def __init__(self, url, uuid, timestamp, apikey=None, security=None):
self._url = url<EOL>self._apikey = apikey<EOL>self._security = security<EOL>self._uuid = uuid<EOL>self._timestamp = timestamp<EOL>
AudioVisual instances provide a bridge between transform and filelinks, and allow
you to check the status of a conversion and convert to a Filelink once completed

```python
from filestack import Client

client = Client("<API_KEY>")
filelink = client.upload(filepath='path/to/file/doom.mp4')
av_convert= filelink.av_convert(width=100, height=100)
while av_convert.status != 'completed':
    print(av_convert.status)

filelink = av_convert.to_filelink()
print(filelink.url)
```