dv: use AVStream.index instead of abusing AVStream.id

libavformat/dv.c

@@ -372,7 +372,7 @@ int avpriv_dv_produce_packet(DVDemuxContext *c, AVPacket *pkt,
     pkt->data         = buf;
     pkt->size         = size;
     pkt->flags       |= AV_PKT_FLAG_KEY;
-    pkt->stream_index = c->vst->id;
+    pkt->stream_index = c->vst->index;
     pkt->pts          = c->frames;
 
     c->frames++;