Warning: It is closer to example code than daily use code.

There are dependencies on python and nodejs.

It is nodejs script that receives mqtt notifications and starts live recording.
You should edit .env before use.

Use it at your own risk. Also, I don't own a Mac or Linux, so it's not tested.

Known Limitation

1. If you use streamlink, you will miss the beginning.
   so, experimental example of running the python wrapper using instagram_private_api_extensions is in the /testing folder. This method may have video quality problems.
   To fix this, You should edit live.py in side-packages/instagram_private_api_extensions like this. From

               representations = sorted(
                   representations,
                   key=lambda rep: (
                       (int(rep.attrib.get('width', '0')) * int(rep.attrib.get('height', '0'))) or
                       int(rep.attrib.get('bandwidth', '0')) or
                       rep.attrib.get('FBQualityLabel') or
                       int(rep.attrib.get('audioSamplingRate', '0'))),
                   reverse=True)
               representation = representations[0]
               representation_id = representation.attrib.get('id', '')
               

to

               representations = sorted(
                   representations,
                   key=lambda rep: (
                       (int(rep.attrib.get('width', '0')) * int(rep.attrib.get('height', '0'))),
                       int(rep.attrib.get('bandwidth', '0'))
                       or
                       int(rep.attrib.get('audioSamplingRate', '0'))
                       ),
                   reverse=True)
               representation = representations[0]
               representation_id = representation.attrib.get('id', '')

simply sort algorithm fault.There may be multiple items of the same resolution with different bandwidths. To get the original quality, it must be live-pst-v.
Sometimes, live-pst-v may not have the best resolution or bandwidth. So, I am considering two options to get the original resolution. And I think you should be modified like this instead above.

                pst_rep = None;
               for rep_elem in representations:
                   if(rep_elem.attrib.get('id','') == "live-pst-v"):
                       pst_rep =  rep_elem
               if pst_rep is not None:
                   representation = pst_rep
                   representation_id = representation.attrib.get('id', '')

or

               representations = sorted(
                   representations,
                   key=lambda rep: (
                       int(rep.attrib.get('FBMaxBandwidth', '0'))
                       or
                       int(rep.attrib.get('audioSamplingRate', '0'))
                       ),
                   reverse=True)
               representation = representations[0]
               representation_id = representation.attrib.get('id', '')

2. Sometimes notifications may not arrive.

3. The script for nodejs is example script using instagram_mqtt. If your internet is disconnected, mtqq will not reconnect and node script just will exit.
   In other words, you cannot receive notification.
   Since upstream is not maintained, there is currently no solution. I'm thinking of a Launcher script that checks if the script is running.