diff --git a/filters/f_swresample.c b/filters/f_swresample.c
index 39efe173bf..2bb1e4cd02 100644
--- a/filters/f_swresample.c
+++ b/filters/f_swresample.c
@@ -668,12 +668,13 @@ static void process(struct mp_filter *f)
 
     if (p->input && out.type) {
         mp_pin_in_write(f->ppins[1], out);
-        mp_pin_out_request_data(f->ppins[0]);
     } else if (!p->input && out.type) {
         mp_pin_in_write(f->ppins[1], out);
         mp_pin_out_repeat_eof(f->ppins[0]);
     } else if (!p->input) {
         mp_pin_in_write(f->ppins[1], MP_EOF_FRAME);
+    } else {
+        mp_filter_internal_mark_progress(f); // try to consume more input
     }
 
     if (p->input && !mp_aframe_get_size(p->input))