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Fredherro
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Video time and currentTime unsynced for dynamic stream

May 2, 2012 4:26 AM

Tags: #osmf #2.0

Using a DynamicStreamingResource with four mp4 rtmp streams is causing a problem.

 

Sometimes when the streams is auto switched, the switch is seamless but the mediaplayer.currentTime starts reporting the wrong time (mostly about 50 seconds before the "actual time"). After scrubbing the currentTime seems to be returning a correct value again.

 

When playing the streams seperatly the problem does not occur, so it seems that it's got something to do with the swithing.

 

Is it a bug in OSMF? In Flash? Or  does it have something to do with the keyframes in video files?

781 Views   2 Replies   Latest reply: TheRossman, Oct 13, 2012 11:13 AM
 
Replies
  • Silviu Vergoti
    Currently Being Moderated
    1. Silviu Vergoti,
    May 2, 2012 7:00 AM   in reply to Fredherro
    Report

    Hi,

     

    please check if the streams have sync'ed keyframes.

     

    Otherwise, please provide an example stream to replicate the problem.

     

    Thanks,

     

    S.

     
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  • TheRossman
    Currently Being Moderated
    2. TheRossman,
    Oct 13, 2012 11:13 AM   in reply to Silviu Vergoti
    Report

    I am getting this exact same behaviour all of a sudden with MBR streams served out of Akamai.  If I move the streams to Amazon Cloudfront they work fine.  I think this is an issue with FMS 4.5 as Cloudfront is still on FMS3.5 but Akamai has upgraded.

     

    I can provide test streams.  I did some detailed player logging, see below:

     

