diff --git a/services/ffmpeg/progress.go b/services/ffmpeg/progress.go
index cccdc973..5cf1018c 100644
--- a/services/ffmpeg/progress.go
+++ b/services/ffmpeg/progress.go
@@ -1,10 +1,11 @@
 package ffmpeg
 
 import (
-	"github.com/samber/lo"
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/samber/lo"
 )
 
 type ProgressCallback func(Progress)
@@ -26,6 +27,8 @@ type StreamInfo struct {
 	TotalFrames  int
 	TotalSeconds float64
 	FrameRate    int
+	Height       int
+	Width        int
 }
 
 func ProbeResultToInfo(info *FFProbeResult) StreamInfo {
@@ -44,6 +47,10 @@ func ProbeResultToInfo(info *FFProbeResult) StreamInfo {
 	if !found {
 		stream = info.Streams[0]
 	}
+	if streamInfo.HasVideo {
+		streamInfo.Height = stream.Height
+		streamInfo.Width = stream.Width
+	}
 	if info != nil {
 		frames, _ := strconv.ParseInt(stream.NbFrames, 10, 64)
 		streamInfo.TotalFrames = int(frames)
diff --git a/services/transcode/video.go b/services/transcode/video.go
index 8bbf42b1..8122b6ba 100644
--- a/services/transcode/video.go
+++ b/services/transcode/video.go
@@ -65,7 +65,15 @@ func VideoH264(input common.VideoInput, cb ffmpeg.ProgressCallback) (*common.Vid
 		filterComplex += "[0:0]copy[main];"
 	}
 
-	filterComplex += fmt.Sprintf("[main]scale=-1:%d:force_original_aspect_ratio=decrease[out]", input.Height)
+	height := input.Height
+	width := -1
+	if info.Height != 0 && info.Width != 0 && info.Height > info.Width {
+		// portrait video
+		height = -1
+		width = input.Height
+	}
+
+	filterComplex += fmt.Sprintf("[main]scale=%[1]d:%[2]d:force_original_aspect_ratio=decrease[out]", width, height)
 
 	params = append(params,
 		"-filter_complex", filterComplex,