How to use:
C:\>\camnet\bin\cnsdump.exe
CnsDump filename.cns -a# v[Apr 30 2015]
-a0 stats only
-a1 log intra-frames in index
-a2 log intra-frames
-a3 log all video frames
-a7 log all A/V frames
example: cnsdump 20130704.CNS -a0
Below is a sample output (tab width 8 suggested), using cnsdump.exe 20150501.CNS -a0 which
for this (-a0) dumps the recording file stats to the output file 20150501.CNS.txt.
BEGIN check of '20150501.CNS' for camnetserver\cam_m1031
0.000 T_FILE_INFO
recordingId: camnetrecording
properlyClosed: 1 (0=no, 1=yes)
indexItemSize: 8 bytes
indexPrecision: 2 seconds
discontinuity: 0 times
dataStartOffset: 80000 (524288)
nextDataWriteOffset64: 2dc2288 (47981192)
firstIndexOffset: 10000 (65536)
firstIndexSlotUsed: 22285
lastIndexSlotUsed: 41706
lastIndexSlotFlushed: 41706
indexTotalBytes: 458752 (usable: 360000)
indexIsInvalid: 0 times
isAudioDataOnly: 0
fixedNextWriteOffset: 0 times (for any T_FILE_INFO fix)
resumeRunCoumt: 24 times (resumed recording from close)
frameEpilogBytes: 16
tzBiasAtHostAtCreate: 300 minutes
tzBiasId: 2 (0=always std, 1=standard time, 2=daylight time)
marker40: 40
createdUtc64: 2015-05-01 17:22:49.182 UTC
flushedUtc64: 2015-05-02 04:30:42.132 UTC
serverCamName: camnetserver\cam_m1031
computerName: WIN864
userName:
eventsLastFlushedTick: 53161312
eventRecsAtLastFlush: 44
firstEventRecOffset: 1000 (4096)
eventRecsTotalBytes: 49152 (3072 max. event records)
eventRecs: 44
eventRecSize: 16 bytes
eventRecTimePrecision: 2 seconds
Most Recent SDP Info ----
wide: 480
high: 368
crop: yes (left= 0, top= 0, right= 0, bottom= 8)
codecTypeVideo: 8 (H.264)
profileIdc: 66 (H.264 & MPEG-4/part2)
profileIop: 0 (H.264)
levelIdc: 41 (H.264)
spsLen: 19 (H.264)
ppsLen: 4 (H.264)
fpsF: 30.0
codecTypeAudio: 2 (AAC_LC)
audioConfig: 1408 (5128)
audioDecoderFlags: 0
audioSamplerate: 16000
audioChannels: 1
audioBitsPerSample: 16
audioBitrate_k: 16
SPS: 67 42 0 29 e3 50 3c 17 fc b8 b 70 10 10 1a 41 e2 44 54
PPS: 68 ce 3c 80
lastFrameTimeLinear-V: 690.397 seconds
lastFrameTimeLinear-A: 690.368 seconds
lastSeqNoLinear-V: 19172
lastSeqNoLinear-A: 10751
lastFrameDurationMs-V: 36
lastFrameDurationMs-A: 67
----
0.015 T_FILE_INFO rc= 0
~~
0.015 T_FILE_EVENTREC
event records: 44
event record 1: 44570, 15, 3, 0, 1 [12:22:50], duration, mdHitMap, diHitMap, actionMap
event record 2: 45066, 15, 1, 0, 1 [12:31:06], duration, mdHitMap, diHitMap, actionMap
event record 3: 45686, 15, 1, 0, 1 [12:41:26], duration, mdHitMap, diHitMap, actionMap
event record 4: 45978, 15, 1, 0, 1 [12:46:18], duration, mdHitMap, diHitMap, actionMap
event record 5: 46556, 15, 1, 0, 1 [12:55:56], duration, mdHitMap, diHitMap, actionMap
event record 6: 50744, 15, 1, 0, 1 [14:05:44], duration, mdHitMap, diHitMap, actionMap
event record 7: 50840, 15, 2, 1, 1 [14:07:20], duration, mdHitMap, diHitMap, actionMap
event record 8: 50858, 15, 2, 0, 1 [14:07:38], duration, mdHitMap, diHitMap, actionMap
event record 9: 51414, 15, 1, 0, 1 [14:16:54], duration, mdHitMap, diHitMap, actionMap
event record 10: 52682, 15, 1, 0, 1 [14:38:02], duration, mdHitMap, diHitMap, actionMap
event record 11: 52838, 15, 1, 0, 1 [14:40:38], duration, mdHitMap, diHitMap, actionMap
event record 12: 53360, 15, 1, 0, 1 [14:49:20], duration, mdHitMap, diHitMap, actionMap
event record 13: 53468, 15, 2, 1, 1 [14:51:08], duration, mdHitMap, diHitMap, actionMap
event record 14: 53486, 15, 2, 0, 1 [14:51:26], duration, mdHitMap, diHitMap, actionMap
event record 15: 53558, 15, 0, 1, 1 [14:52:38], duration, mdHitMap, diHitMap, actionMap
event record 16: 53560, 15, 2, 0, 1 [14:52:40], duration, mdHitMap, diHitMap, actionMap
event record 17: 60160, 15, 1, 0, 1 [16:42:40], duration, mdHitMap, diHitMap, actionMap
