I wonder if the opencv port with ffmpeg enabled is supposed to work with pwc driven usb-cameras.
When I try to create a camera capture and query a frame I get
Also I compiled the demo programs atPhilips SPC 900 NC - OpenCV Webcam demonstration,
but I got the same error when I tried to run those demos.
Edit: Later I tried to recompile opencv with ffmpeg enabled (I was not sure ffmpeg was enabled initially). I got these errors compiling opencv:
I know that there have been previous errors that were similar http://www.freebsd.org/cgi/query-pr.cgi?pr=117173
Is the latest opencv supposed to compile with ffmpeg enabled?
When I try to create a camera capture and query a frame I get
Code:
HIGHGUI ERROR: V4L: Could not SYNC to video stream. Operation not supportedbut I got the same error when I tried to run those demos.
Edit: Later I tried to recompile opencv with ffmpeg enabled (I was not sure ffmpeg was enabled initially). I got these errors compiling opencv:
Code:
cvcap_ffmpeg.cpp: In function 'int icvOpenAVI_FFMPEG(CvCaptureAVI_FFMPEG*, const char*)':
cvcap_ffmpeg.cpp:128: warning: comparison between signed and unsigned integer expressions
cvcap_ffmpeg.cpp: In function 'void cvReleaseVideoWriter(CvVideoWriter**)':
cvcap_ffmpeg.cpp:797: warning: comparison between signed and unsigned integer expressions
cvcap_ffmpeg.cpp:804: error: cannot convert 'ByteIOContext**' to 'ByteIOContext*' for argument '1' to 'int url_fclose(ByteIOContext*)'
gmake[3]: *** [cvcap_ffmpeg.lo] Error 1
gmake[3]: Leaving directory `/usr/ports/graphics/opencv/work/opencv-1.0.0/otherlibs/highgui'
gmake[2]: *** [all-recursive] Error 1I know that there have been previous errors that were similar http://www.freebsd.org/cgi/query-pr.cgi?pr=117173
Is the latest opencv supposed to compile with ffmpeg enabled?