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raspivid has these options to cycle between capture and pause:

-s, --signal    : Cycle between capture and pause on Signal
-k, --keypress  : Cycle between capture and pause on ENTER

Suppose I use the -k option. After pressing Enter a number of times, I lose count. So how do I tell whether raspivid is now capturing or paused? I could monitor the file size of the output file, but that feels a bit dirty, especially if I also use the -sg option to segment the recordings.

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    I haven't used this option before and I don't have a Pi next to me right this second. The docs say that adding the verbose option, -v, displays a prompt for user input during keypress mode (-k). I don't know what'll be in the prompt. Could you test it?
    – goobering
    Jul 14, 2016 at 16:38
  • @goobering The -v option indeed adds status update messages to the console output. Very useful. Thanks.
    – Kal
    Jul 15, 2016 at 1:59

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Per the comments below the question, when raspivid is started using both the keypress option (-k) and the verbose option (-v), the user is provided with an on-screen prompt which allows the user to distinguish between capturing/not capturing modes.

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