@@ -889,8 +889,8 @@ to feed the same packets to several muxers directly.

 The slave outputs are specified in the file name given to the muxer,

 separated by '|'. If any of the slave name contains the '|' separator,

 leading or trailing spaces or any special character, it must be

-escaped (see the ``Quoting and escaping'' section in the ffmpeg-utils

-manual).

+escaped (see @ref{quoting_and_escaping,,the "Quoting and escaping"

+section in the ffmpeg-utils(1) manual,ffmpeg-utils}).

 Muxer options can be specified for each slave by prepending them as a list of

 @var{key}=@var{value} pairs separated by ':', between square brackets. If

@@ -905,9 +905,12 @@ output name suffix.

 @item bsfs[/@var{spec}]

 Specify a list of bitstream filters to apply to the specified

-output. It is possible to specify to which streams a given bitstream

-filter applies, by appending a stream specifier to the option

-separated by @code{/}. If the stream specifier is not specified, the

+output.

+

+It is possible to specify to which streams a given bitstream filter

+applies, by appending a stream specifier to the option separated by

+@code{/}. @var{spec} must be a stream specifier (see @ref{Format

+stream specifiers}).  If the stream specifier is not specified, the

 bistream filters will be applied to all streams in the output.

 Several bitstream filters can be specified, separated by ",".