Copyright (c) 2021 Tencent. All rights reserved.
Module: V2TXLiveDef @ TXLiteAVSDK
Function: Key type definitions for Tencent Cloud LVB
StructType
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| Video encoding parameters |
| Video frame information |
| audio callback format |
| Pusher statistics |
| Player statistics |
| Position of each subimage in On-Cloud MixTranscoding |
| Configure On-Cloud MixTranscoding |
| Configure On-LocalRecording |
| Protocol configured with socks5 proxy. |
| Log configuration |
| Stream information supporting adaptive handover. |
EnumType
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| Supported protocol, RTMP is not supported on Windows or macOS. |
| Video resolution. |
| Video aspect ratio mode |
| Local camera mirror type. |
| Image fill mode |
| Clockwise rotation of the video image |
| Pixel format of video frames |
| Video data container format |
| Picture-in-Picture state |
| Audio quality |
| Audio callback data operation mode |
| Livestream connection status |
| Playback mode |
| Specify the type of streams to mix |
| Recording audio and video mode |
| Log level |
V2TXLiveMode
Supported protocol, RTMP is not supported on Windows or macOS.
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V2TXLiveMode_RTMP | Not Defined | RTMP protocol. |
V2TXLiveMode_RTC | Not Defined | TRTC protocol. |
V2TXLiveVideoResolution
Video resolution.
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V2TXLiveVideoResolution160x160 | Not Defined | Resolution: 160×160. Bitrate range: 100 Kbps to 150 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution270x270 | Not Defined | Resolution: 270×270. Bitrate range: 200 Kbps to 300 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution480x480 | Not Defined | Resolution: 480×480. Bitrate range: 350 Kbps to 525 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution320x240 | Not Defined | Resolution: 320×240. Bitrate range: 250 Kbps to 375 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution480x360 | Not Defined | Resolution: 480×360. Bitrate range: 400 Kbps to 600 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution640x480 | Not Defined | Resolution: 640×480. Bitrate range: 600 Kbps to 900 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution320x180 | Not Defined | Resolution: 320×180. Bitrate range: 250 Kbps to 400 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution480x270 | Not Defined | Resolution: 480×270. Bitrate range: 350 Kbps to 550 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution640x360 | Not Defined | Resolution: 640×360. Bitrate range: 500 Kbps to 900 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution960x540 | Not Defined | Resolution: 960×540. Bitrate range: 800 Kbps to 1500 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution1280x720 | Not Defined | Resolution: 1280×720. Bitrate range: 1000 Kbps to 1800 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolution1920x1080 | Not Defined | Resolution: 1920×1080. Bitrate range: 2500 Kbps to 3000 Kbps. Frame rate: 15 fps. |
V2TXLiveVideoResolutionMode
V2TXLiveVideoResolutionMode
Video aspect ratio mode
Note
Landscape resolution: V2TXLiveVideoResolution640x360 + V2TXLiveVideoResolutionModeLandscape = 640 × 360.
Portrait resolution: V2TXLiveVideoResolution640x360 + V2TXLiveVideoResolutionModePortrait = 360 × 640.
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V2TXLiveVideoResolutionModeLandscape | 0 | Landscape resolution. |
V2TXLiveVideoResolutionModePortrait | 1 | Portrait resolution. |
V2TXLiveMirrorType
Local camera mirror type.
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V2TXLiveMirrorTypeAuto | Not Defined | Default mirror type. Images from the front camera are mirrored, and images from the rear camera are not mirrored. |
V2TXLiveMirrorTypeEnable | Not Defined | Both the front and rear cameras are switched to the mirror mode. |
V2TXLiveMirrorTypeDisable | Not Defined | Both the front and rear cameras are switched to the non-mirror mode. |
V2TXLiveFillMode
Image fill mode
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V2TXLiveFillModeFill | Not Defined | The entire screen is covered by the image, without black edges. If the aspect ratio of the image is different from that of the screen, part of the image will be cropped. |
V2TXLiveFillModeFit | Not Defined | The image adapts to the screen and is not cropped. If the aspect ratio of the image is different from that of the screen, black edges will appear. |
V2TXLiveFillModeScaleFill | Not Defined | The screen is entirely covered by the image. The image will be stretched if screen and image have different aspect ratios. |
V2TXLiveRotation
Clockwise rotation of the video image
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V2TXLiveRotation0 | Not Defined | No rotation. |
V2TXLiveRotation90 | Not Defined | Rotate 90 degrees clockwise. |
V2TXLiveRotation180 | Not Defined | Rotate 180 degrees clockwise. |
V2TXLiveRotation270 | Not Defined | Rotate 270 degrees clockwise. |
V2TXLivePixelFormat
Pixel format of video frames
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V2TXLivePixelFormatUnknown | Not Defined | Unknown. |
V2TXLivePixelFormatI420 | Not Defined | YUV420P I420. |
V2TXLivePixelFormatNV12 | Not Defined | YUV420SP NV12. |
V2TXLivePixelFormatBGRA32 | Not Defined | BGRA8888. |
V2TXLivePixelFormatTexture2D | Not Defined | Texture2D. |
V2TXLiveBufferType
Video data container format
Note
In the custom capture and rendering features, you need to use the following enumerated values to specify the format for containing video data.
