On 9/4/19 11:40 AM, Mauro Carvalho Chehab wrote: > You can use any of them, provided that it is opened as if it were a > normal file, using the read() interface. For example, this should work: > > cat /dev/videoX | mplayer -cache 8000 - > > The thing is that most apps assume that a V4L2 device supports mmap(). > > This is true for almost all devices, being hdpvr - and pvrusb - two > exceptions. That works, and this works: _[/tmp]_(scott@eva)_ $ cat /dev/video2 | vlc --prefetch-buffer-size 8192 - So I've learned something more about the driver (and the direction playback apps have gone). Thank you very much for the assist. :) -Scott