FLiveTranscoding

旁路推流的转码属性。

C++

USTRUCT(BlueprintType)
struct FLiveTranscoding
{
GENERATED_BODY()
public:
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int width = 360;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int height = 640;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int videoBitrate = 400;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int videoFramerate = 15;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
bool lowLatency = false;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int videoGop = 30;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
EVIDEO_CODEC_PROFILE_TYPE videoCodecProfile = EVIDEO_CODEC_PROFILE_TYPE::VIDEO_CODEC_PROFILE_HIGH;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int64 backgroundColor = 0x000000;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
EVIDEO_CODEC_TYPE_FOR_STREAM videoCodecType = EVIDEO_CODEC_TYPE_FOR_STREAM::VIDEO_CODEC_H264_FOR_STREAM;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int userCount = 0;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
TArray<FTranscodingUser> transcodingUsers;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
FString transcodingExtraInfo = "";
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
FString metadata = "";
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
TArray <FRtcImage> watermark;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int watermarkCount = 0;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
TArray<FRtcImage> backgroundImage;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int backgroundImageCount = 0;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
EAUDIO_SAMPLE_RATE_TYPE audioSampleRate = EAUDIO_SAMPLE_RATE_TYPE::AUDIO_SAMPLE_RATE_48000;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int audioBitrate = 48;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int audioChannels = 1;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
EAUDIO_CODEC_PROFILE_TYPE audioCodecProfile = EAUDIO_CODEC_PROFILE_TYPE::AUDIO_CODEC_PROFILE_LC_AAC;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
TArray<FLiveStreamAdvancedFeature> advancedFeatures;
UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|LiveTranscoding")
int advancedFeatureCount = 0;
FLiveTranscoding(){}
FLiveTranscoding(const agora::rtc::LiveTranscoding & AgoraData){
width = AgoraData.width;
height = AgoraData.height;
videoBitrate = AgoraData.videoBitrate;
videoFramerate = AgoraData.videoFramerate;
lowLatency = AgoraData.lowLatency;
videoGop = AgoraData.videoGop;
videoCodecProfile = static_cast<EVIDEO_CODEC_PROFILE_TYPE>(AgoraData.videoCodecProfile);
backgroundColor = AgoraData.backgroundColor;
videoCodecType = static_cast<EVIDEO_CODEC_TYPE_FOR_STREAM>(AgoraData.videoCodecType);
userCount = AgoraData.userCount;
for(int i = 0; i< userCount; i++){
transcodingUsers.Add(FTranscodingUser((AgoraData.transcodingUsers[i])));
}
transcodingExtraInfo = UTF8_TO_TCHAR(AgoraData.transcodingExtraInfo);
metadata = UTF8_TO_TCHAR(AgoraData.metadata);
for(unsigned int i =0; i< AgoraData.watermarkCount;i++)
{
watermark.Add(FRtcImage(AgoraData.watermark[i]));
}
watermarkCount = AgoraData.watermarkCount;
for(unsigned int i =0; i< AgoraData.backgroundImageCount;i++){
backgroundImage.Add(FRtcImage(AgoraData.watermark[i]));
}
backgroundImageCount = AgoraData.backgroundImageCount;
audioSampleRate = static_cast<EAUDIO_SAMPLE_RATE_TYPE>(AgoraData.audioSampleRate);
audioBitrate = AgoraData.audioBitrate;
audioChannels = AgoraData.audioChannels;
audioCodecProfile = static_cast<EAUDIO_CODEC_PROFILE_TYPE>(AgoraData.audioCodecProfile);
for(unsigned int i = 0; i< AgoraData.advancedFeatureCount; i++){
advancedFeatures.Add(FLiveStreamAdvancedFeature(AgoraData.advancedFeatures[i]));
}
advancedFeatureCount = AgoraData.advancedFeatureCount;
}
agora::rtc::LiveTranscoding CreateAgoraData() const {
agora::rtc::LiveTranscoding AgoraData;
AgoraData.width = width;
AgoraData.height = height;
AgoraData.videoBitrate = videoBitrate;
AgoraData.videoFramerate = videoFramerate;
AgoraData.lowLatency = lowLatency;
AgoraData.videoGop = videoGop;
AgoraData.videoCodecProfile = static_cast<agora::rtc::VIDEO_CODEC_PROFILE_TYPE>(videoCodecProfile);
AgoraData.backgroundColor = static_cast<unsigned int>(backgroundColor);
AgoraData.videoCodecType = static_cast<agora::rtc::VIDEO_CODEC_TYPE_FOR_STREAM>(videoCodecType);
AgoraData.userCount = userCount;
SET_UABT_TARRARY_CUSTOMDATA_TO_AGORA_ARRAY___MEMALLOC(AgoraData.transcodingUsers, agora::rtc::TranscodingUser, userCount, this->transcodingUsers)
SET_UABT_FSTRING_TO_CONST_CHAR___MEMALLOC(AgoraData.transcodingExtraInfo,this->transcodingExtraInfo)
SET_UABT_FSTRING_TO_CONST_CHAR___MEMALLOC(AgoraData.metadata,this->metadata)
AgoraData.watermarkCount = watermarkCount;
SET_UABT_TARRARY_CUSTOMDATA_TO_AGORA_ARRAY___MEMALLOC(AgoraData.watermark, agora::rtc::RtcImage, watermarkCount, this->watermark)
AgoraData.backgroundImageCount = backgroundImageCount;
SET_UABT_TARRARY_CUSTOMDATA_TO_AGORA_ARRAY___MEMALLOC(AgoraData.backgroundImage, agora::rtc::RtcImage, backgroundImageCount, this->backgroundImage)
AgoraData.audioSampleRate = static_cast<agora::rtc::AUDIO_SAMPLE_RATE_TYPE>(audioSampleRate);
AgoraData.audioBitrate = audioBitrate;
AgoraData.audioChannels = audioChannels;
AgoraData.advancedFeatureCount = advancedFeatureCount;
SET_UABT_TARRARY_CUSTOMDATA_TO_AGORA_ARRAY___MEMALLOC(AgoraData.advancedFeatures,agora::rtc::LiveStreamAdvancedFeature, advancedFeatureCount,this->advancedFeatures)
return AgoraData;
}
void FreeAgoraData(agora::rtc::LiveTranscoding & AgoraData) const{
SET_UABT_TARRARY_CUSTOMDATA_TO_AGORA_ARRAY___MEMFREE(AgoraData.transcodingUsers,userCount, FTranscodingUser)
SET_UABT_FSTRING_TO_CONST_CHAR___MEMFREE(AgoraData.transcodingExtraInfo)
SET_UABT_TARRARY_CUSTOMDATA_TO_AGORA_ARRAY___MEMFREE(AgoraData.watermark, watermarkCount, FRtcImage)
SET_UABT_TARRARY_CUSTOMDATA_TO_AGORA_ARRAY___MEMFREE(AgoraData.backgroundImage, backgroundImageCount, FRtcImage)
SET_UABT_TARRARY_CUSTOMDATA_TO_AGORA_ARRAY___MEMFREE(AgoraData.advancedFeatures, advancedFeatureCount, FLiveStreamAdvancedFeature)
}
};

