The following is an abbreviated list of the features supported in the VX3000S video codec. For a comprehensive list, please contact Agora Labs directly.
| Codec Features | |
| Syntax | ITU-T H.261 March 1993 |
| Packetization | RFC 2032 |
| Maximum Picture Size | CIF |
| Callback Support | Yes |
| Encode Rate Control | Yes |
| Encode Advanced Picture Modeling (I & P) | Yes |
| Encode Advanced Rate Control | Yes |
| Encode Frame Capture & Color Conversion | Yes |
| Input Picture Size Interpolation | 1:1, 1:2, 2:1, 5:3 |
| Input Picture Noise Reduction | Yes |
| Decode Picture Extraction API (RGB & YUV) | Yes |
| Output Picture Size Interpolation | 1:1, 1:2 |
| x86 Real-Time Speed Optimization | Yes |
| SIMD Support (MMX, SSE, SSE2) | Yes |
| Multiple Picture Segment Overlay | Yes |
| Annex D (Still Pictures) | Yes |
| Annex J (De-blocking Filter Mode) | Yes |