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%.
| 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 |