From 6b88fc9e3ab142b886797b078125d2a0304030ab Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Tue, 27 Feb 2018 08:25:14 -0500
Subject: [PATCH] avoid segfault when an encoder could not be opened

closes #473

Change-Id: Ie800c3682be58ab93178bceb9e952f26cb0d0e25
---
 lib/codeclib.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/codeclib.c b/lib/codeclib.c
index e286be23d..ac1557b5d 100644
--- a/lib/codeclib.c
+++ b/lib/codeclib.c
@@ -1006,6 +1006,9 @@ static int avc_encoder_input(encoder_t *enc, AVFrame **frame) {
 	int keep_going = 0;
 	int got_packet = 0;
 
+	if (!enc->u.avc.avcctx)
+		return -1;
+
 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 36, 0)
 	if (*frame) {
 		int ret = avcodec_send_frame(enc->u.avc.avcctx, *frame);