• One :HDMI Ethernet Channel,HEC

HDMI1.4 version of the data lines will add a data channel to support high-speed bi-directional communication. Support the function of interconnected devices to send and receive data via Fast Ethernet to meet any IP-based application.
HDMI Ethernet Channel will allow an Internet-based HDMI to HDMI devices(HDMI splitter) and other devices to share Internet access, without having to access a separate Ethernet cable. The new function will also provide a connection platform that allows sharing of content between HDMI devices.

• Two: Audio Return Channel,ARC

The channel can be reduced and the audio transmission up to the number of cables required for processing and playback. In high-definition television directly receiving audio and video content to the situation under the new HDTV channel allows the audio through the HDMI cable directly sent to the A / V Receivers, without additional one cable.

• Three:3D Over HDMI

The new specification will define common 3D formats and HDMI device resolution, complete the home 3D system input and output partially standardized, supports up to two 1080p resolution video streams.

• Four: Support 4K × 2K resolution

HDMI devices to support HD resolution will reach 4K × 2K, four times the current to 1080p, and numerous digital home theater can be similarly resolution to transfer content.
The specific format: 3840 × 2160 24Hz/25Hz/30Hz; 4096 × 2160 24Hz.

• Five: to expand support for color spaces

HDMI technology designed specifically for digital cameras will support the design to the color space, including sYCC601, AdobeRGB, AdobeYCC601, may appear more accurate color fidelity when connected to a digital camera.

• Six: Micro HDMI mini Interface

SHK Micro HDMI interfaces than now in 19-pin interfaces typically about 50% smaller, portable devices can bring in up to 1080p resolution support.

• Seven: Automotive ConnectionSystem,ACS

One high-definition content delivery vehicle designed to cable specifications, to avoid the heat, vibration, noise and other automotive interior common environmental influence, also provides for vehicle manufacturers to send high-definition content in the car it is really a viable solution plan.
There will be accompanied by a new HDMI1.4 standardized data lines, such as it use HDMI Ethernet Channel, consumers are required to purchase support HDMI Ethernet regulate or high-speed cable to connect external devices and automotive systems also require a new HDMI HD HDMI car line.

• More simply

1.3 is also divided into several types 1.3,1.3 a, 1.3b and so on.
1.4    In general, the bandwidth greater than 1.3, so the function better, mainly more of the following features:
1, Ethernet channel
2, Audio Return Channel
3,3 D function
4,4 kx2k resolution support

For example, more than 1.4, you can use hdmi LAN feature, if your amplifier connected to the TV via HDMI (video and audio signals to the amplifier input to the TV), while the sound of the TV can be put (eg from STB) via the same HDMI returned to the amplifier. If the line is 1.3, you must connect a separate audio cable.
1.3 and 1.4 to the naked eye, it is difficult, the line must be cut open to see. In general, previously bought last year, mostly 1.3. If you do not have these features, 1.3 suffice.