamToCdn;

TRTCPublishCdnUrl* cdnUrl = [[TRTCPublishCdnUrl alloc] init];
cdnUrl.rtmpUrl = @"rtmp://tencent/live/bestnews";
cdnUrl.isInternalLine = YES;

NSMutableArray* cdnUrlList = [NSMutableArray new];
[cdnUrlList addObject:cdnUrl];
target.cdnUrlList = cdnUrlList;

[_trtcCloud startPublishMediaStream:target encoderParam:nil mixingConfig:nil];
```


```
// 로컬 사용자의 스트림을 CDN에 게시
TRTCPublishTarget target;
target.mode = TRTCPublishMode::TRTCPublishBigStreamToCdn;

TRTCPublishCdnUrl* cdn_url_list = new TRTCPublishCdnUrl[1];
cdn_url_list[0].rtmpUrl = "rtmp://tencent/live/bestnews";
cdn_url_list[0].isInternalLine = true;

target.cdnUrlList = cdn_url_list;
target.cdnUrlListSize = 1;

trtc->startPublishMediaStream(&target, nullptr, nullptr);
delete[] cdn_url_list;
```


```
// 게시 모드를 TRTCPublishMixStreamToCdn으로 지정
TRTCPublishTarget* target = [[TRTCPublishTarget alloc] init];
target.mode = TRTCPublishMixStreamToCdn;

// 게시된 CDN 푸시 스트림 주소 지정
TRTCPublishCdnUrl* cdnUrl = [[TRTCPublishCdnUrl alloc] init];
cdnUrl.rtmpUrl = @"rtmp://tencent/live/bestnews";
cdnUrl.isInternalLine = YES;

NSMutableArray* cdnUrlList = [NSMutableArray new];
[cdnUrlList addObject:cdnUrl];
target.cdnUrlList = cdnUrlList;

// 믹싱된 오디오/비디오 스트림의 2차 인코딩 매개변수 설정
TRTCStreamEncoderParam* encoderParam = [[TRTCStreamEncoderParam alloc] init];
encoderParam.videoEncodedWidth = 1280;
encoderParam.videoEncodedHeight = 720;
encoderParam.videoEncodedFPS = 15;
encoderParam.videoEncodedGOP = 3;
encoderParam.videoEncodedKbps = 1000;
encoderParam.audioEncodedSampleRate = 48000;
encoderParam.audioEncodedChannelNum = 1;
encoderParam.audioEncodedKbps = 50;
encoderParam.audioEncodedCodecType = 0;

// 화면의 레이아웃 매개변수 설정
TRTCStreamMixingConfig* config = [[TRTCStreamMixingConfig alloc] init];
NSMutableArray* videoLayoutList = [NSMutableArray new];
TRTCVideoLayout* layout1 = [[TRTCVideoLayout alloc] init];
layout1.zOrder = 0;
layout1.rect = CGRectMake(0, 0, 720, 1280);
layout1.fixedVideoStreamType = TRTCVideoStreamTypeSub;
layout1.fixedVideoUser.intRoomId = 1234;
layout1.fixedVideoUser.userId = @"mike";  

TRTCVideoLayout* layout2 = [[TRTCVideoLayout alloc] init];
layout2.zOrder = 0;
layout2.rect = CGRectMake(1300, 0, 300, 200);
layout2.fixedVideoStreamType = TRTCVideoStreamTypeBig;
layout2.fixedVideoUser.intRoomId = 1234;
layout2.fixedVideoUser.userId = @"mike"; 

TRTCVideoLayout* layout3 = [[TRTCVideoLayout alloc] init];
layout3.zOrder = 0;
layout3.rect = CGRectMake(1300, 220, 300, 200);
layout3.fixedVideoStreamType = TRTCVideoStreamTypeSub;
layout3.fixedVideoUser = nil;

[videoLayoutList addObject:layout1];
[videoLayoutList addObject:layout2];
[videoLayoutList addObject:layout3];
config.videoLayoutList = videoLayoutList;
config.audioMixUserList = nil;

// 혼합 스트림 시작
[_trtcCloud startPublishMediaStream:target encoderParam:encoderParam mixingConfig:config];
```


```
// 게시 모드를 TRTCPublishMixStreamToCdn으로 지정
TRTCPublishTarget target;
target.mode = TRTCPublishMode::TRTCPublishMixStreamToCdn;

// 게시된 CDN 푸시 스트림 주소 지정
TRTCPublishCdnUrl* cdn_url = new TRTCPublishCdnUrl[1];
cdn_url[0].rtmpUrl = "rtmp://tencent/live/bestnews";
cdn_url[0].isInternalLine = true;
target.cdnUrlList = cdn_url;
target.cdnUrlListSize = 1;

// 믹싱된 오디오/비디오 스트림의 2차 인코딩 매개변수 설정
TRTCStreamEncoderParam encoder_param;
encoder_param.videoEncodedWidth = 1280;
encoder_param.videoEncodedHeight = 720;
encoder_param.videoEncodedFPS = 15;
encoder_param.videoEncodedGOP = 3;
encoder_param.videoEncodedKbps = 1000;
encoder_param.audioEncodedSampleRate = 48000;
encoder_param.audioEncodedChannelNum = 1;
encoder_param.audioEncodedKbps = 50;
encoder_param.audioEncodedCodecType = 0;

// 화면의 레이아웃 매개변수 설정
TRTCStreamMixingConfig config;
TRTCVideoLayout* video_layout_list = new TRTCVideoLayout[3];

TRTCUser* fixedVideoUser0 = new TRTCUser();
fixedVideoUser0->intRoomId = 1234;
fixedVideoUser0->userId = "mike"; 
video_layout_list[0].zOrder = 0;
video_layout_list[0].rect.left = 0;
video_layout_list[0].rect.top = 0;
video_layout_list[0].rect.right = 720;
video_layout_list[0].rect.bottom = 1280;
video_layout_list[0].fixedVideoStreamType =
      TRTCVideoStreamType::TRTCVideoStreamTypeSub;
video_layout_list[0].fixedVideoUser = fixedVideoUser0;  

TRTCUser* fixedVideoUser1 = new TRTCUser();
fixedVideoUser1->intRoomId = 1234;
fixedVideoUser1->userId = "mike"; 
video_layout_list[1].zOrder = 0;
video_layout_list[1].rect.left = 1300;
video_layout_list[1].rect.top = 0;
video_layout_list[1].rect.right = 300;
video_layout_list[1].rect.bottom = 200;
video_layout_list[1].fixedVideoStreamType =
      TRTCVideoStreamType::TRTCVideoStreamTypeBig;
video_layout_list[1].fixedVideoUser = fixedVideoUser1;

video_layout_list[2].zOrder = 0;
video_layout_list[2].rect.left = 1300;
video_layout_list[2].rect.top = 220;
video_layout_list[2].rect.right = 300;
video_layout_list[2].rect.bottom = 200;
video_layout_list[2].fixedVideoStreamType =
      TRTCVideoStreamType::TRTCVideoStreamTypeSub;
video_layout_list[2].fixedVideoUser = nullptr;

config.videoLayoutList = video_layout_list;
config.videoLayoutListSize = 3;
config.audioMixUserList = nullptr;

// 혼합 스트림 시작
trtc->startPublishMediaStream(&target, &encoder_param, &config);
delete fixedVideoUser0;
delete fixedVideoUser1;
delete[] video_layout_list;
```