doc/indevs: Docs for Blackmagic high bit depth video/audio

Reviewed-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

doc/indevs.texi

@@ -1112,10 +1112,10 @@ need to configure with the appropriate @code{--extra-cflags}
 and @code{--extra-ldflags}.
 On Windows, you need to run the IDL files through @command{widl}.
 
-DeckLink is very picky about the formats it supports. Pixel format is always
-uyvy422, framerate and video size must be determined for your device with
+DeckLink is very picky about the formats it supports. Pixel format is
+uyvy422 or v210, framerate and video size must be determined for your device with
 @command{-list_formats 1}. Audio sample rate is always 48 kHz and the number
-of channels currently is limited to 2 (stereo).
+of channels can be 2, 8 or 16.
 
 @subsection Options
 
@@ -1129,6 +1129,16 @@ Defaults to @option{false}.
 If set to @option{true}, print a list of supported formats and exit.
 Defaults to @option{false}.
 
+@item bm_v210
+If set to @samp{1}, video is captured in 10 bit v210 instead
+of uyvy422. Not all Blackmagic devices support this option.
+
+@item bm_channels <CHANNELS>
+Number of audio channels, can be 2, 8 or 16
+
+@item bm_audiodepth <BITDEPTH>
+Audio bit depth, can be 16 or 32.
+
 @end table
 
 @subsection Examples
@@ -1153,6 +1163,24 @@ Capture video clip at 1080i50 (format 11):
 ffmpeg -f decklink -i 'Intensity Pro@@11' -acodec copy -vcodec copy output.avi
 @end example
 
+@item
+Capture video clip at 1080i50 10 bit:
+@example
+ffmpeg -bm_v210 1 -f decklink -i 'UltraStudio Mini Recorder@@11' -acodec copy -vcodec copy output.avi
+@end example
+
+@item
+Capture video clip at 720p50 with 32bit audio:
+@example
+ffmpeg -bm_audiodepth 32 -f decklink -i 'UltraStudio Mini Recorder@@14' -acodec copy -vcodec copy output.avi
+@end example
+
+@item
+Capture video clip at 576i50 with 8 audio channels:
+@example
+ffmpeg -bm_channels 8 -f decklink -i 'UltraStudio Mini Recorder@@3' -acodec copy -vcodec copy output.avi
+@end example
+
 @end itemize