AVPlayer 在 NSDate 寻找播放器

Question

我有 hh:mm:ss 格式的文本为“00:01:30”的字符串。我想把这个时间作为我的视频播放器的搜索时间。意味着在排序中我想从 hh:mm:ss 的字符串值设置 'seekToTime'。我在 NSDate formate 中转换它，但无法使用它来查看时间。请建议。谢谢。

Answer 1

self.audioPlayer.timeFormat(self.audioPlayer.getCurrentAudioTime()))


   func getCurrentAudioTime(){ 
   let dur = CMTimeGetSeconds(audioPlayer.currentTime())
    let cmValue = NSTimeInterval(dur)
    let newTime = CMTimeMakeWithSeconds(value, 1)
    self.audioPlayer.seekToTime(newTime)

}

  func timeFormat(value:Double) -> NSString
   {
    let someFloat = Float(value)
    let floatvalue = lroundf(someFloat)
    let floorvalue = Double(floatvalue)

    let minutes = floor(floorvalue / 60)
    let seconds = floorvalue - (minutes * 60)

    let roundsec = Float(seconds)
    let roundmin = Float(minutes)

    let roundedSeconds = lroundf(roundsec)
    let roundedMinutes = lroundf(roundmin)

    var time : NSString!
    time = NSString.init(format:"%d:%02d", roundedMinutes,roundedSeconds)
    return time;
   }

Answer 2

如果将字符串转换为CMTime格式，然后分配寻道时间，代码如下，

let fileURL: NSURL = NSURL(string: timeString)!
let asset = AVURLAsset(URL: fileURL, options: nil)
let audioDuration = asset.duration
let newTime:CMTime = CMTimeGetSeconds(audioDuration)
playerVal.seekToTime(newTime)

希望对您有所帮助

Answer 3

您可以使用下面的代码将字符串转换为 CMTime，

func seekTime(timeString:String) -> CMTime? {
    let dateFormatter = NSDateFormatter.init()
    dateFormatter.dateFormat = "HH:mm:ss"
    if let startDate = dateFormatter.dateFromString("00:00:00") {
        if let neededDate = dateFormatter.dateFromString(timeString) {
            let interval = neededDate.timeIntervalSinceDate(startDate)
            return CMTime.init(value: CMTimeValue(interval), timescale: 1)
        }
    }
    return nil;
}

AVPlayer 在 NSDate 寻找播放器

AVPlayer seek player at NSDate

objective-c

avfoundation

ios

avplayer

xcode7.3