Dear All,

Currently I'm working on an opensource project related to video capture from HD camera (1920x1080).
The project is at very beginning but already have a serious technical issue.
Aims of the project: Capture video from the HD camera using Quadro FX SDI video capture card and NVidia FX5800 graphics card for encoding.

Essence of the issue
----------------------
After all successful initialization steps video capture has failed with an error.Please, see details below.

Issue description
----------------------

In my research steps I was guided by NVIDIA Quadro SDI capture programmer's guide (http://www.nvidia.com/docs/IO/40049/PG-03776-001_v05.pdf) and OpenGL NVIDIA video capture extension (http://www.opengl.org/registry/specs/NV/video_capture.txt).

When I call VideoCaptureNV, I always get the following error:

INVALID_VALUE from the OpenGL extension. Please, see at the end of this question short description of the VideoCaptureNV method.

Really, I can't understand the reason for that. Unfortunately, I don't have a possibility to check whether the video capture works correctly with my parameters on Windows platform.

I've attached the test project sources to this question. It is a simple test application.

It consist of the following parts:

1. OpenGL initialization
2. OpenGL context initialization
3. Capture card initialization
4. Start capturing of video frames

Here is short excerpt from video_capture.txt document mentioned above:

================================================
enum VideoCaptureNV(uint video_capture_slot, uint *sequence_num,
uint64EXT *capture_time);

can be called to capture one frame of video. If no frames are
available, this call will block until frames are ready for capture
or an error occurs. VideoCaptureNV will return one of SUCCESS_NV,
PARTIAL_SUCCESS_NV, or FAILURE_NV. If the capture operation
completed successfully on all stream with objects bound, SUCCESS_NV
is returned. If some streams succeeded PARTIAL_SUCCESS_NV is
returned. If the capture failed on all streams, or if the capture
state on the specified slot is invalid, FAILURE_NV is returned. In
addition, the following GL errors are generated if FAILURE_NV was
returned because of invalid capture state:

* INVALID_OPERATION if any stream has both texture and buffer
objects bound.

* INVALID_VALUE if any buffer objects bound are not large enough
to contain the the data from the region they are bound to at the
specified offset.

* INVALID_VALUE if the dimensions of any textures bound do not
match the dimensions of the region they are bound to.

* INVALID_OPERATION if the base level of any textures bound has
not been defined.

* INVALID_OPERATION if the internal formats of any textures bound
to the same stream does not match.

* INVALID_OPERATION if automatic mipmap generation is enabled for
any textures bound.

=====================================================

If you need some other info, please ask me and I'll provide it in a moment.

--
Thanks to all in advance,
Alexey