Question

我正在尝试使用有意在LAN环境中工作的directshow编写UDP流应用程序。事情证明是好的，直到客户在寻求时开始遇到冻结问题。

这是我做的：

服务器

enter image description here

客户端

enter image description here

在服务器端，我有两个转换滤波器，一个用于视频，一个用于音频。在这两个过滤器中，每个过滤器都创建一个线程，该线程读取MediaSamples并执行多播而不修改时间戳/标志。同时，视频变换滤波器简单地将媒体样本传递给解码器。音频变换滤镜也会这样做。

在客户端。实时源过滤器只是从UDP端口读取视频和音频媒体样本。在这里，我执行一些简单的时间戳计算：

MediaSample开始时间=当前流时间+ 40毫秒

视频会在局域网环境中流传输。但是，当我进行搜索时，我发现客户端会冻结片刻。当我检查渲染器时，它将显示丢弃的大量帧。我猜测时间戳导致帧丢失。

我也注意到每当执行搜索时，初始帧通常都有负标记。如果我不将这些帧发送到客户端，客户端将不会冻结。但有些框架会破碎。我猜这是因为这些负面框架是导致寻找位置的KeyFrames。如果它们丢失了，图像就会被破坏。

在做了一些研究之后，我尝试了这种方法：

将第一个样本的时间戳设置为当前流时间。

T1 =流时间。
使用此第一个样本的时间戳作为基线。

Base = T1
之后的每个样本都计算为

Tn =流时间+ Tn - 基础

哪个也行不通。我猜这是因为服务器和客户端的时钟不同步。但是，我认为它可能会起作用，因为在服务器端的每次搜索之后，时间戳再次从0开始。

我想弄清楚接下来要做什么。如果有人能给我一些建议，我将非常感激。

2013-07-26更新

http://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/c1c762a0-af92-4987-b084-f0d194766999/is-a-video-sample-with-negative-timestamp-a-preroll-sample

客户通过检查 IMediaSample :: IsDiscontinuity
如果发生不连续，请将基线（B）设置为收到的时间戳
然后每个时间戳计算为

TS - 收到的时间戳TC - 计算的时间戳
  TC = Current Stream Time + TS - B + 40ms

我使用 CRefTime 和 StreamTime（）

在进行上述更改后，当我开始流式传输时，客户端的视频移动速度非常慢，并最终冻结。在我停止服务器发送数据后，客户端的屏幕再次激活大约半秒钟。

我在这里做错了什么？它是关于时钟频率的吗？

2013-08-01更新

根据Roman的建议，我能够通过在SourceFilter之后添加一个直通过滤器来查找时间戳中的错误，这可以让我检查来自SourceFilter视频输出引脚的时间戳。

但是，现在我在寻找时遇到了另一个问题。在客户端，即使所有帧都正确显示，它也会在开始更新新帧之前遭受巨大延迟。

我检查了这些帧，它们是预卷帧，通向我寻找位置的帧。我通过在媒体样本中将preroll标志设置为false并让它播放来确认它。似乎图表在客户端以正常速率处理这些预卷帧，但在服务器端，这些预卷帧处理得更快。

