msdana, I think I know what caused it.
According to your short code , you didn’t use height attribute.
[hana-flv-player video="https://www.countryroadscc.com/wp-content/uploads/2012/05/spvideo/summitpoint_2012_002.flv" width="320" description="Car Show" player="3" autoload="true" autoplay="false" loop="false" autorewind="true" /]
If height attribute is not defined in the [hana-flv-player] shortcode, the default value of height is used. You can set this in the settings menu.
Try setting the default height to empty value. When the default height is also empty ,the height will be automatically calculated all the time.
Here is a screenshot image.
https://wpmarketing.org/hana-flv-setting.png