v4l2: force normal capture mode

This disables driver-specific modes that VLC would not know about.
This also disables high quality (i.e. still camera) mode since we want
video, as well as other any other future abnormal modes.

modules/access/v4l2/video.c

@@ -852,13 +852,16 @@ int SetupFormat (vlc_object_t *obj, int fd, uint32_t fourcc,
         msg_Err (obj, "cannot get default format: %m");
         return -1;
     }
-    fmt->fmt.pix.pixelformat = fourcc;
     if (v4l2_ioctl (fd, VIDIOC_G_PARM, parm) < 0)
     {
         msg_Err (obj, "cannot get streaming parameters: %m");
         return -1;
     }
 
+    fmt->fmt.pix.pixelformat = fourcc;
+    parm->parm.capture.capturemode = 0; /* normal video mode */
+    parm->parm.capture.extendedmode = 0;
+
     struct v4l2_frmsizeenum fse = {
         .pixel_format = fourcc,
     };