有没有办法解决这个延迟，或者这只是我必须处理的事情？

这些是我在传递过滤器中捕获的样本。

服务器

6848 : GetState 2
31772 : 11210a90 BeginFlush
31784 : 11210a90 EndFlush
31784 : NewSegment: 38700000..300900000 at 1x
31814 : GetState 1
31814 : GetState 1
31814 : GetState 1
31815 : GetState 1
31815 : GetState 1
31816 : 11210a90 Sample 4515 bytesD time -3870.0 to -3837.0 latency 0.0 <-- Preroll Starts
31828 : 11210a90 Sample 62335 bytes time -3837.0 to -3804.0 latency 0.0
31834 : GetState 1
31843 : 11210a90 Sample 51483 bytes time -3804.0 to -3770.0 latency 0.0
31844 : GetState 1
31856 : 11210a90 Sample 62535 bytes time -3770.0 to -3737.0 latency 0.0
31864 : GetState 1
31869 : 11210a90 Sample 62041 bytes time -3737.0 to -3704.0 latency 0.0
31874 : GetState 1
31885 : 11210a90 Sample 61509 bytes time -3704.0 to -3670.0 latency 0.0
31888 : GetState 1
31900 : 11210a90 Sample 62280 bytes time -3670.0 to -3637.0 latency 0.0
31906 : GetState 1
31912 : 11210a90 Sample 63084 bytes time -3637.0 to -3604.0 latency 0.0
31926 : GetState 1
31929 : 11210a90 Sample 62388 bytes time -3604.0 to -3570.0 latency 0.0
31936 : GetState 1
31941 : 11210a90 Sample 61956 bytes time -3570.0 to -3537.0 latency 0.0
31951 : GetState 1
31956 : 11210a90 Sample 52196 bytes time -3537.0 to -3503.0 latency 0.0
31967 : GetState 1
31968 : 11210a90 Sample 53707 bytes time -3503.0 to -3470.0 latency 0.0
31980 : 11210a90 Sample 55162 bytes time -3470.0 to -3437.0 latency 0.0
31982 : GetState 1
31991 : 11210a90 Sample 54511 bytes time -3437.0 to -3403.0 latency 0.0
31998 : GetState 1
32002 : 11210a90 Sample 53676 bytes time -3403.0 to -3370.0 latency 0.0
32013 : 11210a90 Sample 54214 bytes time -3370.0 to -3337.0 latency 0.0
32016 : GetState 1
32031 : 11210a90 Sample 53590 bytes time -3337.0 to -3303.0 latency 0.0
32036 : GetState 1
32042 : 11210a90 Sample 54067 bytes time -3303.0 to -3270.0 latency 0.0
32046 : GetState 1
32055 : 11210a90 Sample 55115 bytes time -3270.0 to -3237.0 latency 0.0
32066 : GetState 1
32067 : 11210a90 Sample 56462 bytes time -3237.0 to -3203.0 latency 0.0
32076 : GetState 1
32079 : 11210a90 Sample 45412 bytes time -3203.0 to -3170.0 latency 0.0
32090 : 11210a90 Sample 49165 bytes time -3170.0 to -3136.0 latency 0.0
32096 : GetState 1
32102 : 11210a90 Sample 47378 bytes time -3136.0 to -3103.0 latency 0.0
32113 : 11210a90 Sample 47024 bytes time -3103.0 to -3070.0 latency 0.0
32116 : GetState 1
32123 : GetState 1
32127 : 11210a90 Sample 46739 bytes time -3070.0 to -3036.0 latency 0.0
32138 : GetState 1
32141 : 11210a90 Sample 45601 bytes time -3036.0 to -3003.0 latency 0.0
32152 : 11210a90 Sample 45939 bytes time -3003.0 to -2970.0 latency 0.0
32154 : GetState 1
32163 : 11210a90 Sample 47212 bytes time -2970.0 to -2936.0 latency 0.0
32170 : GetState 1
32180 : 11210a90 Sample 44130 bytes time -2936.0 to -2903.0 latency 0.0
