Upon tapping the play button for a video in Safari or the Photos app, iOS automatically loads the video in its native media player interface. This media player doesn’t apply to all apps, such as those with proprietary alternatives like the official YouTube app, but it applies almost everywhere else.
Jailbreakers who have an interest in customizing iOS’ default media player are likely to show an interest in a new and free jailbreak tweak dubbed CustoMedia by iOS developer gamehacker080, as it permits the end user to not only colorize the native media player, but also to adjust its behavior in several different ways.