The video data bytes. If unset, the input video(s) should be
specified via the input_uri. If set, input_uri must be
unset.
Additional video context and/or feature-specific parameters.
Optional. Cloud region where annotation should take place.
Supported cloud regions are: us-east1, us-west1,
europe-west1, asia-east1. If no region is specified,
the region will be determined based on video file location.