38 lines
1.1 KiB
Swift
38 lines
1.1 KiB
Swift
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//
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// AVCaptureVideoDataOutput+recommendedVideoSettings.swift
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// VisionCamera
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//
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// Created by Marc Rousavy on 22.11.23.
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// Copyright © 2023 mrousavy. All rights reserved.
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//
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import AVFoundation
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import Foundation
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extension AVCaptureVideoDataOutput {
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/**
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Get the recommended options for an [AVAssetWriter] with the desired [RecordVideoOptions].
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*/
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func recommendedVideoSettings(forOptions options: RecordVideoOptions) throws -> [String: Any] {
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let settings: [String: Any]?
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if let videoCodec = options.codec {
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settings = recommendedVideoSettings(forVideoCodecType: videoCodec, assetWriterOutputFileType: options.fileType)
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} else {
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settings = recommendedVideoSettingsForAssetWriter(writingTo: options.fileType)
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}
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guard var settings else {
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throw CameraError.capture(.createRecorderError(message: "Failed to get video settings!"))
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}
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if let bitRate = options.bitRate {
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// Convert from Mbps -> bps
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let bitsPerSecond = bitRate * 1_000_000
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settings[AVVideoCompressionPropertiesKey] = [
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AVVideoAverageBitRateKey: NSNumber(value: bitsPerSecond),
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]
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}
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return settings
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}
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}
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