doc/examples/transcoding: check encoder before using it

Fixes null pointer exception

Michael Niedermayer committed 11 years ago

Commit bde27e11 parent cbf09541 file · +4 −0Browse files

Unified · Split

@@ -116,6 +116,10 @@ static int open_output_file(const char *filename) · 115 unmodified lines
116	116	\|\| dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
117	117	/* in this example, we choose transcoding to same codec */
118	118	encoder = avcodec_find_encoder(dec_ctx->codec_id);
	119	+ if (!encoder) {
	120	+ av_log(NULL, AV_LOG_FATAL, "Neccessary encoder not found\n");
	121	+ return AVERROR_INVALIDDATA;
	122	+ }
119	123
120	124	/* In this example, we transcode to same properties (picture size,
121	125	* sample rate etc.). These properties can be changed for output

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