      player init
      loading release
      release loaded
      playing ad
      ad complete
      playing ad
      ad complete
      adding the stream: mp4:videolink/Bones_E804_low_16x9.mp4 @ 625
      adding the stream: mp4:videolink/Bones_E804_lowest_16x9.mp4 @ 429
      adding the stream: mp4:videolink/Bones_E804_medium_16x9.mp4 @ 820
      adding the stream: mp4:videolink/Bones_E804_high_16x9.mp4 @ 1210
      conviva title: Bones - S08E04 The Tiger in the Tale
      starting main content
      2-Second Heartbeat: 0
      stream switching? false, current stream index: 0, current time is: 0
      2-Second Heartbeat: 0
      2-Second Heartbeat: 0.901
      2-Second Heartbeat: 2.894
      2-Second Heartbeat: 4.903
      stream switching? true, current stream index: 0, current time is: 4.997
      2-Second Heartbeat: 6.899
      2-Second Heartbeat: 8.901
      2-Second Heartbeat: 10.902
      stream switching? false, current stream index: 3, current time is: 12.679
      2-Second Heartbeat: 12.896
      2-Second Heartbeat: 14.898
      2-Second Heartbeat: 16.904
      2-Second Heartbeat: 18.9
      2-Second Heartbeat: 20.893
      2-Second Heartbeat: 22.895
      2-Second Heartbeat: 24.892
      2-Second Heartbeat: 26.886
      2-Second Heartbeat: 28.856
      2-Second Heartbeat: 30.862
      2-Second Heartbeat: 32.86
      2-Second Heartbeat: 34.857
      2-Second Heartbeat: 36.858
      2-Second Heartbeat: 38.859
      2-Second Heartbeat: 40.848
      2-Second Heartbeat: 42.864
      2-Second Heartbeat: 44.861
      2-Second Heartbeat: 46.856
      2-Second Heartbeat: 48.855
      2-Second Heartbeat: 50.862
      2-Second Heartbeat: 52.858
      2-Second Heartbeat: 54.855
      2-Second Heartbeat: 56.859
      2-Second Heartbeat: 58.858
      2-Second Heartbeat: 60.77
      2-Second Heartbeat: 62.766
      2-Second Heartbeat: 64.77
      2-Second Heartbeat: 66.76
      2-Second Heartbeat: 68.75
      2-Second Heartbeat: 70.755
      2-Second Heartbeat: 72.751
      2-Second Heartbeat: 74.751
      2-Second Heartbeat: 76.744
      2-Second Heartbeat: 78.753
      2-Second Heartbeat: 80.75
      2-Second Heartbeat: 82.745
      2-Second Heartbeat: 84.753
      2-Second Heartbeat: 86.747
      2-Second Heartbeat: 88.747
      2-Second Heartbeat: 90.754
      2-Second Heartbeat: 92.746
      2-Second Heartbeat: 94.747
      2-Second Heartbeat: 96.75
      2-Second Heartbeat: 98.752
      2-Second Heartbeat: 100.755
      2-Second Heartbeat: 102.751
      2-Second Heartbeat: 104.751
      2-Second Heartbeat: 106.745
      2-Second Heartbeat: 108.753
      2-Second Heartbeat: 110.745
      2-Second Heartbeat: 112.742
      2-Second Heartbeat: 114.753
      2-Second Heartbeat: 116.75
      2-Second Heartbeat: 118.746
      2-Second Heartbeat: 120.755
      2-Second Heartbeat: 122.752
      2-Second Heartbeat: 124.747
      2-Second Heartbeat: 126.749
      2-Second Heartbeat: 128.75
      2-Second Heartbeat: 130.749
      2-Second Heartbeat: 132.753
      2-Second Heartbeat: 134.749
      2-Second Heartbeat: 136.74
      2-Second Heartbeat: 138.743
      2-Second Heartbeat: 140.738
      2-Second Heartbeat: 142.737
      2-Second Heartbeat: 144.744
      2-Second Heartbeat: 146.741
      2-Second Heartbeat: 148.738
      2-Second Heartbeat: 150.744
      2-Second Heartbeat: 152.741
      2-Second Heartbeat: 154.738
      2-Second Heartbeat: 156.743
      2-Second Heartbeat: 158.731
      2-Second Heartbeat: 160.728
      2-Second Heartbeat: 162.725
      2-Second Heartbeat: 164.732
      2-Second Heartbeat: 166.727
      2-Second Heartbeat: 168.726
      2-Second Heartbeat: 170.729
      2-Second Heartbeat: 172.731
      2-Second Heartbeat: 174.734
      2-Second Heartbeat: 176.723
      2-Second Heartbeat: 178.722
      2-Second Heartbeat: 180.719
      2-Second Heartbeat: 182.722
      2-Second Heartbeat: 184.719
      2-Second Heartbeat: 186.716
      2-Second Heartbeat: 188.719
      2-Second Heartbeat: 190.715
      2-Second Heartbeat: 192.717
      2-Second Heartbeat: 194.722
      2-Second Heartbeat: 196.719
      2-Second Heartbeat: 198.716
      2-Second Heartbeat: 200.723
      2-Second Heartbeat: 202.721
      2-Second Heartbeat: 204.713
      2-Second Heartbeat: 206.725
      2-Second Heartbeat: 208.723
      2-Second Heartbeat: 210.725
      2-Second Heartbeat: 212.722