PixelBuffer: this is most efficient when used directly. The iOS system provides various APIs to obtain or process PixelBuffer.
NSData: when this is applied to custom rendering, PixelBuffer is copied once to NSData. When it is applied to custom capture, NSData is copied once to PixelBuffer. Therefore, the performance is affected to some extent.
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V2TXLiveBufferTypeUnknown | Not Defined | Unknown. |
V2TXLiveBufferTypePixelBuffer | Not Defined | This is most efficient when used directly. The iOS system provides various APIs to obtain or process PixelBuffer. |
V2TXLiveBufferTypeNSData | Not Defined | The performance is affected to some extent. As the SDK internally processes PixelBuffer directly, type switching between NSData and PixelBuffer results in memory copy overhead. |
V2TXLiveBufferTypeTexture | Not Defined | Texture. |
V2TXLivePictureInPictureState
V2TXLivePictureInPictureState
Picture-in-Picture state
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V2TXLivePictureInPictureStateUndefined | Not Defined | Undefined. |
V2TXLivePictureInPictureStateOccurError | Not Defined | An error occurred in Picture-in-Picture mode. |
V2TXLivePictureInPictureStateWillStart | Not Defined | Picture-in-Picture mode will start. |
V2TXLivePictureInPictureStateDidStart | Not Defined | Picture-in-Picture mode did start. |
V2TXLivePictureInPictureStateWillStop | Not Defined | Picture-in-Picture mode will stop. |
V2TXLivePictureInPictureStateDidStop | Not Defined | Picture-in-Picture mode did stop. |
V2TXLivePictureInPictureStateRestoreUI | Not Defined | Picture-in-Picture restore the user interface. |
V2TXLiveAudioQuality
Audio quality
|
V2TXLiveAudioQualitySpeech | Not Defined | Audio: 16k sample rate, mono-channel, 16 Kbps audio raw bitrate. This quality is suitable for scenarios that mainly involve voice calls, such as online meetings and voice calls. |
V2TXLiveAudioQualityDefault | Not Defined | General: 48k sample rate, mono-channel, 50 Kbps audio raw bitrate. This quality is the default audio quality of the SDK. We recommend that you choose this option unless you have special requirements. |
V2TXLiveAudioQualityMusic | Not Defined | Music: 48k sample rate, dual-channel + full-band, 128 Kbps audio raw bitrate. This quality is suitable for scenarios that require Hi-Fi music transmission, such as karaoke and music livestreams. |
V2TXLiveAudioFrameOperationMode
V2TXLiveAudioFrameOperationMode
Audio callback data operation mode
SDK provides two modes of operation for audio callback data.
Read-only mode (ReadOnly): Get audio data only from the callback.
ReadWrite mode (ReadWrite): You can get and modify the audio data of the callback.
