From a7f41dcefa6660d2f0173d2a0959373061d39194 Mon Sep 17 00:00:00 2001
From: nick black <dankamongmen@gmail.com>
Date: Sat, 5 Jun 2021 22:59:23 -0400
Subject: [PATCH] ffmpeg_resize: check for owndata before frame_unref #1718

---
 src/lib/visual-details.h | 1 +
 src/media/ffmpeg.c       | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/lib/visual-details.h b/src/lib/visual-details.h
index fda6efeed..219b0c030 100644
--- a/src/lib/visual-details.h
+++ b/src/lib/visual-details.h
@@ -30,6 +30,7 @@ typedef struct ncvisual {
 
 static inline void
 ncvisual_set_data(ncvisual* ncv, void* data, bool owned){
+//fprintf(stderr, "replacing %p with %p (%u -> %u)\n", ncv->data, data, ncv->owndata, owned);
   if(ncv->owndata){
     if(data != ncv->data){
       free(ncv->data);
diff --git a/src/media/ffmpeg.c b/src/media/ffmpeg.c
index 0e158240b..184a6c7f1 100644
--- a/src/media/ffmpeg.c
+++ b/src/media/ffmpeg.c
@@ -526,8 +526,9 @@ int ffmpeg_resize(ncvisual* n, int rows, int cols){
   n->rowstride = sframe->linesize[0];
   n->pixy = rows;
   n->pixx = cols;
-//fprintf(stderr, "SETTING UP RESIZE %p\n", n->data);
-  av_frame_unref(n->details->frame);
+  if(n->owndata){
+    av_frame_unref(n->details->frame);
+  }
   ncvisual_set_data(n, sframe->data[0], true);
   n->details->frame = sframe;
 //fprintf(stderr, "SIZE SCALED: %d %d (%u)\n", n->details->frame->height, n->details->frame->width, n->details->frame->linesize[0]);