int mov_write_stco_tag(ByteIOContext *pb, MOVTrack* track)
static int mov_write_stco_tag(ByteIOContext *pb, MOVTrack* track)
int mov_write_stco_tag(ByteIOContext *pb, MOVTrack* track){    int i;    put_be32(pb, 16+track->entry*4); /* size */    put_tag(pb, "stco");    put_be32(pb, 0); /* version & flags */    put_be32(pb, track->entry); /* entry count */    for (i=0; i<track->entry; i++) {        int cl = i / MOV_INDEX_CLUSTER_SIZE;        int id = i % MOV_INDEX_CLUSTER_SIZE;        put_be32(pb, track->cluster[cl][id].pos);    }    return 16+track->entry*4;}