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V2TXLiveAudioFrameOperationModeReadWrite | 0 | Read-write mode: You can get and modify the audio data of the callback, the default mode. |
V2TXLiveAudioFrameOperationModeReadOnly | 1 | Read-only mode: Get audio data from callback only. |
V2TXLivePushStatus
Livestream connection status
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V2TXLivePushStatusDisconnected | Not Defined | Disconnected from the server. |
V2TXLivePushStatusConnecting | Not Defined | Connecting to the server. |
V2TXLivePushStatusConnectSuccess | Not Defined | Connected to the server successfully. |
V2TXLivePushStatusReconnecting | Not Defined | Reconnecting to the server. |
V2TXAudioRoute
Playback mode
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V2TXAudioModeSpeakerphone | Not Defined | Speaker. |
V2TXAudioModeEarpiece | Not Defined | Earpiece. |
V2TXLiveMixInputType
Specify the type of streams to mix
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V2TXLiveMixInputTypeAudioVideo | Not Defined | Audio and video. |
V2TXLiveMixInputTypePureVideo | Not Defined | Video only. |
V2TXLiveMixInputTypePureAudio | Not Defined | Audio only. |
V2TXLiveRecordMode
Recording audio and video mode
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V2TXLiveRecordModeBoth | Not Defined | Both mode: Recording audio and video |
V2TXLiveLogLevel
Log level
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V2TXLiveLogLevelAll | 0 | Output all levels of log. |
V2TXLiveLogLevelDebug | 1 | Output DEBUG, INFO, WARNING, ERROR and FATAL level log. |
V2TXLiveLogLevelInfo | 2 | Output INFO, WARNING, ERROR and FATAL level log. |
V2TXLiveLogLevelWarning | 3 | Output WARNING, ERROR and FATAL level log. |
V2TXLiveLogLevelError | 4 | Output ERROR and FATAL level log. |
V2TXLiveLogLevelFatal | 5 | Only output FATAL level log. |
V2TXLiveLogLevelNULL | 6 | Does not output any sdk log. |
V2TXLiveVideoEncoderParam
V2TXLiveVideoEncoderParam
Video encoding parameters
These settings determine the quality of image viewed by remote users.
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minVideoBitrate | Field description: minimum video bitrate. The SDK will reduce the bitrate to as low as the value specified by minVideoBitrate to ensure the smoothness only if the network conditions are poor.
Recommended value: you can set the videoBitrate and minVideoBitrate parameters at the same time to restrict the SDK's adjustment range of the video bitrate:
If you set videoBitrate and minVideoBitrate to the same value, it is equivalent to disabling the adaptive adjustment capability of the SDK for the video bitrate. |
videoBitrate | Field description: target video bitrate. The SDK encodes streams at the target video bitrate and will actively reduce the bitrate only in weak network environments.
Recommended value: please see the optimal bitrate for each specification in V2TXLiveVideoResolution . You can also slightly increase the optimal bitrate.
For example, V2TXLiveVideoResolution1280x720 corresponds to the target bitrate of 1,200 Kbps. You can also set the bitrate to 1,500 Kbps for higher definition. Note you can set the videoBitrate and minVideoBitrate parameters at the same time to restrict the SDK's adjustment range of the video bitrate: If you set videoBitrate and minVideoBitrate to the same value, it is equivalent to disabling the adaptive adjustment capability of the SDK for the video bitrate. |
videoFps | Field description: video capturing frame rate.
Recommended value: 15 or 20 fps. If the frame rate is lower than 5 fps, there will be obvious lagging; if lower than 10 fps but higher than 5 fps, there will be slight lagging; if higher than 20 fps, the bandwidth will be wasted (the frame rate of movies is generally 24 fps).
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videoResolution | Field description: video resolution.
Recommended value:
For desktop platforms (Windows and macOS), we recommend you select a resolution of 640x360 or above and select Landscape (landscape resolution) for videoResolutionMode . Note to use a portrait resolution, please specify videoResolutionMode as Portrait ; for example, when used together with Portrait , 640x360 represents 360x640. |
videoResolutionMode | Field description: resolution mode (landscape/portrait).
Recommended value: for desktop platforms (Windows and macOS), Landscape is recommended.
Note to use a portrait resolution, please specify videoResolutionMode as Portrait ; for example, when used together with Portrait , 640x360 represents 360x640. |
V2TXLiveVideoFrame
Video frame information
Note
Used during custom capture and rendering. During custom capture, you need to use V2TXLiveVideoFrame to contain the video frame to be sent. During custom rendering, the video frame contained by V2TXLiveVideoFrame will be returned.
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bufferType | Field description: Video data container format.
Recommended value: V2TXLiveBufferTypePixelBuffer.
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data | Field description: Video data when bufferType is V2TXLiveBufferTypeNSData.
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height | Field description: Video height.
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pixelBuffer | Field description: Video data when bufferType is V2TXLiveBufferTypePixelBuffer.
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pixelFormat | Field description: Video pixel format.
Recommended value: V2TXLivePixelFormatNV12.
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rotation | Field description: Clockwise rotation angle of video frames.
