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ReferenceMKPlayer customization

CSS customization

Bitmovin UI renders playback controls and overlays as DOM elements with predefined CSS class names (for example, .bmpui-seekbar and .bmpui-ui-uicontainer).

Using CSS overrides lets you:

  • Customize colors, fonts, and sizes

  • Align playback controls with your brand

  • Improve accessibility and responsive behavior

  • Change visual behavior at runtime

Example: larger seekbar and branded colors

/* Big seekbar font size */
.bmpui-seekbar.bigseek > * {
  font-size: 3em;
}
/* Seekbar backdrop colors */
.bmpui-seekbar-backdrop.green {
  background-color: #034728 !important;
}

This makes seekbar elements larger and changes the seekbar backdrop color.

Example: base font defaults

.bmpui-ui-uicontainer {
  font-family: "Roboto";
  font-size: 16px;
}

This sets a consistent font baseline across UI elements. You can also update label and button text styling to signal UI states such as on/off transitions.

UIConfig: Bitmovin UIConfig interface

  • Bitmovin UI modules: Bitmovin UI modules

  • UI factory variants: Bitmovin UI factory docs

  • CSS class reference: Bitmovin CSS class reference