Hello Sebastian,

I described my tests on *http://wiki.elphel.com/index.php?title=Talk:OpenCV*
 and http://wiki.elphel.com/index.php?title=OpenCV

<http://wiki.elphel.com/index.php?title=OpenCV>For now as far as I know all
our customers who uses OpenCV does it under GNU/Linux with the
v4l loop-back approach.

It should not be that difficult to make work OpenCV with GStreamer and
Elphel. Compiling it on windows is another story. (I can't help here)

And FFMPEG is simply incompatible with our RTP streamer. :( I think it does
not read image size from the right place.

Best regards,
Alexandre

On Tue, Mar 15, 2011 at 4:23 PM, Schuster, Sebastian <
[email protected]> wrote:

>  Hello,
>
> I try to open a stream to the camera in OpenCV (Windows OS). OpenCV throws
> these error messages:
> >>>>>>>>>>>
> [rtsp @ 0xbefd80]Estimating duration from bitrate, this may be inaccurate
> picture size invalid (0x0)
> Last message repeated 1 times
> [rtsp @ 0xbf2480]Estimating duration from bitrate, this may be inaccurate
> <<<<<<<<<<<
> So I have experienced the same issues with the FFMPEG like in this example
> * <http://wiki.elphel.com/index.php?title=Talk:OpenCV>*
>
> Unfortunately it was not possible for us to rebuild the Windows version of
> OpenCV with GStreamer instead of FFMPEG.
> Could you give us some advice for establishing the stream?
>
> Thanks,
> Sebastian
>
>
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