Synchronising audio and video of RTP Streams

[patrickcorrigan]

I'm using the following two commands to create rtp streams for Pion to send over webrtc.

ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -f  x11grab -framerate 60 -video_size $1 -i :0+$2 -c:v h264_nvenc -b:v 4M  -forced-idr 1 -g 2  -f rtp rtp://127.0.0.1:5004?pkt_size=1200

ffmpeg -f pulse -i default -af 'adelay=0|0' -c:a libopus -b:a 192K -ssrc 1 -payload_type 111 -f rtp -max_delay 0 -application lowdelay rtp:/127.0.0.1:5005?pkt_size=1200

It works great but the audio isn't in sync with my video.

I read in this discussion that it requires using sender reports. I'm using the PeerConnection constructor so I should have the default interceptors which handle these automatically?

Since I'm recording these maybe I need to tell ffmpeg to add some timestamps to the recordings?

If anyone has any ideas I would be very grateful :)