NextLevelSessionExporter 🔄

NextLevelSessionExporter 是一个用于 iOS 的导出和转码媒体库，使用 Swift 编写。

Build Status Pod Version Swift Version GitHub license

该库提供了可自定义的音频和视频编码选项，这与 AVAssetExportSession 不同，并且无需学习 AVFoundation 的复杂性。它是 SDAVAssetExportSession 的移植版本，并从 SCAssetExportSession 中汲取了灵感 – 它们都是很棒的 obj-c 替代方案。

需要不同版本的 Swift？

快速开始

# CocoaPods

pod "NextLevelSessionExporter", "~> 0.4.5"

# Carthage

github "nextlevel/NextLevelSessionExporter" ~> 0.4.5

# Swift PM

let package = Package(
    dependencies: [
        .Package(url: "https://github.com/nextlevel/NextLevelSessionExporter", majorVersion: 0)
    ]
)

或者，将 源文件 拖放到您的 Xcode 项目中。

示例

只需使用 AVAsset 扩展，或直接创建和使用 NextLevelSessionExporter 的实例。

let tmpURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
    .appendingPathComponent(ProcessInfo().globallyUniqueString)
    .appendingPathExtension("mp4")
exporter.outputURL = tmpURL

let compressionDict: [String: Any] = [
    AVVideoAverageBitRateKey: NSNumber(integerLiteral: 6000000),
    AVVideoProfileLevelKey: AVVideoProfileLevelH264HighAutoLevel as String,
]
let videoOutputConfig = [
    AVVideoCodecKey: AVVideoCodec.h264,
    AVVideoWidthKey: NSNumber(integerLiteral: 1920),
    AVVideoHeightKey: NSNumber(integerLiteral: 1080),
    AVVideoScalingModeKey: AVVideoScalingModeResizeAspectFill,
    AVVideoCompressionPropertiesKey: compressionDict
]
let audioOutputConfig = [
    AVFormatIDKey: kAudioFormatMPEG4AAC,
    AVEncoderBitRateKey: NSNumber(integerLiteral: 128000),
    AVNumberOfChannelsKey: NSNumber(integerLiteral: 2),
    AVSampleRateKey: NSNumber(value: Float(44100))
]

let asset = AVAsset(url: Bundle.main.url(forResource: "TestVideo", withExtension: "mov")!)
asset.nextlevel_export(outputURL: tmpURL, videoOutputConfiguration: videoOutputConfig, audioOutputConfiguration: audioOutputConfig)

或者，您可以直接使用 NextLevelSessionExporter。

let exporter = NextLevelSessionExporter(withAsset: asset)
exporter.outputFileType = AVFileType.mp4
let tmpURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
    .appendingPathComponent(ProcessInfo().globallyUniqueString)
    .appendingPathExtension("mp4")
exporter.outputURL = tmpURL

let compressionDict: [String: Any] = [
    AVVideoAverageBitRateKey: NSNumber(integerLiteral: 6000000),
    AVVideoProfileLevelKey: AVVideoProfileLevelH264HighAutoLevel as String,
]
exporter.videoOutputConfiguration = [
    AVVideoCodecKey: AVVideoCodec.h264,
    AVVideoWidthKey: NSNumber(integerLiteral: 1920),
    AVVideoHeightKey: NSNumber(integerLiteral: 1080),
    AVVideoScalingModeKey: AVVideoScalingModeResizeAspectFill,
    AVVideoCompressionPropertiesKey: compressionDict
]
exporter.audioOutputConfiguration = [
    AVFormatIDKey: kAudioFormatMPEG4AAC,
    AVEncoderBitRateKey: NSNumber(integerLiteral: 128000),
    AVNumberOfChannelsKey: NSNumber(integerLiteral: 2),
    AVSampleRateKey: NSNumber(value: Float(44100))
]

exporter.export(progressHandler: { (progress) in
    print(progress)
}, completionHandler: { result in
    switch result {
    case .success(let status):
        switch status {
        case .completed:
            print("NextLevelSessionExporter, export completed, \(exporter.outputURL?.description ?? "")")
            break
        default:
            print("NextLevelSessionExporter, did not complete")
            break
        }
        break
    case .failure(let error):
        print("NextLevelSessionExporter, failed to export \(error)")
        break
    }
})

文档

您可以在此处找到文档。文档使用 jazzy 生成，并托管在 GitHub-Pages 上。

社区

资源

许可

NextLevelSessionExporter 在 MIT 许可证下可用，有关更多信息，请参阅 LICENSE 文件。