32190 : GetState 1
32190 : 11210a90 Sample 43858 bytes time -2903.0 to -2869.0 latency 0.0
32200 : GetState 1
32201 : 11210a90 Sample 44417 bytes time -2869.0 to -2836.0 latency 0.0
32211 : 11210a90 Sample 44330 bytes time -2836.0 to -2803.0 latency 0.0
32217 : GetState 1
32224 : 11210a90 Sample 44660 bytes time -2803.0 to -2769.0 latency 0.0
32236 : 11210a90 Sample 43832 bytes time -2769.0 to -2736.0 latency 0.0
32237 : GetState 1
32247 : GetState 1
32248 : 11210a90 Sample 43512 bytes time -2736.0 to -2703.0 latency 0.0
32260 : 11210a90 Sample 43342 bytes time -2703.0 to -2669.0 latency 0.0
32267 : GetState 1
32272 : 11210a90 Sample 43589 bytes time -2669.0 to -2636.0 latency 0.0
32286 : 11210a90 Sample 42888 bytes time -2636.0 to -2603.0 latency 0.0
32287 : GetState 1
32297 : GetState 1
32297 : 11210a90 Sample 44217 bytes time -2603.0 to -2569.0 latency 0.0
32308 : 11210a90 Sample 46987 bytes time -2569.0 to -2536.0 latency 0.0
32311 : GetState 1
32321 : 11210a90 Sample 45233 bytes time -2536.0 to -2502.0 latency 0.0
32331 : GetState 1
32332 : 11210a90 Sample 46052 bytes time -2502.0 to -2469.0 latency 0.0
32343 : GetState 1
32343 : 11210a90 Sample 45819 bytes time -2469.0 to -2436.0 latency 0.0
32357 : 11210a90 Sample 46946 bytes time -2436.0 to -2402.0 latency 0.0
32363 : GetState 1
32371 : 11210a90 Sample 44469 bytes time -2402.0 to -2369.0 latency 0.0
32373 : GetState 1
32387 : 11210a90 Sample 44398 bytes time -2369.0 to -2336.0 latency 0.0
32393 : GetState 1
32401 : 11210a90 Sample 45456 bytes time -2336.0 to -2302.0 latency 0.0
32403 : GetState 1
32412 : 11210a90 Sample 46051 bytes time -2302.0 to -2269.0 latency 0.0
32423 : GetState 1
32425 : 11210a90 Sample 38146 bytes time -2269.0 to -2236.0 latency 0.0
32436 : 11210a90 Sample 38028 bytes time -2236.0 to -2202.0 latency 0.0
32443 : GetState 1
32446 : 11210a90 Sample 39705 bytes time -2202.0 to -2169.0 latency 0.0
32455 : GetState 1
32460 : 11210a90 Sample 36533 bytes time -2169.0 to -2135.0 latency 0.0
32468 : GetState 1
32472 : 11210a90 Sample 37019 bytes time -2135.0 to -2102.0 latency 0.0
32483 : 11210a90 Sample 37277 bytes time -2102.0 to -2069.0 latency 0.0
32488 : GetState 1
32494 : 11210a90 Sample 36698 bytes time -2069.0 to -2035.0 latency 0.0
32498 : GetState 1
32506 : 11210a90 Sample 36436 bytes time -2035.0 to -2002.0 latency 0.0
32516 : GetState 1
32516 : 11210a90 Sample 37650 bytes time -2002.0 to -1969.0 latency 0.0
32528 : 11210a90 Sample 38623 bytes time -1969.0 to -1935.0 latency 0.0
32536 : GetState 1
32538 : 11210a90 Sample 38525 bytes time -1935.0 to -1902.0 latency 0.0
32546 : GetState 1
32549 : 11210a90 Sample 38196 bytes time -1902.0 to -1868.0 latency 0.0
32559 : 11210a90 Sample 38130 bytes time -1868.0 to -1835.0 latency 0.0
32564 : GetState 1
