1. Video compression
* Compression standard: Compliance with H.264/AVC Baseline Level 3.0;
* Input signal: ITU-R BT.656, 4:2:2 YUV;
* Real-time multi-channel video encoding, support 4-channel FULL D1 or 16-channel CIF in maximum;
* Support PAL and NTSC systems, support both progress and interleave video;
* Supported resolution: D1 (NTSC 720×480, PAL 720×576)
4CIF (NTSC 704×480, PAL 704×576)
2CIF (NTSC352×480, PAL352×576)
CIF (NTSC 352×240, PAL 352×288)
QCIF (NTSC 176×112, PAL 176×144)
VGA (640×480);
* Rates control: support VBR/CBR modes, bit rate range: 64K-6M bps;
* Support dual-stream real-time compression, main-stream resolution of each channel can be independently configured; sub-stream of each channel supports QCIF and CIF formats and support 16-channel dual-stream in maximum;
* Support adjustable frame rate with range of  PAL: 1/4 fps ~ 25 fps, NTSC: 1/4 fps ~ 30 fps;
* Each encoding channel can be turned on and off independently, the on/off of main/sub stream is also independent;
* Frame rate, bit rate and resolution can be set independently for each encoding channel;
* The structure of GOP(Group of Pictures) is adjustable, supporting the P frames up to 255;
* Video Pre-processing include noise reduction, reduce output code rate and improve video quality;
* Support de-interlace
* Support digital watermark function;
* Support excellent motion detect function which can follow the shape and track of image clearly;
* Provide region mask and focus function which meets the users’ requirements for the special region;
* Provide OSD (On-screen Display) function, each video channel can control the OSD on/off independently; Provide built-in time OSD function shared by each channel and user-defined OSD function with independent configuration of each channel; support maximum 32 characters display, namely 32 English letters, symbols or 16 user-defined lattice Chinese characters (Size: 16×16);
* Preview video output picture can be segmentation output, stepless scalar, can be previewed as 1/4/16 segmentations.
2. Audio
* Real-time audio 8-channel encode, 1-channel decode function;
* Audio Codec standard: IMA-ADPCM, G.711;
* Configurable sample rate: 8~96KHz.
3. Interface
* 16-bit general-purpose parallel interface (HPI), can be directly connected to the CPU such as ARM, MCU, etc., compliance with Intel timing sequence, support Burst mode transmission and asynchronous burst mode;
* 32-bit 33/66 MHz PCI interface, support Master/Slave mode;
* Reused pins for PCI bus and HPI bus, depended on the mode pins. PCI bus shared with HPI bus, decided by setting the pin state when power on reset;
* Four 8-bit ITU-R656 video input interfaces, support 54MHz in maximum. Input 4-channel D1 or 16-channel Half D1/CIF images through time division multiplex access mode, support Techwell video input protocol, can be directly connected to the video output interface of TW2815, TW2864, etc;
* Two I2C interface, support Master mode;
* 8 GPIO pins;
* Five I2S interfaces (pins WS and SCK of four I2S are reused), support multiple audio inputs through one I2S at one time, support I2S protocol of TW2815 and TW2866;
* SDRAM interface, 32bit bus, 32MB capacity with speed up to 166MHz; All digital I/O can be compatible with 5V voltage input.