diff --git a/app/src/main/java/app/myzel394/alibi/db/AppSettings.kt b/app/src/main/java/app/myzel394/alibi/db/AppSettings.kt
index cfd47e9..37bb9c7 100644
--- a/app/src/main/java/app/myzel394/alibi/db/AppSettings.kt
+++ b/app/src/main/java/app/myzel394/alibi/db/AppSettings.kt
@@ -29,6 +29,8 @@ data class AppSettings(
     val theme: Theme = Theme.SYSTEM,
     val lastRecording: RecordingInformation? = null,
 
+    val filenameFormat: FilenameFormat = FilenameFormat.DATETIME_RELATIVE_START,
+
     /// Recording information
     // 30 minutes
     val maxDuration: Long = 15 * 60 * 1000L,
@@ -67,6 +69,10 @@ data class AppSettings(
         return copy(lastRecording = lastRecording)
     }
 
+    fun setFilenameFormat(filenameFormat: FilenameFormat): AppSettings {
+        return copy(filenameFormat = filenameFormat)
+    }
+
     fun setMaxDuration(duration: Long): AppSettings {
         if (duration < 60 * 1000L || duration > 10 * 24 * 60 * 60 * 1000L) {
             throw Exception("Max duration must be between 1 minute and 10 days")
@@ -124,14 +130,19 @@ data class AppSettings(
         ))
     }
 
+    fun exportToString(): String {
+        return Json.encodeToString(serializer(), this)
+    }
+
     enum class Theme {
         SYSTEM,
         LIGHT,
         DARK,
     }
 
-    fun exportToString(): String {
-        return Json.encodeToString(serializer(), this)
+    enum class FilenameFormat {
+        DATETIME_ABSOLUTE_START,
+        DATETIME_RELATIVE_START,
     }
 
     companion object {