can't consume from gstreamer (astits: only one sync byte detected in first 193 bytes error)

Hi, I've been experimenting with this package with the aim of adding a WHIP mode. But I can't get the demo to interop with gstreamer. I added some debug and I see an error is returned : `astits: only one sync byte detected in first 193 bytes` and then it stops consuming - I see no video on the webRTC browser (fork is here [https://github.com/everycastlabs/donut](https://github.com/everycastlabs/donut)) I tried the same code against OBS and it works (although it is very jerky) My pipeline looks like this: `exec gst-launch-1.0 -v \ v4l2src device=/dev/video50 \ ! video/x-raw,width=1920,height=1080,framerate=30/1,format=NV12\ ! videoconvert \ ! video/x-raw,width=1920,height=1080,framerate=30/1,format=RGB\ ! amlvenc encoder-buffer-size=1024 min-buffers=6 max-buffers=6 gop=1 bitrate=10000 framerate=30 ! video/x-h264,profile=high \ ! mpegtsmux ! srtserversink streamid=test uri=srt://:8888/` Any hints as to where I should look ?