From c251c667487d4f2362d9527afb3c8d69cd089d0b Mon Sep 17 00:00:00 2001
From: karelrooted <karelrooted@gmail.com>
Date: Wed, 1 Nov 2023 11:40:06 +0800
Subject: [PATCH] fix youtube api vtt format subtitle

for fmt=vtt to work the fmt parameter in the original caption api url need to be replaced
---
 src/invidious/routes/api/v1/videos.cr | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/invidious/routes/api/v1/videos.cr b/src/invidious/routes/api/v1/videos.cr
index 1017ac9d..3bead06a 100644
--- a/src/invidious/routes/api/v1/videos.cr
+++ b/src/invidious/routes/api/v1/videos.cr
@@ -136,7 +136,11 @@ module Invidious::Routes::API::V1::Videos
           end
         end
       else
-        webvtt = YT_POOL.client &.get("#{url}&fmt=vtt").body
+        uri = URI.parse(url)
+        query_params = uri.query_params
+        query_params["fmt"] = "vtt"
+        uri.query_params = query_params
+        webvtt = YT_POOL.client &.get(uri.request_target).body
 
         if webvtt.starts_with?("<?xml")
           webvtt = caption.timedtext_to_vtt(webvtt)