      2-Second Heartbeat: 214.718
      2-Second Heartbeat: 216.716
      2-Second Heartbeat: 218.723
      2-Second Heartbeat: 220.718
      2-Second Heartbeat: 222.717
      2-Second Heartbeat: 224.723
      2-Second Heartbeat: 226.75
      2-Second Heartbeat: 228.789
      2-Second Heartbeat: 230.785
      2-Second Heartbeat: 232.772
      2-Second Heartbeat: 234.78
      2-Second Heartbeat: 236.776
      2-Second Heartbeat: 238.758
      2-Second Heartbeat: 240.77
      2-Second Heartbeat: 242.757
      2-Second Heartbeat: 244.754
      2-Second Heartbeat: 246.751
      2-Second Heartbeat: 248.757
      2-Second Heartbeat: 250.754
      2-Second Heartbeat: 252.758
      2-Second Heartbeat: 254.754
      2-Second Heartbeat: 256.748
      2-Second Heartbeat: 258.758
      2-Second Heartbeat: 260.788
      2-Second Heartbeat: 262.765
      2-Second Heartbeat: 264.772
      2-Second Heartbeat: 266.768
      2-Second Heartbeat: 268.754
      2-Second Heartbeat: 270.762
      2-Second Heartbeat: 272.757
      2-Second Heartbeat: 274.756
      2-Second Heartbeat: 276.753
      2-Second Heartbeat: 278.76
      2-Second Heartbeat: 280.754
      2-Second Heartbeat: 282.756
      2-Second Heartbeat: 284.75
      2-Second Heartbeat: 286.746
      2-Second Heartbeat: 288.751
      2-Second Heartbeat: 290.748
      2-Second Heartbeat: 292.739
      2-Second Heartbeat: 294.742
      2-Second Heartbeat: 296.739
      2-Second Heartbeat: 298.736
      2-Second Heartbeat: 300.733
      2-Second Heartbeat: 302.735
      2-Second Heartbeat: 304.737
      2-Second Heartbeat: 306.733
      2-Second Heartbeat: 308.73
      2-Second Heartbeat: 310.722
      2-Second Heartbeat: 312.72
      2-Second Heartbeat: 314.732
      2-Second Heartbeat: 316.727
      2-Second Heartbeat: 318.725
      2-Second Heartbeat: 320.732
      2-Second Heartbeat: 322.729
      2-Second Heartbeat: 324.723
      2-Second Heartbeat: 326.711
      2-Second Heartbeat: 328.618
      2-Second Heartbeat: 330.624
      2-Second Heartbeat: 332.621
      2-Second Heartbeat: 334.616
      2-Second Heartbeat: 336.611
      2-Second Heartbeat: 338.617
      2-Second Heartbeat: 340.621
      pause content - 341.084 secs
      playing ad
      172-Second Heartbeat: 341.084
      ad complete
      playing ad
      2-Second Heartbeat: 341.084
      82-Second Heartbeat: 341.084
      ad complete
      playing ad
      2-Second Heartbeat: 341.084
      162-Second Heartbeat: 341.084
      ad complete
      playing ad
      102-Second Heartbeat: 341.084
      ad complete
      resuming content - 341.084 secs
      2-Second Heartbeat: 342.858
      2-Second Heartbeat: 344.855
      stream switching? true, current stream index: 3, current time is: 345.041
      stream switching? true, current stream index: 3, current time is: 346.471
      2-Second Heartbeat: 346.855
      stream switching? true, current stream index: 3, current time is: 347.443
      2-Second Heartbeat: 348.86
      2-Second Heartbeat: 350.856
      stream switching? false, current stream index: 0, current time is: 400.863      // on this stream switch we have suddenly gone out of sync
      stream switching? false, current stream index: 0, current time is: 401.101
      2-Second Heartbeat: 402.345
      stream switching? false, current stream index: 0, current time is: 402.474
      2-Second Heartbeat: 404.351
      2-Second Heartbeat: 406.328
      2-Second Heartbeat: 408.325
      2-Second Heartbeat: 410.327
      2-Second Heartbeat: 412.326
      2-Second Heartbeat: 414.327
      2-Second Heartbeat: 416.33
      2-Second Heartbeat: 418.33
      2-Second Heartbeat: 420.326
      2-Second Heartbeat: 422.32
      2-Second Heartbeat: 424.332
      2-Second Heartbeat: 426.328
      2-Second Heartbeat: 428.324
      2-Second Heartbeat: 430.332
      2-Second Heartbeat: 432.327
      2-Second Heartbeat: 434.326
      2-Second Heartbeat: 436.329
      2-Second Heartbeat: 438.325
      2-Second Heartbeat: 440.332
      2-Second Heartbeat: 442.324
      2-Second Heartbeat: 444.327
      2-Second Heartbeat: 446.328
      2-Second Heartbeat: 448.317
      2-Second Heartbeat: 450.292
      2-Second Heartbeat: 452.287
      2-Second Heartbeat: 454.278
      2-Second Heartbeat: 456.291
      2-Second Heartbeat: 458.288
      2-Second Heartbeat: 460.292
