Limitations and known issues

This section includes known issues or limitations that affect functionality or usability. It also has ways that you can work around these limitations.

Affecting Asmedia USB 3.0 controller ASM3142

  • There is an issue that presents as an audio problem when using this USB 3.0 controller

    • Workaround: Update the driver for the USB controller

Affecting systems with an AMD Ryzen 7 CPU

  • There is an issue that presents as an audio problem when using older drivers

    • Workaround: Update the chipset drivers for your CPU.

  • UVC-451: When using an Eltron EJ198 USB 3.0 host controller via USB 3.0 cable, several error messages might appear. These should not affect the functionality of the device.
    • Workaround: If the problem does affect functionality, a different USB 3.0 host controller must be used.
  • UVC-346: When capturing from a source with a 23.98p, 29.97p or 59.94i signal, frame rate occasionally dips before returning to its original capture rate.
    • Workaround: Set your source frame rate to a different value, such as 30 or 60 fps.
  • UVC-390: Windows 8.1: On rare occasions (< 5% of the time), captured video has a small vertical fluctuation (of a few pixels) or small artifacts in the lower right quadrant of the screen. This is noticeable right from the beginning of capture.
    • Workaround: Start capturing a few moments before your recording or streaming event and check vertical position and the lower right quadrant of the captured image. If any issues are noticed, disconnect and re-connect AV.io HD+’s USB 3.0 cable to the capture computer.