H.264 is a popular video compression standard to compress a digital video. It is also known as MPEG-4 Part10 or Advanced Video Coding (MPEG-4 AVC). H.264 uses the block-wise approach for compressing a video where the block size is defined as 16 x 16 and such block is called a macro block. H.264 supports two types of encoding: Context Adaptive Variable Length Coding (CAVLC) and Context Adaptive Binary Arithmetic Coding (CABAC). It implements baseline profile and uses CAVLC for entropy encoding. Also, the IP supports encoding of I and P frames upto 4K resolution.
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Features and Benefits
- Video Compression Capabilities :
- Supports compression up to 4K resolution (3840 × 2160) at 60 fps
- Implements compression on YCbCr 4:2:0 video format
- Accepts input in YCbCr 4:2:2 video format
- Supports 8-bit depth for each color component: Y, Cb, Cr
- Output Format:
- Generates ITU-T H.264 Annex B compliant NAL byte stream output
- Performance and Efficiency:
- Processes at 1 pixel per clock per slice
- Supports up to 4 slices for parallel compression
- Achieves minimal latency:
- 252 µs for full HD (equivalent to 17 horizontal lines)
- Runtime Configurability:
- User-configurable QP (Quality Parameter) during runtime
- Dynamic configuration of:
- Number of P-frames per I-frame
- Skip block threshold value
- System Integration:
- Standalone operation — no CPU or processor assistance required
- Interfaces with external memory via video arbiter interface for DDR frame buffer access
Documentation
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| H.264 Encoder IP User Guide | Download |