For Pyro 5 steps:
Set the Pyro 5 to transmitter mode and insert an SD card.
Turn on the trigger function in Pyro 5 system settings and select the Camera control. Choose the [Sony], [A7M4].

For Camera Settings (A7M4 ):
1.Set the output frame rate to the same as the camera's recording frame rate

2.Menu->HDMI settings->REC control->On

3.Menu->HDMI settings->Time Code Output->On

4.Start recording on camera. Pyro 5 will record the proxy file simultaneously and store the proxy file in the folder "Proxy".

5.Copy the video source file from SD card.

Open editing software such as DaVinci Resolve, import the camera source file and Pyro 5 proxy file respectively, right-click the camera source file and select Relink Proxy File to associate the camera proxy file with the camera source file. Subsequent editors can quickly edit the proxy file.