+--- a/libavcodec/encode.c
++++ b/libavcodec/encode.c
+@@ -320,7 +320,7 @@
+ }
+
+ if (!frame->buf[0]) {
+- if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
++ if (avci->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
+ avci->frame_thread_encoder))
+ return AVERROR_EOF;
+
+@@ -339,8 +339,10 @@
+ ret = ff_encode_encode_cb(avctx, avpkt, frame, &got_packet);
+ }
+
+- if (avci->draining && !got_packet)
++ if (avci->draining && !got_packet) {
++ fflush(stderr);
+ avci->draining_done = 1;
++ }
+
+ return ret;
+ }
+@@ -515,10 +517,16 @@
+ if (avci->draining)
+ return AVERROR_EOF;
+
+- if (avci->buffer_frame->buf[0])
++ if (avci->buffer_frame->buf[0]) {
++ if (!frame) {
++ fflush(stderr);
++ av_frame_unref(avci->buffer_frame);
++ }
+ return AVERROR(EAGAIN);
++ }
+
+ if (!frame) {
++ fflush(stderr);
+ avci->draining = 1;
+ } else {
+ ret = encode_send_frame_internal(avctx, frame);