Hi, I believe that's possible. I wouldn't say completely from the API, but kind of.

When an empty request is sent to vMix, it responds with a very useful XML-file containing lots of useful things about the what's in vMix for you to play with.

Below is a snippet from the XMl-file, displaying one of my inputs in my example project.



What you're looking for is the "state" attribute, which tells you whether the input is "Running" or is "Paused".

With this information you can do lots of things! For example you could once a second or so send empty requests to vMix to check if the state still is "Running", or if it's "Paused". Though this might be bad performance wise.

If I'd do something of the sorts, I'd take the duration of the video, subtract that with the position (both are displayed in seconds), let a timer go in the background and after the amount of seconds send the request to change the active input to the live broadcast instead.

The second solution should work for a series of recordings as well, but then you'd have to combine the durations of each video file. (I haven't used playlists, but I suppose you might get the total duration of that as well?) With this you could also create a kind of custom playlist app if you'd want that.

Hope this help!
/Kristoffer

Really helpful - thank you very much.