what file is pushed?

[JustinWebDev]

D:\scratch\scrcpy-win64-v3.3.4>scrcpy --list-displays
scrcpy 3.3.4 <https://github.com/Genymobile/scrcpy>
INFO: ADB device found:
INFO:     --> (tcpip)  10.22.22.167:5555               device  SHIELD_Android_TV
D:\scratch\scrcpy-win64-v3.3.4\scrcpy-server: **1 file pushed**, 0 skipped. 132.3 MB/s (90980 bytes in 0.001s)
[server] INFO: Device: [NVIDIA] NVIDIA SHIELD Android TV (Android 11)
[server] INFO: List of displays:
    --display-id=0    (1920x1080)

Observe the "1 file pushed". What file? From where to where?
Note that at the time the above cmd was issued, the video window does not render a stream (just solid black) and very little net traffic between the Shield and my Windows 10 PC via scrcpy --no-audio.

[Arun0A]

Must be the scrcpy-server (to /data/local/tmp/scrcpy-server.jar), however it would not be necessary if it is run in OTG mode.