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textureId | Field description: Texture ID.
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width | Field description: Video width.
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V2TXLiveAudioFrameObserverFormat
V2TXLiveAudioFrameObserverFormat
audio callback format
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channel | Field description: number of sound channels.
Recommended value: default value: 1, which means mono channel. Valid values: 1: mono channel; 2: dual channel.
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mode | Field description: audio callback data operation mode.
Recommended value: V2TXLiveAudioFrameOperationModeReadOnly, get audio data from callback only. The modes that can be set are V2TXLiveAudioFrameOperationModeReadOnly, V2TXLiveAudioFrameOperationModeReadWrite.
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sampleRate | Field description: sample rate.
Recommended value: default value: 48000 Hz. Valid values: 16000, 32000, 44100, 48000.
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samplesPerCall | Field description: number of sample points.
Recommended value: the value must be an integer multiple of sampleRate/100.
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V2TXLivePusherStatistics
Pusher statistics
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appCpu | Field description: CPU utilization of the current app (%).
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audioBitrate | Field description: Audio bitrate (Kbps).
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fps | Field description: Frame rate (fps).
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height | Field description: Video height.
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netSpeed | Field description: upload speed (Kbps).
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rtt | Field description: Round-trip delay (ms) from the SDK to cloud.
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systemCpu | Field description: CPU utilization of the current system (%).
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videoBitrate | Field description: Video bitrate (Kbps).
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width | Field description: Video width.
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V2TXLivePlayerStatistics
Player statistics
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appCpu | Field description: CPU utilization of the current app (%).
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audioBitrate | Field description: Audio bitrate (Kbps).
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audioBlockRate | Field description : Audio playback lag rate (%).
Audio playback lag rate (audioBlockRate) = cumulative audio playback lag duration (audioTotalBlockTime)/audio playback interval duration (2000ms). |
audioPacketLoss | Field description : Total packet loss rate (%) of the audio/video stream. Note: Only playback address prefixed with [trtc://] or [webrtc://] are supported.
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audioTotalBlockTime | Field description : Cumulative audio playback lag duration (ms).
The duration is the block duration within 2s. |
fps | Field description: Frame rate (fps).
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height | Field description: Video height.
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jitterBufferDelay | Field description : Playback delay (ms).
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netSpeed | Field description: donwload speed (Kbps).
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rtt | Field description: Round-trip delay (ms) from the SDK to cloud. Note: Only playback address prefixed with [trtc://] or [webrtc://] are supported.
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systemCpu | Field description: CPU utilization of the current system (%).
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videoBitrate | Field description: Video bitrate (Kbps).
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videoBlockRate | Field description : Video playback lag rate (%).
Video playback lag rate (videoBlockRate) = cumulative video playback lag duration (videoTotalBlockTime)/video playback interval duration (2000ms). |
videoPacketLoss | Field description : Total packet loss rate (%) of the audio/video stream. Note: Only playback address prefixed with [trtc://] or [webrtc://] are supported.
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videoTotalBlockTime | Field description : Cumulative video playback lag duration (ms).
The duration is the block duration within 2s. |
width | Field description: Video width.
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V2TXLiveMixStream
Position of each subimage in On-Cloud MixTranscoding
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height | Field description: height (absolute pixels) of the image layer.
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inputType | Field description: input type of the live stream.
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streamId | Field description: push streamId of users whose streams are mixed. nil indicates the current push streamId .
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userId | Field description: userId of users whose streams are mixed.
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width | Field description: width (absolute pixels) of the image layer.
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x | Field description: x-axis (absolute pixels) of the image layer.
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y | Field description: y-axis (absolute pixels) of the image layer.
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zOrder | Field description: layer number (1-15), which must be unique.
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V2TXLiveTranscodingConfig
V2TXLiveTranscodingConfig
Configure On-Cloud MixTranscoding
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audioBitrate | Field description: audio bitrate of the transcoded stream.
Value range: [32,192]; default value: 64 (Kbps).
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audioChannels | Field description: number of sound channels of the transcoded stream.
Valid values: 1 (default), 2.
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audioSampleRate | Field description: audio sample rate of the transcoded stream.
Valid values: 12000 Hz, 16000 Hz, 22050 Hz, 24000 Hz, 32000 Hz, 44100 Hz, 48000 Hz (default).
