diff --git a/libavformat/ipmovie.c b/libavformat/ipmovie.c index 4bd3580bc2dba0bf55869050d5fce539b16fb7e7..bd5ec300165f63a326a91d254713ce9e0204a63c 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) {