 device.
The first unlabelled output is automatically assigned to the &quot;out0&quot;
label, but all the others need to be specified explicitly.
</p>
<p>The suffix &quot;+subcc&quot; can be appended to the output label to create an extra
stream with the closed captions packets attached to that output
(experimental; only for EIA-608 / CEA-708 for now).
The subcc streams are created after all the normal streams, in the order of
the corresponding stream.
For example, if there is &quot;out19+subcc&quot;, &quot