diff --git a/services/transcode/audio.go b/services/transcode/audio.go
index 6cf47d90..99cdc0ac 100644
--- a/services/transcode/audio.go
+++ b/services/transcode/audio.go
@@ -92,10 +92,16 @@ func AudioWav(input common.AudioInput, cb ffmpeg.ProgressCallback) (*common.Audi
 		return nil, err
 	}
 
+	fileInfo, err := os.Stat(outputFilePath)
+	if err != nil {
+		return nil, err
+	}
+
 	return &common.AudioResult{
 		OutputPath: outputPath,
 		Bitrate:    input.Bitrate,
 		Format:     "wav",
+		FileSize:   fileInfo.Size(),
 	}, nil
 }
 
@@ -161,9 +167,15 @@ func AudioMP3(input common.AudioInput, cb ffmpeg.ProgressCallback) (*common.Audi
 		return nil, err
 	}
 
+	fileInfo, err := os.Stat(outputFilePath)
+	if err != nil {
+		return nil, err
+	}
+
 	return &common.AudioResult{
 		OutputPath: outputPath,
 		Bitrate:    input.Bitrate,
 		Format:     "mp3",
+		FileSize:   fileInfo.Size(),
 	}, nil
 }
diff --git a/services/transcode/linear_normalize.go b/services/transcode/linear_normalize.go
index c289325c..3111b1f2 100644
--- a/services/transcode/linear_normalize.go
+++ b/services/transcode/linear_normalize.go
@@ -2,10 +2,11 @@ package transcode
 
 import (
 	"fmt"
-	"github.com/bcc-code/bccm-flows/paths"
 	"os"
 	"path/filepath"
 
+	"github.com/bcc-code/bccm-flows/paths"
+
 	"github.com/bcc-code/bccm-flows/common"
 	"github.com/bcc-code/bccm-flows/services/ffmpeg"
 )
@@ -45,7 +46,13 @@ func AdjustAudioLevel(input common.AudioInput, adjustment float64, cb ffmpeg.Pro
 		return nil, err
 	}
 
+	fileInfo, err := os.Stat(outputFilePath)
+	if err != nil {
+		return nil, err
+	}
+
 	return &common.AudioResult{
 		OutputPath: outputPath,
+		FileSize:   fileInfo.Size(),
 	}, nil
 }