我正在尝试将视频分割成多张照片,但是当我使用AVAssetImageGenerator时,我只能获得0.0s,0.5s,0.1s等的照片
但我怎么能得到每秒10张照片?
let imageGenerator = AVAssetImageGenerator(asset: asset)
imageGenerator.appliesPreferredTrackTransform = true
var times = [NSValue]()
for i in 0..<5 {
let t = Double(i) / 5 * 60
times.append(NSValue(time: CMTimeMake(Int64(t), 60)))
}
imageGenerator.generateCGImagesAsynchronously(forTimes: times) { (time, imageRef, time2, result, error) in
产生的帧时间
time time2
0.0 0.0
0.2 0.0
0.4 0.5005
0.6 0.5005
0.8 1.001
答案 0 :(得分:0)
由
修复imageGenerator.requestedTimeToleranceAfter = CMTimeMake(1, 60)
imageGenerator.requestedTimeToleranceBefore = CMTimeMake(1, 60)