导出带有自定义 CMTimeRange 问题的视频

Question

我想我漏掉了什么。我有一个滑块可以更改资产持续时间以及开始时间。如果我要导出完整时长的视频，如

 let timeRange = originalVideoTrack.timeRange
        do {
            try videoTrack.insertTimeRange(timeRange, ofTrack: originalVideoTrack, atTime: kCMTimeZero)
        } catch {

        }

一切正常。但是如果我尝试插入我的自定义持续时间，如

 let startTime = CMTimeMake(Int64(CMTimeGetSeconds(videoRangeSlider.timeRange.start) * 1000)   , 1000)
        let dura = CMTimeGetSeconds(videoRangeSlider.timeRange.end) - CMTimeGetSeconds(videoRangeSlider.timeRange.start)
let duration = CMTimeMake( Int64(dura * 1000)  , 1000)
t timeRange = CMTimeRangeMake(startTime,duration)
 originalVideoTrack.timeRange
        do {
                try videoTrack.insertTimeRange(timeRange, ofTrack: originalVideoTrack, atTime: timeRange.start)

        } catch {
            print("problem")
        }

我也把atTime改成了kCGTimeZero，不行

有什么建议吗？

更新

示例时间范围

CMTimeRange(start: __C.CMTime(value: 2216, timescale: 1000, flags: __C.CMTimeFlags(rawValue: 1), epoch: 0), duration: __C.CMTime(value: 2880, timescale: 1000, flags: __C.CMTimeFlags(rawValue: 1), epoch: 0))

Answer 1

已解决。享受

将完整的时间范围插入为

 let timeRange = originalVideoTrack.timeRange
        do {
            try videoTrack.insertTimeRange(timeRange, ofTrack: originalVideoTrack, atTime: kCMTimeZero)
        } catch {

        }

然后，对于您的 customRange，请执行以下操作

    exportSession?.timeRange = customRange

导出带有自定义 CMTimeRange 问题的视频

Export video with custom CMTimeRange issue

objective-c

swift

range

avasset

cmtime