X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=sidebyside;f=libavcodec%2Fqtrleenc.c;h=6669c1302f934eff1d35f8f533994ca5c63b48d5;hb=a11aa5f3ed7ee4d2385a7b725d43f6070d790b4c;hp=cdd864bf820953cf22e6b389583ee9d95c0829a7;hpb=2ac399d7faa5ac80088715780769522d1141b549;p=ffmpeg

diff --git a/libavcodec/qtrleenc.c b/libavcodec/qtrleenc.c
index cdd864bf820..6669c1302f9 100644
--- a/libavcodec/qtrleenc.c
+++ b/libavcodec/qtrleenc.c
@@ -259,9 +259,10 @@ static void qtrle_encode_line(QtrleEncContext *s, const AVFrame *p, int line, ui
         /* These bulk costs increase every iteration */
         lowest_bulk_cost += s->pixel_size;
         sec_lowest_bulk_cost += s->pixel_size;
-
-        this_line -= s->pixel_size;
-        prev_line -= s->pixel_size;
+        if (this_line >= p->data[0] + s->pixel_size)
+            this_line -= s->pixel_size;
+        if (prev_line >= s->previous_frame->data[0] + s->pixel_size)
+            prev_line -= s->pixel_size;
     }
 
     /* Good! Now we have the best sequence for this line, let's output it. */