32575 : 11210a90 Sample 39116 bytes time -1835.0 to -1802.0 latency 0.0
32583 : GetState 1
32587 : 11210a90 Sample 45008 bytes time -1802.0 to -1768.0 latency 0.0
32593 : GetState 1
32599 : 11210a90 Sample 40588 bytes time -1768.0 to -1735.0 latency 0.0
32610 : 11210a90 Sample 40633 bytes time -1735.0 to -1702.0 latency 0.0
32613 : GetState 1
32621 : 11210a90 Sample 41867 bytes time -1702.0 to -1668.0 latency 0.0
32623 : GetState 1
32633 : 11210a90 Sample 40974 bytes time -1668.0 to -1635.0 latency 0.0
32643 : GetState 1
32643 : 11210a90 Sample 41854 bytes time -1635.0 to -1602.0 latency 0.0
32653 : GetState 1
32654 : 11210a90 Sample 42312 bytes time -1602.0 to -1568.0 latency 0.0
32665 : 11210a90 Sample 42155 bytes time -1568.0 to -1535.0 latency 0.0
32668 : GetState 1
32681 : 11210a90 Sample 41618 bytes time -1535.0 to -1501.0 latency 0.0
32688 : GetState 1
32696 : 11210a90 Sample 41394 bytes time -1501.0 to -1468.0 latency 0.0
32703 : GetState 1
32715 : GetState 1
32719 : 11210a90 Sample 41221 bytes time -1468.0 to -1435.0 latency 0.0
32731 : 11210a90 Sample 41515 bytes time -1435.0 to -1401.0 latency 0.0
32735 : GetState 1
32742 : 11210a90 Sample 41570 bytes time -1401.0 to -1368.0 latency 0.0
32748 : GetState 1
32752 : 11210a90 Sample 43045 bytes time -1368.0 to -1335.0 latency 0.0
32762 : GetState 1
32765 : 11210a90 Sample 42187 bytes time -1335.0 to -1301.0 latency 0.0
32778 : GetState 1
32780 : 11210a90 Sample 41181 bytes time -1301.0 to -1268.0 latency 0.0
32791 : 11210a90 Sample 41675 bytes time -1268.0 to -1235.0 latency 0.0
32793 : GetState 1
32804 : 11210a90 Sample 42541 bytes time -1235.0 to -1201.0 latency 0.0
32813 : GetState 1
32818 : 11210a90 Sample 41916 bytes time -1201.0 to -1168.0 latency 0.0
32827 : GetState 1
32833 : 11210a90 Sample 40903 bytes time -1168.0 to -1134.0 latency 0.0
32843 : 11210a90 Sample 41798 bytes time -1134.0 to -1101.0 latency 0.0
32846 : GetState 1
32855 : 11210a90 Sample 41537 bytes time -1101.0 to -1068.0 latency 0.0
32860 : GetState 1
32866 : 11210a90 Sample 40623 bytes time -1068.0 to -1034.0 latency 0.0
32877 : GetState 1
32880 : 11210a90 Sample 40275 bytes time -1034.0 to -1001.0 latency 0.0
32889 : GetState 1
32890 : 11210a90 Sample 37519 bytes time -1001.0 to -968.0 latency 0.0
32901 : 11210a90 Sample 37575 bytes time -968.0 to -934.0 latency 0.0
32903 : GetState 1
32912 : 11210a90 Sample 38719 bytes time -934.0 to -901.0 latency 0.0
32920 : GetState 1
32928 : 11210a90 Sample 36653 bytes time -901.0 to -867.0 latency 0.0
32934 : GetState 1
32940 : 11210a90 Sample 36593 bytes time -867.0 to -834.0 latency 0.0
32951 : 11210a90 Sample 35818 bytes time -834.0 to -801.0 latency 0.0
32954 : GetState 1
32960 : 11210a90 Sample 36516 bytes time -801.0 to -767.0 latency 0.0
32966 : GetState 1
