@item -dframes @var{number}
Set the number of data frames to record. This is an alias for @code{-frames:d}.
-@item -slang @var{code}
-Set the ISO 639 language code (3 letters) of the current subtitle stream.
-
@item -frames[:stream_specifier] @var{framecount}
Stop writing to the stream after @var{framecount} frames.
@file{PREFIX-N.log}, where N is a number specific to the output
stream.
-@item -vlang @var{code}
-Set the ISO 639 language code (3 letters) of the current video stream.
-
@item -vf @var{filter_graph}
@var{filter_graph} is a description of the filter graph to apply to
the input video.
Disable audio recording.
@item -acodec @var{codec}
Set the audio codec. This is an alias for @code{-codec:a}.
-@item -alang @var{code}
-Set the ISO 639 language code (3 letters) of the current audio stream.
@end table
@section Advanced Audio options:
@table @option
@item -scodec @var{codec}
Set the subtitle codec. This is an alias for @code{-codec:s}.
-@item -slang @var{code}
-Set the ISO 639 language code (3 letters) of the current subtitle stream.
@item -sn
Disable subtitle recording.
@end table