diff options
Diffstat (limited to 'doc')
-rw-r--r-- | doc/faq.texi | 4 | ||||
-rw-r--r-- | doc/ffmpeg.texi | 26 | ||||
-rw-r--r-- | doc/ffprobe.texi | 6 | ||||
-rw-r--r-- | doc/ffserver.texi | 12 |
4 files changed, 23 insertions, 25 deletions
diff --git a/doc/faq.texi b/doc/faq.texi index a29af1e1ad..3d7a275f89 100644 --- a/doc/faq.texi +++ b/doc/faq.texi @@ -280,7 +280,7 @@ Just create an "input.avs" text file with this single line ... @example DirectShowSource("C:\path to your file\yourfile.asf") @end example -... and then feed that text file to FFmpeg: +... and then feed that text file to ffmpeg: @example ffmpeg -i input.avs @end example @@ -348,7 +348,7 @@ ffmpeg -f u16le -acodec pcm_s16le -ac 2 -ar 44100 -i all.a \ rm temp[12].[av] all.[av] @end example -@section FFmpeg does not adhere to the -maxrate setting, some frames are bigger than maxrate/fps. +@section The ffmpeg program does not respect the -maxrate setting, some frames are bigger than maxrate/fps. Read the MPEG spec about video buffer verifier. diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index 38da9186e6..62282b2dd0 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -22,17 +22,15 @@ ffmpeg [[infile options][@option{-i} @var{infile}]]... @{[outfile options] @var{ @chapter Description @c man begin DESCRIPTION -FFmpeg is a very fast video and audio converter. It can also grab from -a live audio/video source. +ffmpeg is a very fast video and audio converter that can also grab from +a live audio/video source. It can also convert between arbitrary sample +rates and resize video on the fly with a high quality polyphase filter. The command line interface is designed to be intuitive, in the sense -that FFmpeg tries to figure out all parameters that can possibly be +that ffmpeg tries to figure out all parameters that can possibly be derived automatically. You usually only have to specify the target bitrate you want. -FFmpeg can also convert from any sample rate to any other, and resize -video on the fly with a high quality polyphase filter. - As a general rule, options are applied to the next specified file. Therefore, order is important, and you can have the same option on the command line multiple times. Each occurrence is @@ -61,7 +59,7 @@ ffmpeg -r 1 -i input.m2v -r 24 output.avi The format option may be needed for raw input files. -By default, FFmpeg tries to convert as losslessly as possible: It +By default ffmpeg tries to convert as losslessly as possible: It uses the same audio and video parameters for the outputs as the one specified for the inputs. @@ -486,7 +484,7 @@ Use 'frames' B-frames (supported for MPEG-1, MPEG-2 and MPEG-4). macroblock decision @table @samp @item 0 -FF_MB_DECISION_SIMPLE: Use mb_cmp (cannot change it yet in FFmpeg). +FF_MB_DECISION_SIMPLE: Use mb_cmp (cannot change it yet in ffmpeg). @item 1 FF_MB_DECISION_BITS: Choose the one which needs the fewest bits. @item 2 @@ -868,22 +866,22 @@ It allows almost lossless encoding. @section Video and Audio grabbing -FFmpeg can grab video and audio from devices given that you specify the input -format and device. +If you specify the input format and device then ffmpeg can grab video +and audio directly. @example ffmpeg -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 /tmp/out.mpg @end example Note that you must activate the right video source and channel before -launching FFmpeg with any TV viewer such as xawtv +launching ffmpeg with any TV viewer such as xawtv (@url{http://linux.bytesex.org/xawtv/}) by Gerd Knorr. You also have to set the audio recording levels correctly with a standard mixer. @section X11 grabbing -FFmpeg can grab the X11 display. +Grab the X11 display with ffmpeg via @example ffmpeg -f x11grab -s cif -r 25 -i :0.0 /tmp/out.mpg @@ -901,7 +899,7 @@ variable. 10 is the x-offset and 20 the y-offset for the grabbing. @section Video and Audio file format conversion -FFmpeg can use any supported file format and protocol as input: +Any supported file format and protocol can serve as input to ffmpeg: Examples: @itemize @@ -921,7 +919,7 @@ It will use the files: The Y files use twice the resolution of the U and V files. They are raw files, without header. They can be generated by all decent video decoders. You must specify the size of the image with the @option{-s} option -if FFmpeg cannot guess it. +if ffmpeg cannot guess it. @item You can input from a raw YUV420P file: diff --git a/doc/ffprobe.texi b/doc/ffprobe.texi index b775f558dd..15090220f3 100644 --- a/doc/ffprobe.texi +++ b/doc/ffprobe.texi @@ -22,7 +22,7 @@ ffprobe [options] [@file{input_file}] @chapter Description @c man begin DESCRIPTION -FFprobe gathers information from multimedia streams and prints it in +ffprobe gathers information from multimedia streams and prints it in human- and machine-readable fashion. For example it can be used to check the format of the container used @@ -33,7 +33,7 @@ If a filename is specified in input, ffprobe will try to open and probe the file content. If the file cannot be opened or recognized as a multimedia file, a positive exit code is returned. -FFprobe may be employed both as a standalone application or in +ffprobe may be employed both as a standalone application or in combination with a textual filter, which may perform more sophisticated processing, e.g. statistical processing or plotting. @@ -41,7 +41,7 @@ Options are used to list some of the formats supported by ffprobe or for specifying which information to display, and for setting how ffprobe will show it. -FFprobe output is designed to be easily parsable by a textual filter, +ffprobe output is designed to be easily parsable by a textual filter, and consists of one or more sections of the form: @example [SECTION] diff --git a/doc/ffserver.texi b/doc/ffserver.texi index 021b237de5..e5c9d40235 100644 --- a/doc/ffserver.texi +++ b/doc/ffserver.texi @@ -22,12 +22,12 @@ ffserver [options] @chapter Description @c man begin DESCRIPTION -FFserver is a streaming server for both audio and video. It supports +ffserver is a streaming server for both audio and video. It supports several live feeds, streaming from files and time shifting on live feeds (you can seek to positions in the past on each live feed, provided you specify a big enough feed storage in ffserver.conf). -FFserver runs in daemon mode by default; that is, it puts itself in +ffserver runs in daemon mode by default; that is, it puts itself in the background and detaches from its TTY, unless it is launched in debug mode or a NoDaemon option is specified in the configuration file. @@ -39,7 +39,7 @@ information. @section How does it work? -FFserver receives prerecorded files or FFM streams from some ffmpeg +ffserver receives prerecorded files or FFM streams from some ffmpeg instance as input, then streams them over RTP/RTSP/HTTP. An ffserver instance will listen on some port as specified in the @@ -57,7 +57,7 @@ file. @section Status stream -FFserver supports an HTTP interface which exposes the current status +ffserver supports an HTTP interface which exposes the current status of the server. Simply point your browser to the address of the special status stream @@ -249,8 +249,8 @@ For example: @samp{http://localhost:8080/test.asf?date=2002-07-26T23:05:00}. Use @file{configfile} instead of @file{/etc/ffserver.conf}. @item -n Enable no-launch mode. This option disables all the Launch directives -within the various <Stream> sections. FFserver will not launch any -ffmpeg instance, so you will have to launch them manually. +within the various <Stream> sections. Since ffserver will not launch +any ffmpeg instances, you will have to launch them manually. @item -d Enable debug mode. This option increases log verbosity, directs log messages to stdout and causes ffserver to run in the foreground |