timecodestamper after webrtcbin -> decodebin failed ?

[Michael]

Hello,

I try to add a `timecodestamper` and a `timeoverlay` after a `decodebin`

[image: Bildschirmfoto 2020-05-08 um 20.47.40.png]

which I put after a `webrtcbin`

def on_add_stream(self,element, pad):

of a `webrtcbin`.

But I always get

** (python3:1527): CRITICAL **: 18:44:43.253:
gst_video_time_code_add_frames: assertion 'gst_video_time_code_is_valid
(tc)' failed

Why isn't that possible?
Or better why doesn't the webrtcbin -> decodebin offer a timestamp?

Thanks in advance, Michael
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