diff --git a/player/sub.c b/player/sub.c
index c2a3e80cb3..9ec7ba5e7b 100644
--- a/player/sub.c
+++ b/player/sub.c
@@ -258,13 +258,10 @@ static void reinit_subdec(struct MPContext *mpctx, struct track *track,
 
     struct sh_video *sh_video =
         mpctx->d_video ? mpctx->d_video->header->video : NULL;
-    int w = sh_video ? sh_video->disp_w : 0;
-    int h = sh_video ? sh_video->disp_h : 0;
     float fps = sh_video ? sh_video->fps : 25;
 
     init_sub_renderer(mpctx);
 
-    sub_set_video_res(dec_sub, w, h);
     sub_set_video_fps(dec_sub, fps);
     sub_set_ass_renderer(dec_sub, mpctx->ass_library, mpctx->ass_renderer,
                          &mpctx->ass_lock);
diff --git a/sub/dec_sub.c b/sub/dec_sub.c
index 4450f577c2..4746b8f2cc 100644
--- a/sub/dec_sub.c
+++ b/sub/dec_sub.c
@@ -112,14 +112,6 @@ bool sub_is_initialized(struct dec_sub *sub)
     return r;
 }
 
-void sub_set_video_res(struct dec_sub *sub, int w, int h)
-{
-    pthread_mutex_lock(&sub->lock);
-    sub->init_sd.sub_video_w = w;
-    sub->init_sd.sub_video_h = h;
-    pthread_mutex_unlock(&sub->lock);
-}
-
 void sub_set_video_fps(struct dec_sub *sub, double fps)
 {
     pthread_mutex_lock(&sub->lock);
diff --git a/sub/dec_sub.h b/sub/dec_sub.h
index 117396d9b2..40a882c9f0 100644
--- a/sub/dec_sub.h
+++ b/sub/dec_sub.h
@@ -29,7 +29,6 @@ void sub_destroy(struct dec_sub *sub);
 void sub_lock(struct dec_sub *sub);
 void sub_unlock(struct dec_sub *sub);
 
-void sub_set_video_res(struct dec_sub *sub, int w, int h);
 void sub_set_video_fps(struct dec_sub *sub, double fps);
 void sub_set_ass_renderer(struct dec_sub *sub, struct ass_library *ass_library,
                           struct ass_renderer *ass_renderer,
diff --git a/sub/sd.h b/sub/sd.h
index 2d9207dc48..c73f74e151 100644
--- a/sub/sd.h
+++ b/sub/sd.h
@@ -17,11 +17,6 @@ struct sd {
     void *priv;
 
     struct sh_stream *sh;
-
-    // Video resolution used for subtitle decoding. Doesn't necessarily match
-    // the resolution of the VO, nor does it have to be the OSD resolution.
-    int sub_video_w, sub_video_h;
-
     double video_fps;
 
     // Shared renderer for ASS - done to avoid reloading embedded fonts.