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backgroundColor | Field description: background color of the mixed video image. The default color is black, and the value is a hex number. For example: "0x61B9F1" represents the RGB color (97,158,241).
Default value: 0x000000 (black) |
backgroundImage | Field description: background image of the mixed video.
Default value: nil , which means that no background image is set. Note you need to first upload the image in Application Management > Function Configuration > Material Management in the console. You will get an image ID for the image uploaded, which you need to convert to a string and use it as the value of backgroundImage . For example, if the image ID is 63, you should set backgroundImage to 63 . |
mixStreams | Field description: position of each channel of subimage.
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outputStreamId | Field description: ID of the live stream pushed to CDN.
If you do not set this parameter, the SDK will execute the default logic, that is, it will mix multiple streams in the room into the video stream of the API caller, i.e., A + B => A. If you set this parameter, the SDK will mix multiple streams in the room into the live stream whose ID you have specified, i.e., A + B => C. Default value : nil , which indicates that multiple streams in the room are mixed into the video stream of the API caller.
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videoBitrate | Field description: bitrate (Kbps) for the resolution of the transcoded video.
Recommended value: if you set it to 0, the backend will calculate a bitrate based on videoWidth and videoHeight . You can also refer to the remarks for the enumerated value V2TXLiveVideoResolution .
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videoFramerate | Field description: frame rate (fps) for the resolution of the transcoded video.
Value range: (0,30]; default: 15.
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videoGOP | Field description: keyframe interval (GOP) for the resolution of the transcoded video.
Value range: [1,8]; default value: 2 (sec).
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videoHeight | Field description: height of transcoded video.
Recommended value: 640 px. If audio-only streams are mixed, the mixing result will carry a video stream that shows a canvas background. To avoid this, set both the width and height to 0 px.
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videoWidth | Field description: width of transcoded video.
Recommended value: 360 px. If audio-only streams are mixed, the mixing result will carry a video stream that shows a canvas background. To avoid this, set both the width and height to 0 px.
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V2TXLiveLocalRecordingParams
V2TXLiveLocalRecordingParams
Configure On-LocalRecording
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filePath | Field description: The path of the recorded file (required), please ensure that the path has read and write permissions and is legal, otherwise the recorded file cannot be generated.
Recommended value: "yourpath/record/test.mp4". The path needs to be accurate to the file name and format suffix. The format suffix is used to determine the recorded file format. The currently supported format is only MP4.
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interval | Field description: interval Recording information update frequency (optional), in milliseconds, valid range: 1000-10000.
Default value : -1 , which means no callback.
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recordMode | Field description: Media recording mode.
Default value : V2TXLiveRecordModeBoth , which means recording audio and video at the same time.
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V2TXLiveSocks5ProxyConfig
V2TXLiveSocks5ProxyConfig
Protocol configured with socks5 proxy.
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supportHttps | Field description: Indicates whether HTTPS is supported.
Recommended value: Default value: true.
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supportTcp | Field description: Indicates whether TCP is supported.
Recommended value: Default value: true.
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supportUdp | Field description: Indicates whether UDP is supported.
Recommended value: Default value: true.
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V2TXLiveLogConfig
Log configuration
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enableConsole | Field description: Whether to allow the SDK to print Log on the console of the editor (XCoder, Android Studio, Visual Studio, etc.).
Recommended value: Default value: NO.
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enableLogFile | Field description: Whether to enable local log file.
Special Instructions: If not for special needs, please do not close the local log file, otherwise the Tencent Cloud technical team will not be able to track and locate problems when they occur.
Recommended value: Default value: YES.
|
enableObserver | Field description: Whether to receive the log information to be printed through V2TXLivePremierObserver.
Special Instructions: If you want to implement Log writing by yourself, you can turn on this switch, Log information will be called back to you V2TXLivePremierObserver#onLog.
Recommended value: Default value: NO.
|
logLevel | Field description: Set Log level.
Recommended value: Default value: V2TXLiveLogLevelAll.
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logPath | Field description: Set the storage directory of the local log, default Log storage location:
iOS & Mac: sandbox Documents/log. |
V2TXLiveStreamInfo
Stream information supporting adaptive handover.
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bitrate | Field description: Bitrate in bps, default value: 0, means unknown.
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framerate | Field description: Framerate, default value: 0, means unknown.
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height | Field description: Video height, default value: 0, means unknown.
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url | Field description: Stream url.
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width | Field description: Video width, default value: 0, means unknown.
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