From bde27e1e617dfeb3c026f530f48a77f5ed8aa2ea Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 4 Dec 2014 18:58:38 +0100
Subject: [PATCH] doc/examples/transcoding: check encoder before using it
Fixes null pointer exception
Found-by: stoupeace
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
doc/examples/transcoding.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/doc/examples/transcoding.c b/doc/examples/transcoding.c
index 759c628e937..55724616164 100644
--- a/doc/examples/transcoding.c
+++ b/doc/examples/transcoding.c
@@ -116,6 +116,10 @@ static int open_output_file(const char *filename)
|| dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
/* in this example, we choose transcoding to same codec */
encoder = avcodec_find_encoder(dec_ctx->codec_id);
+ if (!encoder) {
+ av_log(NULL, AV_LOG_FATAL, "Neccessary encoder not found\n");
+ return AVERROR_INVALIDDATA;
+ }
/* In this example, we transcode to same properties (picture size,
* sample rate etc.). These properties can be changed for output
--
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