On Fri, Feb 23, 2018 at 2:30 PM, Federico Allegretti <allegfede@xxxxxxxxx> wrote: > i noticed that my pinnacle 300i could accept full resolution settings: > v4l2-ctl --set-fmt-video=width=720,height=576 > > only the first time the command is fired. > > after that, evey time i try to set that resolution with the same > command, i get instead only the half vertical resolution: > v4l2-ctl --get-fmt-video > Format Video Capture: > Width/Height : 720/288 > Pixel Format : 'YU12' > Field : Bottom > Bytes per Line : 720 > Size Image : 311040 > Colorspace : SMPTE 170M > Transfer Function : Default > YCbCr/HSV Encoding: Default > Quantization : Default > Flags : Did you set the video standard? All sorts of bad things could happen if you set the format to 720x576 but the standard is still set to NTSC. To get the standards supported, you can run: v4l2-ctl --list-standards And then set the standard with "v4l2-ctl -s". Do this before setting the format. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com
