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question about encode statistics

1330hayacool7102
Guru 10655 points

Hi TI-friends,

rdk3.0, dm8168, ch0~15 d1, ch16~31 cif

Hereunder is my statistics, I found that ch14/15 have obvious frame-skip than others. Did you know why?

 [m3video]  *** ENCODE Statistics ***
 [m3video]
 [m3video]  Elasped Time           : 849 secs
 [m3video]
 [m3video]
 [m3video]  CH  | In Recv In Skip In User  Out Latency
 [m3video]  Num | FPS     FPS     Skip FPS FPS Min / Max
 [m3video]  --------------------------------------------
 [m3video]    0 |      25       0        0  25  55 / 295
 [m3video]    1 |      23       0        0  23  79 / 313
 [m3video]    2 |      23       0        0  22  79 / 313
 [m3video]    3 |      23       0        0  22  79 / 310
 [m3video]    4 |      23       0        0  22  79 / 310
 [m3video]    5 |      23       1        0  22  79 / 310
 [m3video]    6 |      24       1        0  22  79 / 310
 [m3video]    7 |      24       1        0  22  79 / 303
 [m3video]    8 |      23       0        0  23  79 / 303
 [m3video]    9 |      23       1        0  22  79 / 303
 [m3video]   10 |      24       1        0  22  79 / 303
 [m3video]   11 |      24       2        0  22  79 / 303
 [m3video]   12 |      25       3        0  21  79 / 303
 [m3video]   13 |      25       5        0  20  79 / 303
 [m3video]   14 |      27       7        0  19  79 / 305
 [m3video]   15 |      28      11        0  16  79 / 305
 [m3video]   16 |      24       0        0  24  63 / 295
 [m3video]   17 |      24       0        0  24  63 / 296
 [m3video]   18 |      24       0        0  24  63 / 298
 [m3video]   19 |      24       0        0  24  63 / 298
 [m3video]   20 |      24       0        0  24  63 / 305
 [m3video]   21 |      24       0        0  23  63 / 305
 [m3video]   22 |      24       0        0  23  63 / 305
 [m3video]   23 |      24       1        0  23  63 / 305
 [m3video]   24 |      24       1        0  23  63 / 305
 [m3video]   25 |      24       1        0  23  71 / 311
 [m3video]   26 |      24       1        0  23  71 / 311
 [m3video]   27 |      24       1        0  23  71 / 313
 [m3video]   28 |      24       1        0  23  71 / 315
 [m3video]   29 |      24       1        0  23  71 / 315
 [m3video]   30 |      24       1        0  22  71 / 315
 [m3video]   31 |      24       2        0  22  71 / 315

  • 0
    Guru 10655 points

    Hi Badri,

      Any idea about this?

  • 0 in reply to 1330hayacool7102
    TI__Guru 59700 points

    Is your question why there is frame drop or is it why the frame drop in the  higher channel numbers like 14-15 ?

  • 0 in reply to Badri Narayanan
    Guru 10655 points

    Hi badri,

        thanks for your response.

      my question is why the frame-drop is higher in the channel number like 14-15.

  • 0 in reply to 1330hayacool7102
    TI__Guru 59700 points

    EncLink has a common pool of buffers shared by all channels with the same resolution. Also in encLink processing always starts from channel 0 and goes to maxEncChannels.

    If system is not realtime lower channel numbers will hold buffers for longer time resulting in buffers being unavailable for higher channel numbers so you will see more frame drop in higher channel numbers.

     

  • 0 in reply to Badri Narayanan
    Guru 10655 points

    hi badri,

      as you said, the encLink processing start from channel 0, and how about other links such as decLink/captureLink...etc?

    are all links starts from channel 0? if not, what's the order? and is there meaning inside?

  • 0 in reply to 1330hayacool7102
    TI__Guru 59700 points

    All links start processing from channel 0

  • 0 in reply to Badri Narayanan
    Guru 10655 points

    hi badri,

    by my observation as below, it seems the printed message conflict your speaking, did you have any idea?

     [MOTION DETECTED] 179217660: SCD CH <0> CAP CH = 0
     [MOTION DETECTED] 179217662: SCD CH <1> CAP CH = 1
     [MOTION DETECTED] 179217663: SCD CH <2> CAP CH = 2
     [MOTION DETECTED] 179217709: SCD CH <12> CAP CH = 12
     [MOTION DETECTED] 179217710: SCD CH <13> CAP CH = 13
     [MOTION DETECTED] 179217711: SCD CH <14> CAP CH = 14
     [MOTION DETECTED] 179217713: SCD CH <15> CAP CH = 15
     [MOTION DETECTED] 179217719: SCD CH <8> CAP CH = 8
     [MOTION DETECTED] 179217720: SCD CH <9> CAP CH = 9
     [MOTION DETECTED] 179217724: SCD CH <0> CAP CH = 0
     [MOTION DETECTED] 179217725: SCD CH <1> CAP CH = 1
     [MOTION DETECTED] 179217726: SCD CH <2> CAP CH = 2
     [MOTION DETECTED] 179217728: SCD CH <3> CAP CH = 3
     [MOTION DETECTED] 179217729: SCD CH <4> CAP CH = 4
     [MOTION DETECTED] 179217732: SCD CH <5> CAP CH = 5
     [MOTION DETECTED] 179217735: SCD CH <7> CAP CH = 7
     [MOTION DETECTED] 179217756: SCD CH <0> CAP CH = 0
     [MOTION DETECTED] 179217758: SCD CH <1> CAP CH = 1
     [MOTION DETECTED] 179217759: SCD CH <2> CAP CH = 2