@@ -77,6 +77,7 @@ r.HandleFunc("GET /", indexHandler)
 	r.HandleFunc("GET /watch", watchHandler)
 	r.HandleFunc("GET /shorts/{videoID}", shortHandler)
 	r.HandleFunc("GET /proxy/{videoID}", proxyHandler)
+	r.HandleFunc("GET /sub/{videoID}/{language}", subHandler)
 	r.HandleFunc("GET /refresh/{videoID}", refreshHandler)
 	r.HandleFunc("GET /cache", cacheHandler)
 	r.HandleFunc("GET /{videoID}", shortHandler)

@@ -6,7 +6,7 @@ toolchain go1.23.3
 
 require (
 	github.com/birabittoh/myks v0.0.2
-	github.com/birabittoh/rabbitpipe v0.0.7
+	github.com/birabittoh/rabbitpipe v0.0.8
 	github.com/joho/godotenv v1.5.1
 	github.com/sirupsen/logrus v1.9.3
 	golang.org/x/time v0.8.0

@@ -2,6 +2,8 @@ github.com/birabittoh/myks v0.0.2 h1:EBukMUsAflwiqdNo4LE7o2WQdEvawty5ewCZWY+IXSU=
 github.com/birabittoh/myks v0.0.2/go.mod h1:klNWaeUWm7TmhnBHBMt9vALwCHW11/Xw1BpCNkCx7hs=
 github.com/birabittoh/rabbitpipe v0.0.7 h1:QSp/2DZSytCDeWf/o8dFSMkxjuZGwiQid7v/yjpfA00=
 github.com/birabittoh/rabbitpipe v0.0.7/go.mod h1:6cEDb0WpwrRm2vt5IO3s2gPjzhZZLP7gYx+l9e3gx1k=
+github.com/birabittoh/rabbitpipe v0.0.8 h1:rBcAUBFLxPp5FXp4N5H/CscGg71anBz1IkUnWsxgfCk=
+github.com/birabittoh/rabbitpipe v0.0.8/go.mod h1:6cEDb0WpwrRm2vt5IO3s2gPjzhZZLP7gYx+l9e3gx1k=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=

@@ -32,6 +32,10 @@ adminUser string
 	adminPass string
 )
 
+func defaultError(w http.ResponseWriter, code int) {
+	http.Error(w, http.StatusText(code), code)
+}
+
 func parseFormat(f rabbitpipe.Format) (res string) {
 	isAudio := f.AudioChannels > 0
 
@@ -73,7 +77,7 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 	err := indexTemplate.Execute(w, nil)
 	if err != nil {
 		logger.Error("Failed to fill index template.")
-		http.Error(w, err.Error(), http.StatusInternalServerError)
+		defaultError(w, http.StatusInternalServerError)
 		return
 	}
 }
@@ -146,6 +150,27 @@ h.Set("Status", "200")
 	h.Set("Content-Type", "video/mp4")
 	h.Set("Content-Length", strconv.FormatInt(vb.Length, 10))
 	io.Copy(w, vb.Buffer)
+}
+
+func subHandler(w http.ResponseWriter, r *http.Request) {
+	videoID := r.PathValue("videoID")
+	language := r.PathValue("language")
+
+	captions, err := invidious.RP.GetCaptions(videoID, language)
+	if err != nil {
+		logger.Error("Failed to get captions: ", err)
+		defaultError(w, http.StatusNotFound)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/vtt")
+	w.Header().Set("Content-Length", strconv.Itoa(len(captions)))
+
+	_, err = w.Write(captions)
+	if err != nil {
+		defaultError(w, http.StatusInternalServerError)
+		return
+	}
 }
 
 func downloadHandler(w http.ResponseWriter, r *http.Request) {

@@ -42,6 +42,9 @@ <main class="container" style="max-width: 35rem">
         {{ if gt (len .FormatStreams) 0 }}
         <video style="width: 100%" autoplay controls>
             <source src="{{ (index .FormatStreams 0).URL }}" type="video/mp4" />
+            {{ range .Captions }}
+            <track kind="subtitles" label="{{ .Label }}" src="/sub/{{ $.VideoID }}/{{ .Label }}" srclang="{{ .LanguageCode }}" />
+            {{ end }}
         </video>
         {{ end }}
         <h2>{{ .Title }}</h2>