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Diffstat (limited to 'doc/ffmpeg.texi')
| -rw-r--r-- | doc/ffmpeg.texi | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index cabf395582..7f2230d46f 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -166,7 +166,10 @@ Set the number of video frames to record. @item -r @var{fps} Set frame rate (Hz value, fraction or abbreviation), (default = 25). @item -s @var{size} -Set frame size. The format is @samp{wxh} (ffserver default = 160x128, ffmpeg default = same as source). +Set frame size. The format is @samp{wxh} (ffserver default = 160x128). +There is no default for input streams, +for output streams it is set by default to the size of the source stream. +If the input file has video streams with different resolutions, the behaviour is undefined. The following abbreviations are recognized: @table @samp @item sqcif @@ -309,6 +312,13 @@ the input video. Use the option "-filters" to show all the available filters (including also sources and sinks). +@item -x264opts @var{option} +Allows you to set any x264 option, see x264 manual for a list. +@example +ffmpeg -i foo.mpg -vcodec libx264 -x264opts keyint=123:min-keyint=20 -an out.mkv +@end example + + @end table @section Advanced Video Options @@ -399,7 +409,10 @@ and the following constants are available: @end table @item -rc_override @var{override} -rate control override for specific intervals +Rate control override for specific intervals, formated as "int,int,int" +list separated with slashes. Two first values are the beginning and +end frame numbers, last one is quantizer to use if positive, or quality +factor if negative. @item -me_method @var{method} Set motion estimation method to @var{method}. Available methods are (from lowest to best quality): @@ -793,7 +806,7 @@ A preset file contains a sequence of @var{option}=@var{value} pairs, one for each line, specifying a sequence of options which would be awkward to specify on the command line. Lines starting with the hash ('#') character are ignored and are used to provide comments. Check -the @file{ffpresets} directory in the Libav source tree for examples. +the @file{ffpresets} directory in the FFmpeg source tree for examples. Preset files are specified with the @code{vpre}, @code{apre}, @code{spre}, and @code{fpre} options. The @code{fpre} option takes the @@ -1055,11 +1068,11 @@ file to which you want to add them. @settitle ffmpeg video converter @c man begin SEEALSO -ffplay(1), ffprobe(1), ffserver(1) and the Libav HTML documentation +ffplay(1), ffprobe(1), ffserver(1) and the FFmpeg HTML documentation @c man end @c man begin AUTHORS -The Libav developers +The FFmpeg developers @c man end @end ignore |