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lavd: implement NewTek NDI input/output device support

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Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Maksym Veremeyenko 2017-08-18 09:34:06 -04:00 • committed by Marton Balint
parent 84ee6512ed
commit 2634927fe3
10 changed files with 779 additions and 2 deletions
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48
doc/indevs.texi
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@ -332,6 +332,54 @@ ffmpeg -channels 16 -format_code Hi50 -f decklink -i 'UltraStudio Mini Recorder'
@end itemize
@section libndi_newtek
The libndi_newtek input device provides capture capabilities for using NDI (Network
Device Interface, standard created by NewTek).
Input filename is a NDI source name that could be found by sending -find_sources 1
to command line - it has no specific syntax but human-readable formatted.
To enable this input device, you need the NDI SDK and you
need to configure with the appropriate @code{--extra-cflags}
and @code{--extra-ldflags}.
@subsection Options
@table @option
@item find_sources
If set to @option{true}, print a list of found/available NDI sources and exit.
Defaults to @option{false}.
@item wait_sources
Override time to wait until the number of online sources have changed.
Defaults to @option{0.5}.
@item allow_video_fields
When this flag is @option{false}, all video that you receive will be progressive.
Defaults to @option{true}.
@end table
@subsection Examples
@itemize
@item
List input devices:
@example
ffmpeg -f libndi_newtek -find_sources 1 -i dummy
@end example
@item
Restream to NDI:
@example
ffmpeg -f libndi_newtek -i "DEV-5.INTERNAL.M1STEREO.TV (NDI_SOURCE_NAME_1)" -f libndi_newtek -y NDI_SOURCE_NAME_2
@end example
@end itemize
@section dshow
Windows DirectShow input device.

45
doc/outdevs.texi
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@ -182,6 +182,51 @@ ffmpeg -i test.avi -f decklink -pix_fmt uyvy422 -s 720x486 -r 24000/1001 'DeckLi
@end itemize
@section libndi_newtek
The libndi_newtek output device provides playback capabilities for using NDI (Network
Device Interface, standard created by NewTek).
Output filename is a NDI name.
To enable this output device, you need the NDI SDK and you
need to configure with the appropriate @code{--extra-cflags}
and @code{--extra-ldflags}.
NDI uses uyvy422 pixel format natively, but also supports bgra, bgr0, rgba and
rgb0.
@subsection Options
@table @option
@item reference_level
The audio reference level in dB. This specifies how many dB above the
reference level (+4dBU) is the full range of 16 bit audio.
Defaults to @option{0}.
@item clock_video
These specify whether video "clock" themselves.
Defaults to @option{false}.
@item clock_audio
These specify whether audio "clock" themselves.
Defaults to @option{false}.
@end table
@subsection Examples
@itemize
@item
Play video clip:
@example
ffmpeg -i "udp://@@239.1.1.1:10480?fifo_size=1000000&overrun_nonfatal=1" -vf "scale=720:576,fps=fps=25,setdar=dar=16/9,format=pix_fmts=uyvy422" -f libndi_newtek NEW_NDI1
@end example
@end itemize
@section fbdev
Linux framebuffer output device.