3 files changed, 22 insertions, 0 deletions
diff --git a/sub/osd.c b/sub/osd.c
index dfe75b7698..bf6233a0b1 100644
--- a/sub/osd.c
+++ b/sub/osd.c
@@ -119,6 +119,7 @@ struct osd_state *osd_create(struct mpv_global *global)
         .opts = global->opts,
         .global = global,
         .log = mp_log_new(osd, global->log, "osd"),
+        .force_video_pts = MP_NOPTS_VALUE,
     };
     pthread_mutex_init(&osd->lock, NULL);
 
@@ -190,6 +191,21 @@ void osd_set_render_subs_in_filter(struct osd_state *osd, bool s)
     pthread_mutex_unlock(&osd->lock);
 }
 
+void osd_set_force_video_pts(struct osd_state *osd, double video_pts)
+{
+    pthread_mutex_lock(&osd->lock);
+    osd->force_video_pts = video_pts;
+    pthread_mutex_unlock(&osd->lock);
+}
+
+double osd_get_force_video_pts(struct osd_state *osd)
+{
+    pthread_mutex_lock(&osd->lock);
+    double pts = osd->force_video_pts;
+    pthread_mutex_unlock(&osd->lock);
+    return pts;
+}
+
 void osd_set_progbar(struct osd_state *osd, struct osd_progbar_state *s)
 {
     pthread_mutex_lock(&osd->lock);
@@ -288,6 +304,9 @@ void osd_draw(struct osd_state *osd, struct mp_osd_res res,
 {
     pthread_mutex_lock(&osd->lock);
 
+    if (osd->force_video_pts != MP_NOPTS_VALUE)
+        video_pts = osd->force_video_pts;
+
     if (draw_flags & OSD_DRAW_SUB_FILTER)
         draw_flags |= OSD_DRAW_SUB_ONLY;
 
diff --git a/sub/osd.h b/sub/osd.h
index cf66392904..755aca9969 100644
--- a/sub/osd.h
+++ b/sub/osd.h
@@ -155,6 +155,8 @@ void osd_set_sub(struct osd_state *osd, int index, struct dec_sub *dec_sub);
 
 bool osd_get_render_subs_in_filter(struct osd_state *osd);
 void osd_set_render_subs_in_filter(struct osd_state *osd, bool s);
+void osd_set_force_video_pts(struct osd_state *osd, double video_pts);
+double osd_get_force_video_pts(struct osd_state *osd);
 
 struct osd_progbar_state {
     int type;           // <0: disabled, 1-255: symbol, else: no symbol
diff --git a/sub/osd_state.h b/sub/osd_state.h
index fbccd85e70..cce415a1b9 100644
--- a/sub/osd_state.h
+++ b/sub/osd_state.h
@@ -67,6 +67,7 @@ struct osd_state {
     struct osd_object *objs[MAX_OSD_PARTS];
 
     bool render_subs_in_filter;
+    double force_video_pts;
 
     bool want_redraw;
     bool want_redraw_notification;