Example 13 results in tsdump: cannot detect TS file format

[cafeclimber]

Trying to run Example 13 with the following command:

cat example.ts | dvbs2-tx --out-fd 3 3>&1 1>&2 | dvbs2-rx --out-fd 3 3>&1 1>&2 | tsp --realtime --buffer-size-mb 1 -O play

results in the following output:

log :info: Starting DVB-S2 Rx
tsdump: cannot detect TS file format

and then the application terminates. All of the other examples I've tried have worked, and running the following

cat example.ts | tsp --realtime --buffer-size-mb 1 -O play

does result in video playback.

Wondering if I'm missing something? Possible bug?