SCCameraKitAVWriterOutput

Objective-C


@interface SCCameraKitAVWriterOutput : NSObject

Swift

class AVWriterOutput : NSObject

AVWriterOutput is a CameraKit provided wrapper for AVAssetWriter. You are still responsible for the configuration of the writer.

  • Date and time of first video buffer recorded (ie. start recording time)

    Declaration

    Objective-C

    @property (nonatomic, strong, readonly, nullable) NSDate *startDate;

    Swift

    var startDate: Date? { get }

  • Create an AVWriterOutput

    Declaration

    Objective-C

    - (nonnull instancetype)
    initWithAVAssetWriter:(nonnull AVAssetWriter *)assetWriter
         pixelBufferInput:
             (nonnull AVAssetWriterInputPixelBufferAdaptor *)pixelBufferInput
               audioInput:(nullable AVAssetWriterInput *)audioInput;

    Swift

    init(avAssetWriter assetWriter: AVAssetWriter, pixelBufferInput: AVAssetWriterInputPixelBufferAdaptor, audioInput: AVAssetWriterInput?)

    Parameters

    assetWriter

    the configured AVAssetWRiter
    pixelBufferInput

    the configured AVAssetWriterInputPixelBufferAdaptor to write video to.
    audioInput

    the configured AVAssetWriterInput to write audio to. May be nullable if the video does not contain audio. @note: audioInput is currently unused. This will change in a future build.

  • Unavailable

    Use designated init or convenience init to pass in required writer and inputs

    Declaration

    Objective-C

    + (nonnull instancetype)new;

  • Unavailable

    Undocumented

    Declaration

    Objective-C

    - (instancetype)init NS_UNAVAILABLE;

  • Call this after you start recording on the AVAssetWriter. This will indicate that the output should start recording data it receives from CameraKit.

    Note

    DO NOT call startSession on the asset writer, this output class will do so when it receives the first video frame. This is to ensure that there are no empty frames from the time the session is started and the first video buffer is written

    Declaration

    Objective-C

    - (void)startRecording;

    Swift

    func startRecording()

  • Call this before you stop recording on the AVAssetWriter. This will cause the output to stop recording data from CameraKit.

    Note

    DO NOT call endSession on the asset writer, this output class will do so with the timestamp of the last video frame This is to ensure that there are no empty frames from the time the last video buffer is written to the end of the session

    Declaration

    Objective-C

    - (void)stopRecording;

    Swift

    func stopRecording()