[FFmpeg-user] Decklink timestamp_align, what should it do?

Bouke bouke at editb.nl
Sun May 2 11:49:13 EEST 2021

From the manual:
Capture start time alignment in seconds. If set to nonzero, input frames are dropped till the system timestamp aligns with configured value

Ok, when I put -timestamp_align in my command, it  does wait ‘a bit’ before starting capture.
That’s what I’m after, but i have no clue how long it waits. It’s not a ‘wait X seconds’ for sure.

So my question, what is 'the system timestamp’? How do I get it so I can enter the correct value?



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