on both Freeview satellite and UHF broadcasts, this decision was made based on the TVNZ practice of using this format on only DVB UHF broadcasts (aka Freeview HD). This made composite video connected TVs incapable of decoding the captions on their own. Also, these pre-rendered subtitles use classic caption style opaque backgrounds with an overly large font size and obscure the picture more than the more modern, partially transparent backgrounds. Digital television standard captioning improvements The CEA-708 specification provides for dramatically improved captioning An enhanced character set with more accented letters and non-Latin letters, and more special symbols Viewer-adjustable text size (called the "caption volume control" in the specification), allowing individuals to adjust their TVs to display small, normal, or large captions More text and background colors, including both transparent and translucent backgrounds to optionally replace the big black block More text styles, including edged or drop shadowed text rather than the letters on a solid background More text fonts, including monospaced and proportional spaced, serif and sans-serif, and some playful cursive fonts Higher bandwidth, to allow more data per minute of video More language channels, to allow the encoding of more independent caption streams As of 2009, most closed captioning for digital television environments is done using tools designed for analog captioning (working to the CEA-608 NTSC specification rather than the CEA-708 ATSC specification). The captions are then run through transcoders made by companies like EEG Enterprises or Evertz, which convert the analog Line 21 caption format to the digital format. This means that none of the CEA-708 features are used unless they were also contained in CEA-608. Uses in other media DVDs and Blu-ray Discs NTSC DVDs may carry closed captions in data packets of the MPEG-2 video streams inside of the Video-TS folder. Once played out of the analog outputs of a set top DVD player, the caption data is converted to the Line 21 format. They are output by the player to the composite video (or an available RF connector) for a connected TV's built-in decoder or a set-top decoder as usual. They can not be output on S-Video or component video outputs due to the lack of a colorburst signal on line 21. (Actually, regardless of this, if the DVD player is in interlaced rather than progressive mode, closed captioning will be displayed on the TV over component video input if the TV captioning is