32974 : 11210a90 Sample 35436 bytes time -767.0 to -734.0 latency 0.0
32986 : 11210a90 Sample 36906 bytes time -734.0 to -701.0 latency 0.0
32986 : GetState 1
32996 : 11210a90 Sample 37786 bytes time -701.0 to -667.0 latency 0.0
32998 : GetState 1
33008 : 11210a90 Sample 36125 bytes time -667.0 to -634.0 latency 0.0
33012 : GetState 1
33019 : 11210a90 Sample 36410 bytes time -634.0 to -601.0 latency 0.0
33027 : GetState 1
33034 : 11210a90 Sample 36077 bytes time -601.0 to -567.0 latency 0.0
33045 : 11210a90 Sample 37942 bytes time -567.0 to -534.0 latency 0.0
33047 : GetState 1
33060 : 11210a90 Sample 36691 bytes time -534.0 to -500.0 latency 0.0
33066 : GetState 1
33071 : 11210a90 Sample 36991 bytes time -500.0 to -467.0 latency 0.0
33075 : GetState 1
33082 : 11210a90 Sample 37085 bytes time -467.0 to -434.0 latency 0.0
33091 : GetState 1
33092 : 11210a90 Sample 36362 bytes time -434.0 to -400.0 latency 0.0
33103 : 11210a90 Sample 36669 bytes time -400.0 to -367.0 latency 0.0
33109 : GetState 1
33112 : 11210a90 Sample 36624 bytes time -367.0 to -334.0 latency 0.0
33126 : 11210a90 Sample 38299 bytes time -334.0 to -300.0 latency 0.0
33129 : GetState 1
33139 : GetState 1
33140 : 11210a90 Sample 37931 bytes time -300.0 to -267.0 latency 0.0
33152 : GetState 1
33153 : 11210a90 Sample 38297 bytes time -267.0 to -234.0 latency 0.0
33163 : 11210a90 Sample 38490 bytes time -234.0 to -200.0 latency 0.0
33172 : GetState 1
33176 : 11210a90 Sample 40219 bytes time -200.0 to -167.0 latency 0.0
33184 : GetState 1
33188 : 11210a90 Sample 45656 bytes time -167.0 to -133.0 latency 0.0
33199 : 11210a90 Sample 44289 bytes time -133.0 to -100.0 latency 0.0
33204 : GetState 1
33210 : 11210a90 Sample 39973 bytes time -100.0 to -67.0 latency 0.0
33216 : GetState 1
33222 : 11210a90 Sample 38835 bytes time -67.0 to -33.0 latency 0.0
33230 : GetState 1
33234 : 11210a90 Sample 43513 bytes time -33.0 to 0.0 latency 0.0
33246 : 11210a90 Sample 39879 bytes time 0.0 to 1.0 latency 0.0 <-- Preroll ends
33250 : GetState 1
33262 : GetState 1
33262 : 11210a90 Run STO 23440168ms ST 0ms
33262 : 11210a90 Sample 40240 bytes time 33.0 to 34.0 latency 33.0
33302 : 11210a90 Sample 40200 bytes time 67.0 to 68.0 latency 42.204
33337 : 11210a90 Sample 40430 bytes time 100.0 to 101.0 latency 41.204
33464 : 11210a90 Sample 40407 bytes time 134.0 to 135.0 latency 37.8390
33497 : 11210a90 Sample 43949 bytes time 167.0 to 168.0 latency 36.8390
33531 : 11210a90 Sample 40345 bytes time 200.0 to 201.0 latency 35.8390
33559 : 11210a90 Sample 40497 bytes time 234.0 to 235.0 latency 41.6530
33600 : 11210a90 Sample 40504 bytes time 267.0 to 268.0 latency 33.7936
33626 : 11210a90 Sample 114853 bytes time 300.0 to 301.0 latency 40.7936
33658 : 11210a90 Sample 20719 bytes time 334.0 to 335.0 latency 42.7936

