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Here is an example of an entry in Time To Sample Box (stts) in a Mp4 file:

Entry{count=1, delta=4147}

How they calculate the value of delta. I guess it involves I or B frames. But I didn't find any instruction. Can anyone help me?

HaveNoDisplayName
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TOP
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  • If you figured it out meanwhile, please let me know! I am dealing with the exact same problem right now: How to compute the delta(s).. – gilgamash Aug 19 '16 at 07:11
  • @gilgamash Unfortunately there is no method for calculating the value of delta. – TOP Sep 01 '16 at 07:29

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In mdhd there is Time Scale atom that is the number of time units that pass per second. You can use it to calculate times.

rick
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