---
title: "Logs"
slug: "composer-monitor-logs"
updated: 2026-04-14T13:19:44Z
published: 2026-04-14T13:19:44Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://composer.docs.vindral.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Logs

Composer and Composer runtime will create log files in the Logs folder found in the application folder. The log files come in two formats: text files (.txt), and JSON files (.json)

#### Log Levels

There are five levels of debug messages:

- Fatal - The application will likely stop working, or a fatal error has occurred that will impact performance and/or output. It is advised to restart the application.
- Error - An error occurred. The application might be able to recover from the error.
- Warning - The application has detected an unexpected event that might impact performance and/or output. The warning might render an error, or the application might continue to operate without issues.
- Information - Normal log information
- Debug - More detailed information primarily used for debugging the application

#### Log format

The default log format for Composer looks like this:

```custom
[{Timestamp:yyyy-MM-dd HH:mm:ss.fff}] [{Level}] [{EventId}] {Message} {NewLine}
```

- [2023-10-06 14:16:11.203 **[Information]** [2001] Application started: VindralComposerRuntime R3 2023, v1.7.8678.19673
- [2023-10-06 14:16:21.873 **[Debug]** [1000] FFmpeg.RootPath set to C:\Program Files\FFmpeg\5\bin\
- [2023-10-06 14:16:23.930 **[Warning]** [3000] D:/Realsprint Dropbox/Realsprint HQ Clips/KeyerLab/Young-woman-dances-on-green-screen-1360884.mp4 No audio available
- [2023-10-06 20:21:09.503 **[Error]** [3510] Project file C:\VindralLocalMedia\Projects\ibk-hue-adjusts.prj not found.

#### Extended log format

It is possible to extend the log format to provide the **SystemLabel******(user-defined information) and **Version**(application version) values to the log lines. Providing useful information when running multiple instances of Composer - for log file collection and metrics search. To add the **SystemLabel** and **Version**, activate the *Add Server Label and Version to Log and Metrics* in [Settings](/v1/docs/settings).

The extended log format becomes:

```custom
[{Timestamp:yyyy-MM-dd HH:mm:ss.fff}] [{Level}] [{EventId}] [{SystemLabel}] [{Version}] {Message} {NewLine}
```

####