iphone - 确定 MPMoviez Controller 比特率

Question

有没有办法确定 MPMovieController 正在播放的流的比特率？我在 iOS 上用 objective-c 编程

Answer 1

您可以从事件中获取指示的码率，这是根据m3u8 流的码率。为了计算实际比特率，我将 event.numberOfBytesTransferred/event.durationWatched 除以 8。

NSArray *events = self.player.accessLog.events;
    MPMovieAccessLogEvent *event = (MPMovieAccessLogEvent *)[events lastObject];
double calculatedBitRate = 8 * event.numberOfBytesTransferred / event.durationWatched;
    value = [nf stringFromNumber:[NSNumber numberWithDouble:calculatedBitRate]];
    self.calculatedBitRateLabel.text = [NSString stringWithFormat:@"My calculated bit rate = %@", value];