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submodule
ffmpeg
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b999774f
Commit
b999774f
authored
Jan 31, 2013
by
Stefano Sabatini
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doc/indevs: document v4l2 options
Reviewed-By:
Giorgio Vazzana
<
mywing81@gmail.com
>
parent
349e7f42
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@@ -631,6 +631,75 @@ ffmpeg -f video4linux2 -input_format mjpeg -i /dev/video0 out.mpeg
For more information about Video4Linux, check @url{http://linuxtv.org/}.
@subsection Options
@table @option
@item standard
Set the standard. Must be the name of a supported standard. To get a
list of the supported standards, use the @option{list_standards}
option.
@item channel
Set the input channel number. Default to 0.
@item video_size
Set the video frame size. The argument must be a string in the form
@var{WIDTH}x@var{HEIGHT} or a valid size abbreviation.
@item pixel_format
Select the pixel format (only valid for raw video input).
@item input_format
Set the preferred pixel format (for raw video) or a codec name.
This option allows to select the input format, when several are
available.
@item framerate
Set the preferred video framerate.
@item list_formats
List available formats (supported pixel formats, codecs, and frame
sizes) and exit.
Available values are:
@table @samp
@item all
Show all available (compressed and non-compressed) formats.
@item raw
Show only raw video (non-compressed) formats.
@item compressed
Show only compressed formats.
@end table
@item list_standards
List supported standards and exit.
Available values are:
@table @samp
@item all
Show all supported standards.
@end table
@item timestamps, ts
Set type of timestamps for grabbed frames.
Available values are:
@table @samp
@item default
Use timestamps from the kernel.
@item abs
Use absolute timestamps (wall clock).
@item mono2abs
Force conversion from monotonic to absolute timestamps
@end table
Default value is @code{default}.
@end table
@section vfwcap
VfW (Video for Windows) capture input device.
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