diff --git a/internal/ffmpeg/ffmpeg_test.go b/internal/ffmpeg/ffmpeg_test.go
index 6fdd9a91..c778babf 100644
--- a/internal/ffmpeg/ffmpeg_test.go
+++ b/internal/ffmpeg/ffmpeg_test.go
@@ -7,8 +7,17 @@ import (
 
 func TestParseArgs(t *testing.T) {
 	args := parseArgs("rtsp://example.com#video=h264#rotate=180")
-	assert.Equal(t, "ffmpeg -hide_banner -allowed_media_types video -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_transport tcp -i rtsp://example.com -c:v libx264 -g 50 -profile:v high -level:v 4.1 -preset:v superfast -tune:v zerolatency -an -vf transpose=1,transpose=1 -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp {output}", args.String())
+	assert.Equal(t, "ffmpeg -hide_banner -allowed_media_types video -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_transport tcp -i rtsp://example.com -c:v libx264 -g 50 -profile:v high -level:v 4.1 -preset:v superfast -tune:v zerolatency -pix_fmt:v yuvj420p -an -vf transpose=1,transpose=1 -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp {output}", args.String())
 
 	args = parseArgs("rtsp://example.com#video=h264#rotate=180#hardware=vaapi")
 	assert.Equal(t, "ffmpeg -hide_banner -hwaccel vaapi -hwaccel_output_format vaapi -allowed_media_types video -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_transport tcp -i rtsp://example.com -c:v h264_vaapi -g 50 -bf 0 -profile:v high -level:v 4.1 -sei:v 0 -an -vf format=vaapi|nv12,hwupload,transpose_vaapi=4 -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp {output}", args.String())
+
+	args = parseArgs("/media/bbb.mp4#video=mjpeg")
+	assert.Equal(t, "ffmpeg -hide_banner -re -i /media/bbb.mp4 -c:v mjpeg -an -f mjpeg -", args.String())
+
+	args = parseArgs("/media/bbb.mp4#video=mjpeg#hardware=vaapi")
+	assert.Equal(t, "ffmpeg -hide_banner -hwaccel vaapi -hwaccel_output_format vaapi -re -i /media/bbb.mp4 -c:v mjpeg_vaapi -an -vf format=vaapi|nv12,hwupload -f mjpeg -", args.String())
+
+	args = parseArgs("device?video=0&input_format=mjpeg&video_size=1920x1080")
+	assert.Equal(t, `ffmpeg -hide_banner -f dshow -input_format mjpeg -video_size 1920x1080 -i video="0" -c copy -f mjpeg -`, args.String())
 }
diff --git a/internal/ffmpeg/hardware/hardware.go b/internal/ffmpeg/hardware/hardware.go
index e560ac54..bb8f7174 100644
--- a/internal/ffmpeg/hardware/hardware.go
+++ b/internal/ffmpeg/hardware/hardware.go
@@ -29,8 +29,8 @@ func Init(bin string) {
 // empty engine for autoselect
 func MakeHardware(args *ffmpeg.Args, engine string, defaults map[string]string) {
 	for i, codec := range args.Codecs {
-		if len(codec) < 12 {
-			continue // skip short line (-c:v libx264...)
+		if len(codec) < 10 {
+			continue // skip short line (-c:v mjpeg...)
 		}
 
 		// get current codec name
@@ -45,8 +45,8 @@ func MakeHardware(args *ffmpeg.Args, engine string, defaults map[string]string)
 			continue // skip unsupported codec
 		}
 
-		// temporary disable probe for H265 and MJPEG
-		if engine == "" && name == "h264" {
+		// temporary disable probe for H265
+		if engine == "" && name != "h265" {
 			if engine = cache[name]; engine == "" {
 				engine = ProbeHardware(args.Bin, name)
 				cache[name] = engine