According vMix (https://www.vmix.com/help23/index.htm?SRT.html) here are below the technical/System Requirements for using SRT:
- Windows 10 x64 or higher
- Graphics card with support for HEVC and H264 encoding and decoding.
NVIDIA Quadro P2000 or higher series recommended.
NOTE: NVIDIA GeForce 9xx series or lower should not be used with SRT, and is unsupported.
- When using HEVC on Windows 10, the "HEVC Video Extensions" from the Microsoft Store is required to be installed.
- Progressive video formats are supported only. (interlaced support is not available)
- vMix supports HEVC or H264 video and AAC audio (AAC-LC) wrapped in a transport stream only. Other codecs are not supported.