event record 18: 61802, 15, 3, 0, 1 [17:10:02], duration, mdHitMap, diHitMap, actionMap
event record 19: 63124, 15, 1, 0, 1 [17:32:04], duration, mdHitMap, diHitMap, actionMap
event record 20: 64696, 15, 1, 0, 1 [17:58:16], duration, mdHitMap, diHitMap, actionMap
event record 21: 67472, 15, 1, 0, 1 [18:44:32], duration, mdHitMap, diHitMap, actionMap
event record 22: 67872, 15, 2, 1, 1 [18:51:12], duration, mdHitMap, diHitMap, actionMap
event record 23: 67890, 15, 2, 0, 1 [18:51:30], duration, mdHitMap, diHitMap, actionMap
event record 24: 69000, 15, 3, 0, 1 [19:10:00], duration, mdHitMap, diHitMap, actionMap
event record 25: 69018, 15, 2, 0, 1 [19:10:18], duration, mdHitMap, diHitMap, actionMap
event record 26: 69552, 15, 3, 1, 1 [19:19:12], duration, mdHitMap, diHitMap, actionMap
event record 27: 69568, 15, 2, 0, 1 [19:19:28], duration, mdHitMap, diHitMap, actionMap
event record 28: 72126, 15, 1, 0, 1 [20:02:06], duration, mdHitMap, diHitMap, actionMap
event record 29: 72356, 15, 1, 0, 1 [20:05:56], duration, mdHitMap, diHitMap, actionMap
event record 30: 72540, 15, 1, 0, 1 [20:09:00], duration, mdHitMap, diHitMap, actionMap
event record 31: 72542, 15, 2, 0, 1 [20:09:02], duration, mdHitMap, diHitMap, actionMap
event record 32: 73646, 15, 2, 0, 1 [20:27:26], duration, mdHitMap, diHitMap, actionMap
event record 33: 74434, 15, 1, 0, 1 [20:40:34], duration, mdHitMap, diHitMap, actionMap
event record 34: 74490, 15, 0, 128, 0 [20:41:30], duration, mdHitMap, diHitMap, actionMap
event record 35: 74510, 15, 0, 128, 0 [20:41:50], duration, mdHitMap, diHitMap, actionMap
event record 36: 74756, 15, 1, 0, 1 [20:45:56], duration, mdHitMap, diHitMap, actionMap
event record 37: 75368, 15, 1, 0, 1 [20:56:08], duration, mdHitMap, diHitMap, actionMap
event record 38: 76200, 15, 1, 0, 1 [21:10:00], duration, mdHitMap, diHitMap, actionMap
event record 39: 76200, 15, 2, 0, 1 [21:10:00], duration, mdHitMap, diHitMap, actionMap
event record 40: 76208, 15, 0, 1, 1 [21:10:08], duration, mdHitMap, diHitMap, actionMap
event record 41: 76224, 15, 2, 0, 1 [21:10:24], duration, mdHitMap, diHitMap, actionMap
event record 42: 82456, 15, 1, 0, 1 [22:54:16], duration, mdHitMap, diHitMap, actionMap
event record 43: 83116, 15, 2, 0, 1 [23:05:16], duration, mdHitMap, diHitMap, actionMap
event record 44: 83400, 15, 3, 0, 1 [23:10:00], duration, mdHitMap, diHitMap, actionMap
0.015 T_FILE_EVENTREC rc= 0
~~
0.015 T_FILE_INDEX64
first index slot used: 22285 [12:22:50]
lastIndexSlotUsed: 41706 [23:10:12]
Runs of used slots ----
run 1, start slot: 22285 [12:22:50] [file offset: 3b868]
end slot: 22292 [12:23:04] (run= 8)
run 2, start slot: 22533 [12:31:06] [file offset: 3c028]
end slot: 22540 [12:31:20] (run= 8)
run 3, start slot: 22843 [12:41:26] [file offset: 3c9d8]
end slot: 22850 [12:41:40] (run= 8)
run 4, start slot: 22989 [12:46:18] [file offset: 3ce68]
end slot: 22996 [12:46:32] (run= 8)
run 5, start slot: 23277 [12:55:54] [file offset: 3d768]
end slot: 23284 [12:56:08] (run= 8, holes in run= 2, hole run streak= 1)
run 6, start slot: 25371 [14:05:42] [file offset: 418d8]
end slot: 25378 [14:05:56] (run= 8)
run 7, start slot: 25417 [14:07:14] [file offset: 41a48]
end slot: 25436 [14:07:52] (run= 20)
run 8, start slot: 25706 [14:16:52] [file offset: 42350]
end slot: 25713 [14:17:06] (run= 8, holes in run= 1, hole run streak= 1)
run 9, start slot: 26340 [14:38:00] [file offset: 43720]
end slot: 26345 [14:38:10] (run= 6)
run 10, start slot: 26418 [14:40:36] [file offset: 43990]
end slot: 26425 [14:40:50] (run= 8)
run 11, start slot: 26680 [14:49:20] [file offset: 441c0]
end slot: 26687 [14:49:34] (run= 8)
run 12, start slot: 26731 [14:51:02] [file offset: 44358]
