This package has been superseded by the go-wunderkammer package. You should use that instead. For example:
$> sqlite3 /usr/local/go-wunderkammer/npg.db \
< /usr/local/go-wunderkammer/schema/sqlite/oembed.db
$> /usr/local/go-smithsonian/bin/emit \
-oembed \
-bucket-uri file:///usr/local/OpenAccess \
metadata/objects/NPG \
| /usr/local/go-wunderkammer/bin/wunderkammer-db \
-database-dsn 'sql://sqlite3/usr/local/go-wunderkammer/npg.db'
$> sqlite3 /usr/local/go-wunderkammer/schema/sqlite/oembed.db
SQLite version 3.32.1 2020-05-25 16:19:56
Enter ".help" for usage hints.
sqlite> SELECT COUNT(url) FROM oembed;
10542