Turn on the large and small streams

• setSmallStreamParameter
• setRemoteDefaultVideoStreamType
• setRemoteVideoStreamType
• Notes

enableDualStream

• Brief description

Turn on the large and small streams

SDK supports sending multiple video streams simultaneously. Big and Small Streams: Since iOS mobile devices can only capture video from one camera, the local device will capture high-resolution video (the local video capture resolution must be no lower than 720p). This video will then be split into two streams: one high-quality stream, known as the “big stream,” and one low-quality stream, known as the “small stream.” Both streams will be published simultaneously. Due to the significant performance consumption, this feature should be enabled with caution.

• Interface name

- (int)enableDualStream:(BOOL)enable;

• Parameter

Parameter Name	Required	Type	Description
enable	Yes	BOOL	Enable/Disable

• Method Example

[_roomMgr enableDualStream:YES];

• Return Value Description

Type	Description
int	0: Indicates that the call was successful. Non-zero: Indicates that the call failed

setSmallStreamParameter

• Brief description

Set the video resolution for the small stream

• Interface name

- (int)setSmallStreamParameter:(TKVideoProfile *)profile;

• Parameter

Parameter Name	Required	Type	Description
profile	Yes	TKVideoProfile	The video resolution object, see the definition in TKRoomDefines.h

• Method Example

    TKVideoProfile *videoProfile = [TKVideoProfile new];
    videoProfile.width = 80;
    videoProfile.height = 60;
    videoProfile.maxfps = 10;
    [_roomMgr setSmallStreamParameter:videoProfile];

• Return Value Description

Type	Description
int	0: Indicates that the call was successful. Non-zero: Indicates that the call failed

setRemoteDefaultVideoStreamType

• Brief description

Set the default type of the remote video stream. If not set, it defaults to TKVideoStream_Big. This only takes effect if the remote user has enabled the dual-stream mode (big and small streams)

• Interface name

- (int)setRemoteDefaultVideoStreamType:(TKVideoStreamType)streamType;

• Parameter

Parameter Name	Required	Type	Description
streamType	Yes	TKVideoStreamType	Big and Small Stream Types

• Method Example

[_roomMgr setRemoteDefaultVideoStreamType:TKVideoStream_Big];

• Return Value Description

Type	Description
int	0: Indicates that the call was successful. Non-zero: Indicates that the call failed

setRemoteVideoStreamType

• Brief description

Switch the subscription to the big or small stream type of a specific video device of a remote user. This only takes effect if the remote user has enabled the dual-stream mode

• Interface name

- (int)setRemoteVideoStreamType:(TKVideoStreamType)streamType peerId:(NSString *)peerID deviceId:(NSString * _Nullable)deviceID;

• Parameter

Parameter Name	Required	Type	Description
streamType	Yes	TKVideoStreamType	Stream Type
peerID	Yes	NSString	User ID
deviceID	No	NSString	Camera Device ID

• Method Example

      [_roomMgr setRemoteVideoStreamType:TKVideoStream_Big
                                peerId:@"adc123456"
                              deviceId:nil];

• Return Value Description

Type	Description
int	0: Indicates that the call was successful. Non-zero: Indicates that the call failed

Notes

For more return error codes, please refer to the error code descriptions in TKRoomErrorCode