end slot: 26749 [14:51:38] (run= 19)
run 13, start slot: 26777 [14:52:34] [file offset: 444c8]
end slot: 26787 [14:52:54] (run= 11)
run 14, start slot: 30079 [16:42:38] [file offset: 4abf8]
end slot: 30087 [16:42:54] (run= 9, holes in run= 1, hole run streak= 1)
run 15, start slot: 30900 [17:10:00] [file offset: 4c5a0]
end slot: 30908 [17:10:16] (run= 9, holes in run= 2, hole run streak= 1)
run 16, start slot: 31561 [17:32:02] [file offset: 4da48]
end slot: 31569 [17:32:18] (run= 9, holes in run= 1, hole run streak= 1)
run 17, start slot: 32347 [17:58:14] [file offset: 4f2d8]
end slot: 32354 [17:58:28] (run= 8)
run 18, start slot: 33735 [18:44:30] [file offset: 51e38]
end slot: 33742 [18:44:44] (run= 8)
run 19, start slot: 33933 [18:51:06] [file offset: 52468]
end slot: 33952 [18:51:44] (run= 20)
run 20, start slot: 34497 [19:09:54] [file offset: 53608]
end slot: 34516 [19:10:32] (run= 20, holes in run= 1, hole run streak= 1)
run 21, start slot: 34774 [19:19:08] [file offset: 53eb0]
end slot: 34790 [19:19:40] (run= 17)
run 22, start slot: 36063 [20:02:06] [file offset: 566f8]
end slot: 36070 [20:02:20] (run= 8)
run 23, start slot: 36178 [20:05:56] [file offset: 56a90]
end slot: 36185 [20:06:10] (run= 8)
run 24, start slot: 36267 [20:08:54] [file offset: 56d58]
end slot: 36278 [20:09:16] (run= 12, holes in run= 2, hole run streak= 1)
run 25, start slot: 36820 [20:27:20] [file offset: 57ea0]
end slot: 36829 [20:27:38] (run= 10)
run 26, start slot: 37216 [20:40:32] [file offset: 58b00]
end slot: 37223 [20:40:46] (run= 8, holes in run= 1, hole run streak= 1)
run 27, start slot: 37242 [20:41:24] [file offset: 58bd0]
end slot: 37262 [20:42:04] (run= 21)
run 28, start slot: 37378 [20:45:56] [file offset: 59010]
end slot: 37384 [20:46:08] (run= 7)
run 29, start slot: 37684 [20:56:08] [file offset: 599a0]
end slot: 37691 [20:56:22] (run= 8)
run 30, start slot: 38097 [21:09:54] [file offset: 5a688]
end slot: 38119 [21:10:38] (run= 23, holes in run= 1, hole run streak= 1)
run 31, start slot: 41227 [22:54:14] [file offset: 60858]
end slot: 41234 [22:54:28] (run= 8)
run 32, start slot: 41556 [23:05:12] [file offset: 612a0]
end slot: 41565 [23:05:30] (run= 10)
run 33, start slot: 41697 [23:09:54] [file offset: 61708]
end slot: 41706 [23:10:12] (run= 10)
----
0.015 T_FILE_INDEX64 rc= 0
~~
0.031 T_FRM_HDR (show stats only)
Final video frame: ---- [startCode= 1 |41|] encryptDepth= 0 (this frame) commMode= COMM_RTSP_OVER_HTTP (0)
file offset: 2dc19b3 (47978931)
trueFrameBytes: 2117 (plus startCode byte)
W x H: 480 x 368 (crop: left= 0, top= 0, right= 0, bottom= 8)
frameTimeLinearD: 690.397
seqNoLinear: 19172
frameDurationMs: 36
frameTimeMidnightD: 83415.694 [23:10:15]
systemTime64: 2015-05-02 04:10:15.518 UTC
instantFpsF: 29.551
----
duration: 00:11:30
video frames: 19172 40.000 MB Mbps: 0.486 FPS: 27.8 DISC: 0
intra frames: 652 6.749 MB Mbps: 0.082 /frame: 10854 max: 15247
delta frames: 18520 33.251 MB /frame: 1882 max: 14241 ofs: 274d8c7
audio frames: 10751 1.240 MB Mbps: 0.015 /frame: 120 max: 196 DISC: 0
0.953 T_FRM_HDR rc= 0
~~
Encryption state: no frames encrypted
~~
---
END check of '20150501.CNS' for camnetserver\cam_m1031
The /frame: 10854 above, under FPS: 27.8, is the average frame size, in bytes. The maximum size of any one frame is to the right of that. DISC indicates the number of discontinuous frames seen, for example, the sequence number was not continuous (i.e., was not 1 more than the previous frame). The offset of the delta frame with the largest size is located at absolute offset (base-16) ofs: within the file.If the recording is encrypted, or parts of the recording are, the detail available is reduced.