framerate property
Ignore this setting unless your input captions format is SCC. To have the service compensate for differing frame rates between your input captions and input video, specify the frame rate of the captions file. Specify this value as a fraction, using the settings Framerate numerator (framerateNumerator) and Framerate denominator (framerateDenominator). For example, you might specify 24 / 1 for 24 fps, 25 / 1 for 25 fps, 24000 / 1001 for 23.976 fps, or 30000 / 1001 for 29.97 fps.
Implementation
final CaptionSourceFramerate? framerate;