将大视频文件路径转换为NSData时出现内存问题。如何使用InputStream/FileHandle解决此问题？

guard let videoURL = URL(string: "视频文件路径") else {
    // 处理URL无效的情况
    return
}

guard let inputStream = InputStream(url: videoURL) else {
    // 处理InputStream创建失败的情况
    return
}

inputStream.open()

let bufferSize = 1024
let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
var data = NSMutableData()

while inputStream.hasBytesAvailable {
    let bytesRead = inputStream.read(buffer, maxLength: bufferSize)
    if bytesRead < 0 {
        // 处理读取错误的情况
        break
    }
    data.append(buffer, length: bytesRead)
}

inputStream.close()
buffer.deallocate()

// 使用data进行后续操作

guard let videoURL = URL(string: "视频文件路径") else {
    // 处理URL无效的情况
    return
}

do {
    let fileHandle = try FileHandle(forReadingFrom: videoURL)
    
    let data = fileHandle.readDataToEndOfFile()
    
    fileHandle.closeFile()
    
    // 使用data进行后续操作
} catch {
    // 处理FileHandle创建或读取错误的情况
}