Video Capture Troubles

Hi all,

I'm having a few troubles with DirectShow Video Capture on a Windows Mobile 5 PPC (specifically an iMate JASJAM/HTC Hercules) device, and I'm hoping that the people around here might be able to point me in the right direction.

I'm writing a live streaming application, so the goal is to get access to video frames as they arrive from the device's camera with as little latency as possible.

Anyway - My first issue is the capture resolution available on the device. The vendor-supplied camera application offers capture ranges from 120x90 all the way up to CIF (352x288) at 15fps. However, when I query the camera's capabilities from dshow - via the capture pin's IAMStreamConfig interface - the camera only returns one format: 160x120 at 3.75 to 7.5 fps. Obviously the device is capable of more than this, otherwise the vendor's camera app wouldn't work.

So my question is this: Can I use DirectShow to get a video stream comparable to what the vendor's camera app gets, or am I stuck with 140x120?

Alternately, if I can't use DirectShow to do what I want - how can I get a higher-resolution video stream with minimal latency?

Thanks and regards,

Trent
.

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