Two Hosts on One Machine

You can run Premiere Pro and After Effects at the same time with PreviewMonitor loaded in both. They do not collide: everything that could collide is kept separate per host. Your iPhone sees two devices in its list and pairs with each one independently.

The same plugin binary is loaded by both applications, but each runs in its own process, and the plugin asks which application it is in before it picks a port, a network identity, a log file and a trust store.

What is separate

The separator in the display name is an em dash. A machine named STUDIO-PC shows up as STUDIO-PC — Premiere and STUDIO-PC — After Effects.

The UDP video and audio ports, 47101 and 47102, are shared — they are ports on the iPhone, not on the host, so two host applications never contend for them.

What is shared

One file, install.json, holds the machine's identity and the two Setup-window toggles. Both hosts read and write it:

• Device name — rename it in one host's Setup window and both change. Each host still appends its own suffix.
• Discoverable on network — one switch for the whole machine.
• Use NVIDIA / Intel HW HEVC encoder — likewise, one switch for both.

There is no way to make one host discoverable and the other not.

Pairing both

Each host issues its own pairing token, so you pair twice. There is nothing special to do — connect to the first device, type the code, then connect to the second and type its code.

Both rows carry the same machine name and differ only by the suffix after the em dash.

Clicking Forget in one host's Setup window has no effect on the other. The two lists are genuinely independent files:

trusted.json and trusted-ae.json sit next to each other, alongside the shared install.json.

The full pairing model is in Trusted iPhones.

One phone, one host at a time

The phone connects to one device at a time. Switching from the Premiere Pro device to the After Effects device is a disconnect and a reconnect, and both happen automatically when you pick the other row.

Each host also accepts only one phone. A second iPhone connecting to the same host replaces the first.

Reading the right log

On Windows the two hosts write different files in the same folder, so make sure you are reading the one you mean:

%LOCALAPPDATA%\PremiereLive\plugin.log        Premiere Pro
%LOCALAPPDATA%\PremiereLive\plugin-ae.log     After Effects

macOS writes no plugin log file at all — both hosts log to the unified system log under the same subsystem, separated by process. See Logs and diagnostics.

A known rough edge

The Setup window's Advanced info → NETWORK → Ports row is hard-coded to 47100 control · 47101 video · 47102 audio. Opened from After Effects it still says 47100, even though that host listens on 47110. The video and audio ports it lists are correct.

Discovery is unaffected — the port travels in the mDNS record, not in that label.

Program Monitor and Source Monitor

A second, smaller version of the same question comes up inside Premiere Pro alone. Premiere Pro creates one Transmit instance per open sequence and per monitor, and activates the ones that are on screen.

Both the Program Monitor and the Source Monitor can be active at once. When they are, both feed the same single connection to your phone — the plugin runs one network transport per process, and every active instance pushes into it.

There is no monitor picker. Not in the app, not in the Setup window, and not in the protocol: the plugin has no command for choosing a source. What you see is whichever monitor Premiere Pro most recently pushed a frame from.

If the phone keeps flicking between two different pictures, close or deactivate the monitor you do not want. Playing back in the monitor you do want is usually enough, because a monitor that is not producing frames stops pushing.