客户端

31372 : GetState 2
32794 : f622d30 Sample 4515 bytesD time 30199.0 to 30232.0 latency -52.0 <---Discontinuity
32809 : f622d30 Sample 62335 bytes time 30232.0 to 30265.0 latency -34.0
32843 : f622d30 Sample 51483 bytes time 30265.0 to 30299.0 latency -35.0
32869 : f622d30 Sample 62535 bytes time 30299.0 to 30332.0 latency -27.0
32898 : f622d30 Sample 62041 bytes time 30332.0 to 30365.0 latency -23.0
32917 : f622d30 Sample 61509 bytes time 30365.0 to 30399.0 latency -9.0
32937 : f622d30 Sample 62280 bytes time 30399.0 to 30432.0 latency 5.0
32958 : f622d30 Sample 63084 bytes time 30432.0 to 30465.0 latency 17.0
32984 : f622d30 Sample 62388 bytes time 30465.0 to 30499.0 latency 24.0
33019 : f622d30 Sample 61956 bytes time 30499.0 to 30532.0 latency 23.0
33054 : f622d30 Sample 52196 bytes time 30532.0 to 30566.0 latency 21.0
33104 : f622d30 Sample 53707 bytes time 30566.0 to 30599.0 latency 5.0
33135 : f622d30 Sample 55162 bytes time 30599.0 to 30632.0 latency 8.0
33196 : f622d30 Sample 54511 bytes time 30632.0 to 30666.0 latency -21.0
33224 : f622d30 Sample 53676 bytes time 30666.0 to 30699.0 latency -15.0
33265 : f622d30 Sample 54214 bytes time 30699.0 to 30732.0 latency -23.0
33287 : f622d30 Sample 53590 bytes time 30732.0 to 30766.0 latency -12.0
33336 : f622d30 Sample 54067 bytes time 30766.0 to 30799.0 latency -27.0
33369 : f622d30 Sample 55115 bytes time 30799.0 to 30832.0 latency -27.0
33416 : f622d30 Sample 56462 bytes time 30832.0 to 30866.0 latency -40.0
33455 : f622d30 Sample 45412 bytes time 30866.0 to 30899.0 latency -46.0
33487 : f622d30 Sample 49165 bytes time 30899.0 to 30933.0 latency -45.0
33538 : f622d30 Sample 47378 bytes time 30933.0 to 30966.0 latency -62.0
33577 : f622d30 Sample 47024 bytes time 30966.0 to 30999.0 latency -68.0
33616 : f622d30 Sample 46739 bytes time 30999.0 to 31033.0 latency -74.0
33663 : f622d30 Sample 45601 bytes time 31033.0 to 31066.0 latency -87.0
33690 : f622d30 Sample 45939 bytes time 31066.0 to 31099.0 latency -81.0
33732 : f622d30 Sample 47212 bytes time 31099.0 to 31133.0 latency -90.0
33775 : f622d30 Sample 44130 bytes time 31133.0 to 31166.0 latency -98.0
33819 : f622d30 Sample 43858 bytes time 31166.0 to 31200.0 latency -110.0
33851 : f622d30 Sample 44417 bytes time 31200.0 to 31233.0 latency -108.0
33880 : f622d30 Sample 44330 bytes time 31233.0 to 31266.0 latency -104.0
33924 : f622d30 Sample 44660 bytes time 31266.0 to 31300.0 latency -115.0
33959 : f622d30 Sample 43832 bytes time 31300.0 to 31333.0 latency -116.0
33989 : f622d30 Sample 43512 bytes time 31333.0 to 31366.0 latency -113.0
34023 : f622d30 Sample 43342 bytes time 31366.0 to 31400.0 latency -114.0
34062 : f622d30 Sample 43589 bytes time 31400.0 to 31433.0 latency -119.0
34088 : f622d30 Sample 42888 bytes time 31433.0 to 31466.0 latency -112.0
34118 : f622d30 Sample 44217 bytes time 31466.0 to 31500.0 latency -108.0
34159 : f622d30 Sample 46987 bytes time 31500.0 to 31533.0 latency -116.0
34185 : f622d30 Sample 45233 bytes time 31533.0 to 31567.0 latency -109.0
34209 : f622d30 Sample 46052 bytes time 31567.0 to 31600.0 latency -99.0
34237 : f622d30 Sample 45819 bytes time 31600.0 to 31633.0 latency -94.0
