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doc: Add -list_formats all example for video4linux2

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Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
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Jonas Lindgren 2015-03-06 23:02:34 +01:00 committed by Luca Barbato
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doc/indevs.texi
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@ -271,6 +271,9 @@ supported using @command{-list_formats all} for Video4Linux2 devices.
Some usage examples of the video4linux2 devices with avconv and avplay:
@example
# List supported formats for a video4linux2 device.
avplay -f video4linux2 -list_formats all /dev/video0
# Grab and show the input of a video4linux2 device.
avplay -f video4linux2 -framerate 30 -video_size hd720 /dev/video0