Visible to Intel only — GUID: aim1488530470790
Ixiasoft
Visible to Intel only — GUID: aim1488530470790
Ixiasoft
3.1.5. Clocked Video and 4:2:0 Chroma Subsampling
When processing 4:2:0 streams, you need to use chroma resampler to convert to 4:2:2 or 4:4:4 before or after any video processing is performed. The video streams can be converted back to 4:2:0 for transmission from the pipeline with another chroma resampler.
The connectivity cores (SDI, HDMI and DisplayPort) present data at their interfaces in accordance with their respective standards, not in line with the AV-ST mappings. Before the data is processed, it must be arranged in an Avalon-ST compliant manner. The input and output preparation areas present a gray area in the pipeline where video packets are Avalon-ST video compliant but the arrangement of data within the packet may not match the expectations of the processing blocks.