      stream switching? true, current stream index: 0, current time is: 461.288
      2-Second Heartbeat: 462.29
      2-Second Heartbeat: 464.286
      2-Second Heartbeat: 466.293
      2-Second Heartbeat: 468.279
      2-Second Heartbeat: 470.276
      2-Second Heartbeat: 472.283
      2-Second Heartbeat: 474.28
      2-Second Heartbeat: 476.274
      2-Second Heartbeat: 478.274
      2-Second Heartbeat: 480.282
      stream switching? false, current stream index: 3, current time is: 481.199
      2-Second Heartbeat: 482.273
      2-Second Heartbeat: 484.276
      2-Second Heartbeat: 486.282
      2-Second Heartbeat: 488.277
      2-Second Heartbeat: 490.271
      2-Second Heartbeat: 492.273
      2-Second Heartbeat: 494.269
      2-Second Heartbeat: 496.267
      2-Second Heartbeat: 498.274
      2-Second Heartbeat: 500.271
      2-Second Heartbeat: 502.274
      2-Second Heartbeat: 504.252
      2-Second Heartbeat: 506.25
      2-Second Heartbeat: 508.235
      2-Second Heartbeat: 510.232
      2-Second Heartbeat: 512.235
      2-Second Heartbeat: 514.219
      2-Second Heartbeat: 516.196
      2-Second Heartbeat: 518.208
      2-Second Heartbeat: 520.228
      2-Second Heartbeat: 522.21
      2-Second Heartbeat: 524.199
      2-Second Heartbeat: 526.208
      2-Second Heartbeat: 528.219
      2-Second Heartbeat: 530.215
      2-Second Heartbeat: 532.21
      2-Second Heartbeat: 534.203
      2-Second Heartbeat: 536.189
      2-Second Heartbeat: 538.186
      2-Second Heartbeat: 540.176
      2-Second Heartbeat: 542.179
      2-Second Heartbeat: 544.185
      2-Second Heartbeat: 546.184
      2-Second Heartbeat: 548.169
      2-Second Heartbeat: 550.177
      2-Second Heartbeat: 552.176
      2-Second Heartbeat: 554.173
      2-Second Heartbeat: 556.17
      2-Second Heartbeat: 558.175
      2-Second Heartbeat: 560.172
      2-Second Heartbeat: 562.159
      2-Second Heartbeat: 564.166
      2-Second Heartbeat: 566.163
      2-Second Heartbeat: 568.159
      2-Second Heartbeat: 570.166
      2-Second Heartbeat: 572.162
      2-Second Heartbeat: 574.164
      2-Second Heartbeat: 576.164
      2-Second Heartbeat: 578.155
      2-Second Heartbeat: 580.155
      2-Second Heartbeat: 582.134
      2-Second Heartbeat: 584.145
      2-Second Heartbeat: 586.142
      2-Second Heartbeat: 588.147
      2-Second Heartbeat: 590.144
      2-Second Heartbeat: 592.139
      2-Second Heartbeat: 594.146
      2-Second Heartbeat: 596.143
      2-Second Heartbeat: 598.141
      2-Second Heartbeat: 600.147
      stream switching? true, current stream index: 3, current time is: 601.776
      2-Second Heartbeat: 602.14
      2-Second Heartbeat: 604.125
      2-Second Heartbeat: 606.127
      2-Second Heartbeat: 608.126
      2-Second Heartbeat: 610.113
      2-Second Heartbeat: 612.092
      2-Second Heartbeat: 614.082
      2-Second Heartbeat: 616.083
      2-Second Heartbeat: 617.968
      2-Second Heartbeat: 619.978
      2-Second Heartbeat: 621.975
      2-Second Heartbeat: 623.958
      2-Second Heartbeat: 625.969
      stream switching? false, current stream index: 2, current time is: 627.68
      2-Second Heartbeat: 627.965
      2-Second Heartbeat: 629.943
      2-Second Heartbeat: 631.939
      2-Second Heartbeat: 633.946
      2-Second Heartbeat: 635.942
      stream switching? true, current stream index: 2, current time is: 636.824
      2-Second Heartbeat: 637.937
      2-Second Heartbeat: 639.947
      2-Second Heartbeat: 641.945
      2-Second Heartbeat: 643.93
      2-Second Heartbeat: 645.937
      2-Second Heartbeat: 647.939
      2-Second Heartbeat: 649.96
      2-Second Heartbeat: 651.957
      2-Second Heartbeat: 653.954
      2-Second Heartbeat: 655.96
      stream switching? false, current stream index: 3, current time is: 657.824
      2-Second Heartbeat: 657.959
      2-Second Heartbeat: 659.941
      2-Second Heartbeat: 661.942
      2-Second Heartbeat: 663.946
      2-Second Heartbeat: 665.945
      2-Second Heartbeat: 667.936
      2-Second Heartbeat: 669.949
      2-Second Heartbeat: 671.943
      2-Second Heartbeat: 673.944
      2-Second Heartbeat: 675.951
      2-Second Heartbeat: 677.947
      2-Second Heartbeat: 679.943
      2-Second Heartbeat: 681.951
      2-Second Heartbeat: 683.948
      2-Second Heartbeat: 685.951
      2-Second Heartbeat: 687.944
      2-Second Heartbeat: 689.941
