Contiguous Memory Access Size Requirements - 1.0 English

H.264/H.265 Video Decode Unit Solutions LogiCORE IP Product Guide (PG414)

Document ID
PG414
Release Date
2022-07-08
Version
1.0 English

The following table contains theoretical Contiguous Memory Access (CMA) buffer requirements for the VDU based on resolution and format. The sizes below correspond to one instance of the decoder. Multiply these by the number of streams for multistream use cases. Other elements such as kmssink typically increase the CMA requirements by an additional 10% to 15%.

Table 1. VDU Decoder Instance CMA Requirements
Resolution 4:2:2

10- bit AVC

4:2:2

10- bit HEVC

4:2:2

8- bits AVC

4:2:2

8- bits HEVC

4:2:0

10- bit AVC

4:2:0

10- bit HEVC

4:2:0

8- bit AVC

4:2:0

8- bit HEVC

3840×2160 (MB) 665 582 597 513 524 466 473 414
1920×1080 (MB) 258 214 232 190 208 167 188 148
1280×720 (MB) 137 104 120 87 144 82 101 69