With Gem 0.94 on OSX Sierra 10.12.8
[pix_video] problem of backend with camera : [pix_video]: backend #0='AVF' : AVF // GLEW version 1.13.0 pd recognizes the facetime camera, but no image and if pd recognizes usb port with webcam, only a white square, no image
[pix_image] no image, only a white square
[pix_film] same problem, the file is loaded, and I have the number of frame [91] with the video’s example, but nothing for the output : no image