# PIDs for DVB-Sub
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This section applies if you are [setting up DVB-Sub captions](output-embedded-and-more.md) in an output group that supports a transport stream. For example, UDP or SRT. You must specify the output PID.
+ In the relevant UDP output group, choose the output that has the DVB-Sub captions.
+ For **PID settings**, in **DVB-Sub PIDs**, enter the PID for the DVB-Sub captions in this output. Or keep the default.