I am using a IR camera which communicates through UVC on Linux and I am experiencing problems on a ARM embedded board with a C program using V4L2 API.
However, if I open the camera with VLC on my desktop computer on a Debian distribution, I can open it successfully and I can see the frames.
In order to understand what could be wrong in my C program, I would like to debug vlc information in such a way to know what ioctls are being used to setup the camera.
Is there a way to obtain this information with VLC ?
The only information I can retrieve from VLC is from codec information window (pixel format used, resolution and fps) and from v4l2-ctl, which is the following:
Code: Select all
ioctl: VIDIOC_ENUM_FMT
Index : 0
Type : Video Capture
Pixel Format: 'UYVY'
Name : UYVY 4:2:2
Size: Discrete 160x120
Interval: Discrete 0.111s (9.000 fps)
Index : 1
Type : Video Capture
Pixel Format: 'Y16 '
Name : 16-bit Greyscale
Size: Discrete 160x120
Interval: Discrete 0.111s (9.000 fps)
Size: Discrete 160x122
Interval: Discrete 0.111s (9.000 fps)
Index : 2
Type : Video Capture
Pixel Format: 'GREY'
Name : 8-bit Greyscale
Size: Discrete 160x120
Interval: Discrete 0.111s (9.000 fps)
Index : 3
Type : Video Capture
Pixel Format: 'RGBP'
Name : 16-bit RGB 5-6-5
Size: Discrete 160x120
Interval: Discrete 0.111s (9.000 fps)
Index : 4
Type : Video Capture
Pixel Format: 'BGR3'
Name : 24-bit BGR 8-8-8
Size: Discrete 160x120
Interval: Discrete 0.111s (9.000 fps)
s.
