Kaltura Rich Media Streaming Step For content in My Media Find your media, then select the Edit pencil icon on the right side of the screen. Step For content in Media Gallery Select the Options button (3 dots) on the right side of the video thumbnail. Then select the Edit pencil icon that appears. Step Select the Captions tab on the video page, then select the Upload captions file button. Step Select your caption file (which should end in .srt or .dfxp), select its language, then click Save. Step The captions should now appear in the player when you select the CC button.