To handle the proliferation of bandwidth-intensive HDTV broadcasting, DirecTV rebroadcasts local HDTV stations using the H.264/MPEG-4 AVC codec while employing a newer transmission protocol (DVB-S2) over the newer satellites. This allows DirecTV to squeeze much more HD programming over its satellite signal than was previously feasible using the older MPEG-2 compression and DSS protocol it has been using. This technology will be gradually expanded to the existing satellites as customer equipment is replaced with new MPEG-4-capable receivers.
Receiving the channels encoded in MPEG-4 requires newer receivers, such as the H20 as well as the 5-LNB Ka/Ku dish. DirecTV has contracted with Britain's Pace Micro Technology, Korea's LG Electronics and France's Thomson to manufacture these new receivers. Pace manufactures the DirecTV Plus HD DVR (Model HR20-700, and HR21-700) and LG Electronics offers the Model H20-600 receiver, while Thomson provides the Model H20-100 and HR20-100 DVR receivers. DirecTV has admitted to software issues with some of the H20 receivers and HR20 DVRs, which have been plagued with random problems since they were released in mid-2006. DirecTV regularly released software updates for the HR20 receivers, in an effort to reduce issues to an acceptable level.
DirecTV has phased out its original TiVo-branded HD DVR, the HR10-250, which can only decode the older MPEG-2 signals. All DirecTV-delivered local HDTV stations (outside of the NYC and LA network stations) are encoded in MPEG-4. The HR10-250 cannot receive the MPEG-4 local HDTV stations in these markets but can still receive over-the-air ATSC broadcasts in these markets. After a multi-year hiatus, TiVo and DirecTV are developing a new TiVo enabled HD DVR that will be able to receive/decode DirecTV's current MPEG-4 satellite signals. Originally slated for release in 2010, no official amended launch date has been set. Both DirecTV and TiVo claim development is ongoing and the project has not been canceled.
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