VirtualBox

Ticket #9653 (closed defect: obsolete)

Opened 5 years ago

Last modified 6 weeks ago

High latency with USB video capture devices

Reported by: Donuts Owned by:
Priority: minor Component: other
Version: VirtualBox 4.0.12 Keywords:
Cc: Guest type: Windows
Host type: Linux

Description (last modified by aeichner) (diff)

Host: Xubuntu 9.10 x86. Guest: Windows XP SP3

Hi,

I've been trying to use several USB video capture devices in a Windows XP SP3 guest, e.g. a Pinnacle PCTV USB2 which uses an Empia EM28xx chip.

When used natively in both Linux and Windows, there is very little latency between the input video and what is shown on screen (using e.g. tvtime in Linux or DScaler in Windows). So for example, video games are still very playable.

When used in a VirtualBox guest however, latency is much higher. At least 1-2 seconds, making interactive use with a game console unusable. Is that a defect which could be fixed, or a problem intrinsic to how VirtualBox captures USB devices?

Some other capture devices (e.g. one based on Trident TV Master chip) don't show video at all in the Windows guest; I just got a black window and crackling audio with that. Maybe that's due to the XP driver not working with the increased USB latency?

Change History

comment:1 Changed 6 weeks ago by aeichner

  • Status changed from new to closed
  • Resolution set to obsolete
  • Description modified (diff)

Please reopen if still relevant with a recent VirtualBox release.

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