I.e. don't do anything on already released frames.
---
libavcodec/pthread.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
index cd330fc..751fca8 100644
--- a/libavcodec/pthread.c
+++ b/libavcodec/pthread.c
@@ -981,6 +981,9 @@ void ff_thread_release_buffer(AVCodecContext *avctx,
AVFrame *f)
PerThreadContext *p = avctx->thread_opaque;
FrameThreadContext *fctx;
+ if (!f->data[0])
+ return;
+
if (!(avctx->active_thread_type&FF_THREAD_FRAME)) {
avctx->release_buffer(avctx, f);
return;
--
1.7.10.4
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