      2-Second Heartbeat: 691.938
      2-Second Heartbeat: 693.95
      2-Second Heartbeat: 695.947
      2-Second Heartbeat: 697.943
      2-Second Heartbeat: 699.939
      2-Second Heartbeat: 701.936
      2-Second Heartbeat: 703.934
      2-Second Heartbeat: 705.94
      2-Second Heartbeat: 707.938
      2-Second Heartbeat: 709.935
      2-Second Heartbeat: 711.928
      2-Second Heartbeat: 713.928
      2-Second Heartbeat: 715.925
      2-Second Heartbeat: 717.922
      2-Second Heartbeat: 719.914
      2-Second Heartbeat: 721.911
      2-Second Heartbeat: 723.912
      2-Second Heartbeat: 725.919
      2-Second Heartbeat: 727.917
      2-Second Heartbeat: 729.909
      2-Second Heartbeat: 731.92
      2-Second Heartbeat: 733.911
      2-Second Heartbeat: 735.921
      2-Second Heartbeat: 737.917
      2-Second Heartbeat: 739.913
      2-Second Heartbeat: 741.918
      2-Second Heartbeat: 743.918
      2-Second Heartbeat: 745.876
      2-Second Heartbeat: 747.875
      2-Second Heartbeat: 749.87
      2-Second Heartbeat: 751.879
      2-Second Heartbeat: 753.877
      2-Second Heartbeat: 755.873
      2-Second Heartbeat: 757.881
      2-Second Heartbeat: 759.875
      2-Second Heartbeat: 761.865
      2-Second Heartbeat: 763.872
      2-Second Heartbeat: 765.862
      2-Second Heartbeat: 767.872
      2-Second Heartbeat: 769.869
      2-Second Heartbeat: 771.865
      2-Second Heartbeat: 773.856
      2-Second Heartbeat: 775.86
      2-Second Heartbeat: 777.854
      2-Second Heartbeat: 779.854
      2-Second Heartbeat: 781.86
      2-Second Heartbeat: 783.856
      2-Second Heartbeat: 785.853
      2-Second Heartbeat: 787.861
      2-Second Heartbeat: 789.856
      2-Second Heartbeat: 791.855
      2-Second Heartbeat: 793.861
      2-Second Heartbeat: 795.854
      2-Second Heartbeat: 797.856
      2-Second Heartbeat: 799.853
      2-Second Heartbeat: 801.86
      2-Second Heartbeat: 803.856
      2-Second Heartbeat: 805.859
      2-Second Heartbeat: 807.857
      2-Second Heartbeat: 809.851
      2-Second Heartbeat: 811.861
      2-Second Heartbeat: 813.848
      2-Second Heartbeat: 815.839
      2-Second Heartbeat: 817.852
      2-Second Heartbeat: 819.849
      2-Second Heartbeat: 821.847
      2-Second Heartbeat: 823.841
      2-Second Heartbeat: 825.838
      2-Second Heartbeat: 827.838
      2-Second Heartbeat: 829.872
      2-Second Heartbeat: 831.871
      2-Second Heartbeat: 833.868
      2-Second Heartbeat: 835.874
      2-Second Heartbeat: 837.871
      2-Second Heartbeat: 839.868
      2-Second Heartbeat: 841.873
      2-Second Heartbeat: 843.872
      stream switching? true, current stream index: 3, current time is: 845.153
      2-Second Heartbeat: 845.87
      2-Second Heartbeat: 847.875
      2-Second Heartbeat: 849.864
      2-Second Heartbeat: 851.848
      2-Second Heartbeat: 853.856
      2-Second Heartbeat: 855.853
      2-Second Heartbeat: 857.85
      2-Second Heartbeat: 859.837
      pause content - 861.179 secs
      playing ad
      72-Second Heartbeat: 861.179
      stream switching? true, current stream index: 3, current time is: 861.179
      112-Second Heartbeat: 861.179
      ad complete
      playing ad
      2-Second Heartbeat: 861.179
      ad complete
      playing ad
      2-Second Heartbeat: 861.179
      142-Second Heartbeat: 861.179
      ad complete
      playing ad
      2-Second Heartbeat: 861.179
      32-Second Heartbeat: 861.179
      2-Second Heartbeat: 861.179
      132-Second Heartbeat: 861.179
      ad complete
      resuming content - 861.179 secs
      2-Second Heartbeat: 862.425
      stream switching? true, current stream index: 3, current time is: 862.733
      2-Second Heartbeat: 864.423
      stream switching? true, current stream index: 3, current time is: 865.101
      stream switching? true, current stream index: 3, current time is: 865.926
      2-Second Heartbeat: 866.419
      2-Second Heartbeat: 868.423
      stream switching? false, current stream index: 0, current time is: 920.908      // things come "back in sync" here, resulting in "skipped" content
      2-Second Heartbeat: 922.838
      stream switching? false, current stream index: 0, current time is: 924.18
      2-Second Heartbeat: 924.841
      2-Second Heartbeat: 926.836
      2-Second Heartbeat: 928.838
     

     
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