iqa: Add a `mode` property
This property currently only supports a 'strict' that checks that all the input streams have the exact same number of frames.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
This property currently only supports a 'strict' that checks that all the input streams have the exact same number of frames.