H.264 Video Code FPGA Solution

H.264 Video Code is a digital video compression standard, which is a JVT (Joint Video Team) combined with VCEG (ISO / IEC MOVING Experts Group) in March 2003. release. The main objective of the H.264 standard is under the same conditions of fidelity, improve coding efficiency. This is a contradiction, since the required image distortion, the number of bits transmitted on the big picture, the network bandwidth in certain circumstances, an image signal transmission speed is fast, so that only improve the coding efficiency can be achieved. Silver billion electronic logic-based language written in the form of IP cores, running on FPGA devices, the use of FPGA-based solutions as the core FPGA devices to achieve H.264 codec IP core, this is a pure hardware solution solution, start-up time can be ignored, the codec delay to a fixed delay, in certain optimization, the delay for all solutions in the minimum, the following specific features: 1. Support various resolutions Flexible configuration video resolution, the maximum resolution supported by the FPGA depending on the size and resources, a plurality of parallel processing by the core, can easily support such as 4K or high resolution, the maximum resolution supported by the single core is 4K. To support non-standard resolution, for example, 1024 * 1024 and the like (for compatibility with the industry standard, resolution is generally a multiple of 32, such a resolution is not a multiple of 32, 32 need filled multiples) 2. Support a variety of frame rates The frame rate is determined by the resolution, the largest single-core can support 4K / 30fps, 1080P / 120fps. It can be customized to provide a frame rate available hardware resources and customer needs, such as 960P / 120fps and so on. 3. low codec delay In the case where the 1080P / 30fps, coding delay is about 0.5ms, decoding delay 23ms or less, from the encoded transport stream, the decoding process consisting of a complete, delay 70ms or less. 4. occupies a small FPGA resources Single-core resources in occupied, LUT occupy up to about more than 29,000 other resources occupancy rate, than a small proportion of LUT. The flexible rate control For specific scenes, for example, bandwidth limited, by dynamically adjusting the QP value (image quality), under the control of the stream bandwidth requirements. Conversely bandwidth is not the decisive factor, it can stabilize QP value (image quality), in order to achieve better image quality 6. Long GOP support The maximum possible 256 was a coded I frame, cut the code stream bandwidth peak, remains excellent fault tolerance. 7. customization strong Codes can be optimized according to the actual needs, for example to provide localized the QP (image quality) enhancement customized modifications. 8. Applications Ø at low bandwidth, low latency spaceborne / airborne / missile / vehicle video data link; Ø requiring ultra-high resolution, ultra-low latency video surveillance system; Ø massive video data compression, storage and the like.