@@ -439,10 +439,11 @@ tell that the raw codec data must be copied as is.

 Use same video quality as source (implies VBR).

 @item -pass @var{n}

-Select the pass number (1 or 2). It is useful to do two pass

-encoding. The statistics of the video are recorded in the first

-pass and the video is generated at the exact requested bitrate

-in the second pass.

+Select the pass number (1 or 2). It is used to do two-pass

+video encoding. The statistics of the video are recorded in the first

+pass into a log file (see also the option -passlogfile),

+and in the second pass that log file is used to generate the video

+at the exact requested bitrate.

 On pass 1, you may just deactivate audio and set output to null,

 examples for Windows and Unix:

 @example

@@ -451,7 +452,9 @@ ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y /dev/null

 @end example

 @item -passlogfile @var{file}

-Set two pass logfile name to @var{file}.

+Set two-pass log file name to @var{file}. Default name is

+@file{ffmpeg2pass-N.log}, where N is a number specific to the output

+stream.

 @item -newvideo

 Add a new video stream to the current output stream.