Kaltura has a plethora of tutorials on their website as well as many YouTube tutorials to help walk you through anything you need to work on in the program.
Kaltura Captioning
Editing Captioning
Best Practices
Align text left
Use Sans Serif fonts (Arial, Helvetica, or Verdana)
22 pt font
No more than 32 characters per line
Font color and background must pass AA Color Contrast Ratio (large text=14pt and larger)
Do not use color as the only way to convey meaning
Captions (Prerecorded) are provided for all prerecorded audio content in synchronized media, except when the media is a media alternative for text and is clearly labeled as such WCAG 2.0 SC 1.2.2 (Links to an external site.)
Examples of Inaccessibility:
Text alternatives that are not actually alternatives (i.e. provided text is not descriptive)
Text alternatives that are inaccurate or incomplete
Captions omitting dialogue or important sound effects
Captions do not present all the information
Synchronized media provided as alternative to text is not labeled as such
