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-rw-r--r--libavformat/ipmovie.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/ipmovie.c b/libavformat/ipmovie.c
index 4bd3580bc2..bd5ec30016 100644
--- a/libavformat/ipmovie.c
+++ b/libavformat/ipmovie.c
@@ -116,6 +116,11 @@ static int load_ipmovie_packet(IPMVEContext *s, AVIOContext *pb,
int chunk_type;
if (s->audio_chunk_offset) {
+ if (s->audio_type == CODEC_ID_NONE) {
+ av_log(NULL, AV_LOG_ERROR, "Can not read audio packet before"
+ "audio codec is known\n");
+ return CHUNK_BAD;
+ }
/* adjust for PCM audio by skipping chunk header */
if (s->audio_type != CODEC_ID_INTERPLAY_DPCM) {