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29th June 2011, 23:49 | #1 | Link |
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SCR and PTS values reset to zero every 17 secs
I have several VOB files where the SCR and PTS timestamps reset to zero every 17 seconds or so. I know that SCR and PTS values will eventually wrap round, but that would take many hours to happen. This is happening every 17 seconds approx, and always at a GOP start.
Below is some abbreviated output from DGIndex which illustrates what is happening. Any idea why they are encoded this way? Code:
DGIndex Timestamps Dump frame rate = 25.000000 leading B frames = 2 SCR 91545600, [3390ms] SCR 91589486, [3392ms] V PTS 330419 [3671ms] V DTS 319619 [3551ms] GOP start Decode picture: temporal reference 2[I] SCR 91633372, [3393ms] SCR 91677257, [3395ms] SCR 91721143, [3397ms] SCR 91765029, [3398ms] .... .... .... SCR 465276343, [17232ms] SCR 465320229, [17234ms] SCR 465408000, [17237ms] SCR 0, [0ms] <<<<<<<<< RESET TO ZERO SCR 43886, [1ms] V PTS 31713 [352ms] V DTS 20913 [232ms] GOP start Decode picture: temporal reference 2[I] SCR 87771, [3ms] SCR 131657, [4ms] SCR 175543, [6ms] .... .... .... SCR 466987886, [17295ms] SCR 467031771, [17297ms] SCR 467119543, [17300ms] SCR 0, [0ms] <<<<<<<<< RESET TO ZERO SCR 43885, [1ms] V PTS 29701 [330ms] V DTS 18901 [210ms] GOP start Decode picture: temporal reference 2[I] SCR 87771, [3ms] SCR 131657, [4ms] SCR 175542, [6ms] .... .... .... SCR 479583085, [17762ms] SCR 479626971, [17763ms] SCR 479670857, [17765ms] SCR 0, [0ms] <<<<<<<<< RESET TO ZERO SCR 43886, [1ms] V PTS 29052 [322ms] V DTS 18252 [202ms] GOP start Decode picture: temporal reference 2[I] SCR 87772, [3ms] SCR 131658, [4ms] SCR 175543, [6ms] ... ... ... Last edited by ipanema; 29th June 2011 at 23:54. |
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