Learn how to use Tacview with DCS World: install the exporter, record ACMI files, analyse sorties, and fix export or multiplayer issues.
To use Tacview with DCS World, install Tacview’s DCS exporter, enable flight-data recording in DCS’s Tacview special options, fly a mission, then open the resulting ACMI file in Tacview. The exporter records positions, weapons and events; multiplayer servers may restrict, delay or disable some data.
How do I set up Tacview in DCS World?
Install the exporter in the active DCS Saved Games profile, enable recording, and test it with a short single-player flight.
- Install Tacview with DCS closed. Run the Tacview installer and allow its DCS World integration or exporter component to be installed. Tacview itself does not have to be on the same drive as DCS.
- Check the active DCS profile. The integration normally uses
%USERPROFILE%\Saved Games\DCS\Scripts, with a different DCS folder name possible for legacy, test or custom profiles. Steam and standalone installations use the same general method, but separate profiles can make an exporter appear missing; see our explanation of how DCS editions and Saved Games profiles interact. - Enable flight recording. Start DCS World, open
Options > Special > Tacview, and turn on flight-data recording. Exact option labels can differ between Tacview releases. Real-time telemetry is separate and is not required for an ordinary post-flight ACMI recording. - Fly a test mission. Use a short single-player mission first, employ or observe a weapon if possible, and leave the mission normally so the recording can be finalised.
- Open the ACMI file. Tacview recordings normally appear in the Windows
Documents\Tacviewfolder as.acmior compressed.zip.acmifiles. Open the newest file from Tacview and use the timeline to move through the sortie.
Tacview is an exporter-backed utility rather than a conventional aircraft mod. Its files belong in the Saved Games profile, not scattered through the protected DCS installation; our guide to the DCS Saved Games and Scripts layout explains the distinction. A normal Tacview installation should not require editing core DCS files or MissionScripting.lua.
Leave real-time telemetry disabled unless you specifically need a live display and the multiplayer server permits it. Basic recording and replay do not depend on it, while some live or advanced tools can vary by Tacview edition.
What should I look at in a DCS Tacview replay?
The fastest way to learn from a Tacview sortie is to select the decisive event, then work backwards to see how the geometry developed.
| Review point | What to inspect | What it reveals |
|---|---|---|
| Before a merge | Airspeed, altitude, flight paths and angle-off | Who entered with the better energy state and turning position |
| At missile launch | Range, closure, target aspect, launch altitude and both aircraft’s manoeuvres | Whether the shot had useful energy rather than merely being inside a nominal range |
| During defence | Reaction time, terrain, altitude change and geometry relative to the threat | Whether the defence forced the weapon to spend energy or simply prolonged the engagement |
| Formation or route flying | Spacing, altitude deviations, timing and ground track | Where the formation became unstable or the planned timing was lost |
Select your aircraft and the relevant opponent or weapon, enable labels and trails where useful, and scrub backwards from the launch, hit or loss event. Reviewing the preceding half-minute usually teaches more than watching the entire sortie at normal speed.
An ACMI replay is not a video or a complete copy of DCS’s internal simulation. Tacview reconstructs the flight from exported samples, and some radar states, seeker calculations, damage details or hidden units may be absent. Treat tiny miss distances and interpolated positions cautiously.
Why is Tacview not recording DCS World?
If Tacview is not recording DCS World, check the exporter installation, recording option and server permissions in that order.
| Symptom | Likely cause | Fix |
|---|---|---|
| No Tacview panel under Special options | The exporter is absent or installed in the wrong Saved Games profile | Close DCS, rerun the Tacview installer, and confirm which DCS profile is actually being used |
| No ACMI after a single-player mission | Recording is disabled, the output folder is unavailable, or the mission did not finalise | Enable recording, fly another short mission, exit normally, and check the user’s Documents folder, including any Windows folder redirection |
| Tacview stopped after another utility was installed | Scripts\Export.lua was overwritten instead of sharing its export calls | Back up Export.lua, then repair or reinstall the affected integrations so their required calls are chained; do not delete the file blindly |
| Only your aircraft appears | The multiplayer server limits object export | Confirm the server policy with its administrator; there is no legitimate client-side override |
| Large recordings or new stutters | A complex mission or unnecessary live telemetry is adding export work | Disable real-time telemetry and compare with another short mission before changing unrelated DCS settings |
A useful diagnostic is to record a one-aircraft single-player mission. If that works, Tacview’s local integration is functioning and the missing multiplayer data is probably caused by server export rules rather than the installation.
Does Tacview work in DCS multiplayer?
Tacview works in DCS multiplayer only to the extent allowed by the server’s export policy.
- A server may permit full recording, restrict clients to their own aircraft, delay usable data, or disable object export completely.
- Enemy aircraft, missiles or ground units can therefore be absent even though your own flight recorded correctly.
- Live telemetry may expose information unavailable in the cockpit, so leave it off unless the server operator has expressly permitted it.
- For organised events, the administrator may record a server-side ACMI file and release it after the mission, providing a more complete debrief than individual client files.
Can I make a Tacview file from an old DCS track?
An old DCS track can sometimes produce a Tacview recording when replayed with the exporter enabled.
If the .trk replay reproduces the flight correctly, Tacview can record the telemetry exported during that replay. DCS tracks can diverge from the original mission, however, so this is a recovery method rather than a dependable substitute for recording the sortie live.