34258 : f622d30 Sample 46946 bytes time 31633.0 to 31667.0 latency -82.0
34286 : f622d30 Sample 44469 bytes time 31667.0 to 31700.0 latency -76.0
34306 : f622d30 Sample 44398 bytes time 31700.0 to 31733.0 latency -63.0
34333 : f622d30 Sample 45456 bytes time 31733.0 to 31767.0 latency -57.0
34354 : f622d30 Sample 46051 bytes time 31767.0 to 31800.0 latency -44.0
34374 : f622d30 Sample 38146 bytes time 31800.0 to 31833.0 latency -31.0
34402 : f622d30 Sample 38028 bytes time 31833.0 to 31867.0 latency -26.0
34482 : f622d30 Sample 39705 bytes time 31867.0 to 31900.0 latency -72.0
34507 : f622d30 Sample 36533 bytes time 31900.0 to 31934.0 latency -64.0
34528 : f622d30 Sample 37019 bytes time 31934.0 to 31967.0 latency -51.0
34569 : f622d30 Sample 37277 bytes time 31967.0 to 32000.0 latency -59.0
34600 : f622d30 Sample 36698 bytes time 32000.0 to 32034.0 latency -56.0
34626 : f622d30 Sample 36436 bytes time 32034.0 to 32067.0 latency -48.0
34651 : f622d30 Sample 37650 bytes time 32067.0 to 32100.0 latency -41.0
34670 : f622d30 Sample 38623 bytes time 32100.0 to 32134.0 latency -26.0
34689 : f622d30 Sample 38525 bytes time 32134.0 to 32167.0 latency -12.0
34723 : f622d30 Sample 38196 bytes time 32167.0 to 32201.0 latency -12.0
34749 : f622d30 Sample 38130 bytes time 32201.0 to 32234.0 latency -5.0
34771 : f622d30 Sample 39116 bytes time 32234.0 to 32267.0 latency 7.0
34791 : f622d30 Sample 45008 bytes time 32267.0 to 32301.0 latency 19.0
34818 : f622d30 Sample 40588 bytes time 32301.0 to 32334.0 latency 27.0
34848 : f622d30 Sample 40633 bytes time 32334.0 to 32367.0 latency 29.0
34948 : f622d30 Sample 41867 bytes time 32367.0 to 32401.0 latency -37.0
34970 : f622d30 Sample 40974 bytes time 32401.0 to 32434.0 latency -26.0
34999 : f622d30 Sample 41854 bytes time 32434.0 to 32467.0 latency -22.0
35018 : f622d30 Sample 42312 bytes time 32467.0 to 32501.0 latency -8.0
35050 : f622d30 Sample 42155 bytes time 32501.0 to 32534.0 latency -6.0
35078 : f622d30 Sample 41618 bytes time 32534.0 to 32568.0 latency -1.0
35102 : f622d30 Sample 41394 bytes time 32568.0 to 32601.0 latency 9.0
35122 : f622d30 Sample 41221 bytes time 32601.0 to 32634.0 latency 22.0
35148 : f622d30 Sample 41515 bytes time 32634.0 to 32668.0 latency 29.0
35166 : f622d30 Sample 41570 bytes time 32668.0 to 32701.0 latency 45.0
35198 : f622d30 Sample 43045 bytes time 32701.0 to 32734.0 latency 47.0
35216 : f622d30 Sample 42187 bytes time 32734.0 to 32768.0 latency 61.0
35239 : f622d30 Sample 41181 bytes time 32768.0 to 32801.0 latency 72.0
35274 : f622d30 Sample 41675 bytes time 32801.0 to 32834.0 latency 70.0
35301 : f622d30 Sample 42541 bytes time 32834.0 to 32868.0 latency 76.0
35319 : f622d30 Sample 41916 bytes time 32868.0 to 32901.0 latency 92.0
35370 : f622d30 Sample 40903 bytes time 32901.0 to 32935.0 latency 75.0
35395 : f622d30 Sample 41798 bytes time 32935.0 to 32968.0 latency 84.0
35415 : f622d30 Sample 41537 bytes time 32968.0 to 33001.0 latency 97.0
35437 : f622d30 Sample 40623 bytes time 33001.0 to 33035.0 latency 107.0
35461 : f622d30 Sample 40275 bytes time 33035.0 to 33068.0 latency 117.0
