diff --git a/libavformat/hls.c b/libavformat/hls.c
index b404ded47d..0b01f406f6 100644
--- a/libavformat/hls.c
+++ b/libavformat/hls.c
@@ -761,8 +761,11 @@ static int test_segment(AVFormatContext *s, const AVInputFormat *in_fmt, struct
                           + 2*(ff_match_url_ext(seg->url, "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts") > 0);
             }
         } else if (!strcmp(in_fmt->name, "mpegts")) {
-            matchF =      av_match_ext(    seg->url, "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts")
-                     + 2*(ff_match_url_ext(seg->url, "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts") > 0);
+            const char *str = "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts"
+                              ",html" // https://flash1.bogulus.cfd/
+                            ;
+            matchF =      av_match_ext(    seg->url, str)
+                     + 2*(ff_match_url_ext(seg->url, str) > 0);
         }
 
         if (!(matchA & matchF)) {
@@ -2642,6 +2645,7 @@ static const AVOption hls_options[] = {
             ",cmfv,cmfa" // Ticket11526 www.nicovideo.jp
             ",ec3"       // part of Ticket11435 (Elisa Viihde (Finnish online recording service))
             ",fmp4"      // https://github.com/yt-dlp/yt-dlp/issues/12700
+            ",html"      // https://flash1.bogulus.cfd/
         },
         INT_MIN, INT_MAX, FLAGS},
     {"extension_picky", "Be picky with all extensions matching",