Version 1.3
HDMI 1.3 was released June 22, 2006 and increased the single-link bandwidth to 340 MHz (10.2 Gbit/s).[2][43][129] It optionally supports deep color, with 30-bit, 36-bit and 48-bit xvYCC, sRGB, or YCbCr, compared to 24-bit sRGB or YCbCr in previous HDMI versions. It also optionally supports output of Dolby TrueHD and DTS-HD Master Audio streams for external decoding by AV receivers.[130] It incorporates automatic audio syncing (audio video sync) capability.[43] It defined cable Categories 1 and 2, with Category 1 cable being tested up to 74.25 MHz and Category 2 being tested up to 340 MHz.[68] It also added the new type C Mini connector for portable devices.[58][131]
HDMI 1.3a was released on November 10, 2006 and had Cable and Sink modifications for type C, source termination recommendations, and removed undershoot and maximum rise/fall time limits.[2] It also changed CEC capacitance limits, clarified sRGB video quantization range, and CEC commands for timer control were brought back in an altered form, with audio control commands added.[2] It also added support for optionally streaming SACD in its bitstream DST format rather than uncompressed raw DSD like from HDMI 1.2 onwards.[2]
HDMI 1.3b, 1.3b1 and 1.3c were released on March 26, 2007, November 9, 2007, and August 25, 2008 respectively. They do not introduce differences on HDMI features, functions, or performance,[132] but only describe testing for products based on the HDMI 1.3a specification regarding HDMI compliance (1.3b [121][133][134]), the HDMI type C Mini connector (1.3b1 [121][133][134]) and active HDMI cables (1.3c [75][135]).[132]
Version 1.4
HDMI 1.4 with Audio Return Channel
HDMI 1.4 was released on May 28, 2009, and the first HDMI 1.4 products were available in the second half of 2009.[62][136] HDMI 1.4 increases the maximum resolution to 4K × 2K, i.e. 3840 × 2160p (Quad HD) at 24 Hz/25 Hz/30 Hz or 4096 × 2160p at 24 Hz (which is a resolution used with digital theaters); an HDMI Ethernet Channel (HEC), which allows for a 100 Mbit/s Ethernet connection between the two HDMI connected devices so they can share an Internet connection;[82] and introduces an Audio Return Channel (ARC),[81] 3D Over HDMI, a new Micro HDMI Connector, expanded support for color spaces, with the addition of sYCC601, Adobe RGB and Adobe YCC601; and an Automotive Connection System.[62][137][138][139][140] HDMI 1.4 supports several stereoscopic 3D formats including field alternative (interlaced), frame packing (a full resolution top-bottom format), line alternative full, side-by-side half, side-by-side full, 2D + depth, and 2D + depth + graphics + graphics depth (WOWvx),[59][141][142] with additional top/bottom formats added in version 1.4a . HDMI 1.4 requires that 3D displays support the frame packing 3D format at either 720p50 and 1080p24 or 720p60 and 1080p30.[142] High Speed HDMI 1.3 cables can support all HDMI 1.4 features except for the HDMI Ethernet Channel.[59][141][142]
HDMI 1.4a was released on March 4, 2010 and adds two additional mandatory 3D formats for broadcast content, which was deferred with HDMI 1.4 in order to see the direction of the 3D broadcast market.[143][144] HDMI 1.4a has defined mandatory 3D formats for broadcast, game, and movie content.[143] HDMI 1.4a requires that 3D displays support the frame packing 3D format at either 720p50 and 1080p24 or 720p60 and 1080p24, side-by-side horizontal at either 1080i50 or 1080i60, and top-and-bottom at either 720p50 and 1080p24 or 720p60 and 1080p24.