35482 : f622d30 Sample 37519 bytes time 33068.0 to 33101.0 latency 129.0
35518 : f622d30 Sample 37575 bytes time 33101.0 to 33135.0 latency 126.0
35537 : f622d30 Sample 38719 bytes time 33135.0 to 33168.0 latency 142.0
35559 : f622d30 Sample 36653 bytes time 33168.0 to 33202.0 latency 152.0
35576 : f622d30 Sample 36593 bytes time 33202.0 to 33235.0 latency 170.0
35607 : f622d30 Sample 35818 bytes time 33235.0 to 33268.0 latency 171.0
35698 : f622d30 Sample 36516 bytes time 33268.0 to 33302.0 latency 113.0
35724 : f622d30 Sample 35436 bytes time 33302.0 to 33335.0 latency 122.0
35750 : f622d30 Sample 36906 bytes time 33335.0 to 33368.0 latency 128.0
35769 : f622d30 Sample 37786 bytes time 33368.0 to 33402.0 latency 143.0
35796 : f622d30 Sample 36125 bytes time 33402.0 to 33435.0 latency 149.0
35827 : f622d30 Sample 36410 bytes time 33435.0 to 33468.0 latency 151.0
35852 : f622d30 Sample 36077 bytes time 33468.0 to 33502.0 latency 159.0
35871 : f622d30 Sample 37942 bytes time 33502.0 to 33535.0 latency 175.0
35896 : f622d30 Sample 36691 bytes time 33535.0 to 33569.0 latency 182.0
35926 : f622d30 Sample 36991 bytes time 33569.0 to 33602.0 latency 186.0
35949 : f622d30 Sample 37085 bytes time 33602.0 to 33635.0 latency 196.0
35971 : f622d30 Sample 36362 bytes time 33635.0 to 33669.0 latency 207.0
35989 : f622d30 Sample 36669 bytes time 33669.0 to 33702.0 latency 223.0
36017 : f622d30 Sample 36624 bytes time 33702.0 to 33735.0 latency 229.0
36045 : f622d30 Sample 38299 bytes time 33735.0 to 33769.0 latency 233.0
36064 : f622d30 Sample 37931 bytes time 33769.0 to 33802.0 latency 248.0
36086 : f622d30 Sample 38297 bytes time 33802.0 to 33835.0 latency 259.0
36108 : f622d30 Sample 38490 bytes time 33835.0 to 33869.0 latency 270.0
36126 : f622d30 Sample 40219 bytes time 33869.0 to 33902.0 latency 286.0
36157 : f622d30 Sample 45656 bytes time 33902.0 to 33936.0 latency 288.0
36177 : f622d30 Sample 44289 bytes time 33936.0 to 33969.0 latency 302.0
36205 : f622d30 Sample 39973 bytes time 33969.0 to 34002.0 latency 307.0
36225 : f622d30 Sample 38835 bytes time 34002.0 to 34036.0 latency 321.0
36251 : f622d30 Sample 43513 bytes time 34036.0 to 34069.0 latency 329.0
36277 : f622d30 Sample 39879 bytes time 34069.0 to 34070.0 latency 336.0 <--- End of Preroll frames
36608 : f622d30 Sample 40240 bytes time 34102.0 to 34103.0 latency 37.0
36648 : f622d30 Sample 40200 bytes time 34136.0 to 34137.0 latency 32.0
36676 : f622d30 Sample 40430 bytes time 34169.0 to 34170.0 latency 36.0
36711 : f622d30 Sample 40407 bytes time 34203.0 to 34204.0 latency 35.0
36748 : f622d30 Sample 43949 bytes time 34236.0 to 34237.0 latency 31.0
36786 : f622d30 Sample 40345 bytes time 34269.0 to 34270.0 latency 26.0
36805 : f622d30 Sample 40497 bytes time 34303.0 to 34304.0 latency 41.0
36846 : f622d30 Sample 40504 bytes time 34336.0 to 34337.0 latency 33.0
36872 : f622d30 Sample 114853 bytes time 34369.0 to 34370.0 latency 40.0
36906 : f622d30 Sample 20719 bytes time 34403.0 to 34404.0 latency 41.0

Answer 1

Seek涉及暂停和重新启动流式传输：时间戳不连续。您必须在发送方自动重新计算时间戳以恢复连续性，或者在客户端检测此时间并在那里重新标记时间戳。或者，另一个选择，客户端将刷新队列并继续新的。

为实时源过滤器创建媒体样本时间戳？

1 个答案: