Unable to uncompress zip result from realtime trip updates, vehicle pos API



I am trying to use the real-time trip updates and real-time vehicle positions API.
For both APIs, I saved the response as a zip file but it seems to be corrupted and cannot be uncompressed.

The zip file seems to be working for other APIs like full gtfs schedule.
Is there something I am missing about the format, or is this an error from the server side.


Okay no worries, figured out that the realtime data is protobuf format.