width

推流视频的总宽度，默认值 360，单位为像素。

• 如果推视频流，width 取值范围为 [64,1920]。如果取值低于 64，声网服务器会自动调整为 64； 如果取值高于 1920，声网服务器会自动调整为 1920。
• 如果推音频流，请将 width 和 height 设为 0。

height

推流视频的总高度，默认值 640，单位为像素。

• 如果推视频流，height 取值范围为 [64,1080]。如果取值低于 64，声网服务器会自动调整为 64； 如果取值高于 1080，声网服务器会自动调整为 1080。
• 如果推音频流，请将 width 和 height 设为 0。

videoBitrate

视频编码码率，单位为 Kbps。该参数无需设置，保留默认值 STANDARD_BITRATE 即可，SDK 会根据你设定的视频分辨率和帧率自动匹配最合适的码率。有关视频分辨率和帧率的对应关系，详见视频属性。

videoFrameRate

用于旁路直播的输出视频的帧率。取值范围是 (0,30]，单位为 fps。15 fps 为默认值。

注意

声网服务器会将高于 30 fps 的帧率统一调整为 30 fps。

lowLatency

废弃

不建议使用。

低延时模式

• true: 低延时，不保证画质。
• false:（默认值）高延时，保证画质。

videoGop

用于旁路直播的输出视频的 GOP (Group of Pictures)。单位为帧。默认值为 30。

videoCodecProfile

用于旁路直播的输出视频的编码规格。可以设置为 66、77 或 100，详见 EVIDEO_CODEC_PROFILE_TYPE。

注意

如果你把这个参数设为其他值，声网服务器会将其调整为默认值。

videoCodecType

用于旁路直播的输出视频的编解码类型。详见 EVIDEO_CODEC_TYPE_FOR_STREAM。

transcodingUsers

用于管理参与旁路直播的视频转码合图的用户。最多支持 17 人同时参与转码合图。详见 FTranscodingUser。

transcodingExtraInfo

预留参数：用户自定义的发送到旁路推流客户端的信息，用于填充 H264/H265 视频中 SEI 帧内容。长度限制：4096 字节。关于 SEI 的详细信息，详见 SEI 帧相关问题。

backgroundColor

用于旁路直播的输出视频的背景色，格式为 RGB 定义下的十六进制整数，不要带 # 号，如 0xFFB6C1 表示浅粉色。默认0x000000，黑色。

userCount

参与合图的用户数量，默认 0。取值范围为 [0,17]。

metadata

废弃

已废弃，不建议使用。

发送给 CDN 客户端的 metadata。

watermark

直播视频上的水印。图片格式需为 PNG。详见 FRtcImage。

你可以添加一个水印，或使用数组的方式添加多个水印。该参数与 watermarkCount搭配使用。

backgroundImage

直播视频上的背景图。图片格式需为 PNG。详见 FRtcImage。

你可以添加一张背景图，或使用数组的方式添加多张背景图。该参数与 backgroundImageCount 搭配使用。

audioSampleRate

用于旁路推流的输出媒体流的音频采样率 (Hz)，详见 EAUDIO_SAMPLE_RATE_TYPE。

audioBitrate

用于旁路直播的输出音频的码率。单位为 Kbps，默认值为 48，最大值为 128。

audioChannels

用于旁路直播的输出音频的声道数，默认值为 1。取值范围为 [1,5] 中的整型，建议取 1 或 2。3、4、5 需要特殊播放器支持：

• 1: （默认）单声道
• 2: 双声道
• 3: 三声道
• 4: 四声道
• 5: 五声道

audioCodecProfile

用于旁路直播输出音频的编码规格。详见 EAUDIO_CODEC_PROFILE_TYPE。

watermarkCount

直播视频上的水印的数量。水印和背景图的总数量需大于等于 0 且小于等于 10。该参数与 watermark 搭配使用。

backgroundImageCount

直播视频上的背景图的数量。水印和背景图的总数量需大于等于 0 且小于等于 10。该参数与 backgroundImage 搭配使用。

advancedFeatures

转码推流的高级功能。详见 FLiveStreamAdvancedFeature。

advancedFeatureCount

开启的高级功能数量。默认值为 0。