switch (chunk_type) {
case SND1_TAG:
/* unpacked size is stored in header */
- pkt->duration = AV_RL16(pkt->data) / wsvqa->channels;
+ if(pkt->data)
+ pkt->duration = AV_RL16(pkt->data) / wsvqa->channels;
break;
case SND2_TAG:
/* 2 samples/byte, 1 or 2 samples per frame depending on stereo */