Instance Property

sourceVideoMinFrameDuration

A time describing the minimum frame duration of the video data.

Declaration

var sourceVideoMinFrameDuration: CMTime { get set }

Discussion

Setting this property allows the output settings assistant to make a more informed recommendation for the video settings that should be used. After setting this property, you should re-query the videoSettings property to get the new recommendation.

If the source of video data is an instance of AVAssetReaderOutput, you can discover the minimum frame duration of your source asset using the AVAssetTrack instance’s minFrameDuration property.

The default value is 1/30, which means that the output settings assistant is assuming that the source video has a maximum frame rate of 30fps.

See Also

Configuring Output Settings

var outputFileType: AVFileType

A UTI indicating the type of file to write.

var audioSettings: [String : Any]?

A dictionary containing the values to use when creating an asset writer input.

var sourceAudioFormat: CMAudioFormatDescription?

The format of the audio data when determining the audio settings to use.

var sourceVideoAverageFrameDuration: CMTime

A time describing the average frame duration of the video data.

var sourceVideoFormat: CMVideoFormatDescription?

A core media video format description object that defines the video format.

var videoSettings: [String : Any]?

A dictionary containing the values to use when creating an asset writer input.

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