From 4e8a50437110dc3d70e406c8d3dbf2a522ff5594 Mon Sep 17 00:00:00 2001 From: diego Date: Sat, 8 Feb 2003 00:00:00 +0000 Subject: Rename documentation directories to two-letter language codes. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9333 b3059339-0415-0410-9bf9-f77b7e298cf2 --- DOCS/Polish/encoding.html | 467 ---------------------------------------------- 1 file changed, 467 deletions(-) delete mode 100644 DOCS/Polish/encoding.html (limited to 'DOCS/Polish/encoding.html') diff --git a/DOCS/Polish/encoding.html b/DOCS/Polish/encoding.html deleted file mode 100644 index 25853e93f3..0000000000 --- a/DOCS/Polish/encoding.html +++ /dev/null @@ -1,467 +0,0 @@ - - - - - - - - - - -

2.4. Encoding with MEncoder

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2.4.1. Overview

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MEncoder (MPlayer's Movie Encoder) is a simple movie encoder, -designed to encode MPlayer-playable movies -(AVI/ASF/OGG/DVD/VCD/VOB/MPG/MOV/VIV/FLI/RM/NUV/NET) to other MPlayer-playable -formats (see below). It can encode with various codecs, like DivX4 (1 or -2 passes), libavcodec, PCM/MP3/VBRMP3 audio. Also has -stream copying and video resizing abilities.

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2.4.2. Compiling

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-

-

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You are ready. As you probably know, other encoding tools need the -avifile library installed. MEncoder doesn't need it at all.

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2.4.3. MEncoder features

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Planned features : -

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2.4.3.1. Encoding 2 or 3-pass DivX4

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2-pass encoding : the name comes from the fact that this method encodes the file twice. -The first encoding (dubbed pass) creates some temporary files (*.log) with a -size of few megabytes, do not delete them yet (you can delete the AVI). In the second pass, the -2-pass output file is created, using the bitrate data from the temporary files. The resulting -file will have much better image quality. If this is the first time you heard -about this, you should consult some guides available on the Net.

- -

This example shows how to encode a DVD to a 2-pass DivX4 AVI. Just two -commands are needed :
-    rm frameno.avi - remove this file, which - can come from a previous 3-pass encoding (it interferes with current one)
-    mencoder -dvd 2 -divx4opts br=1100 --o movie.avi -pass 1
-    mencoder -dvd 2 -divx4opts br=1100 -o movie.avi -pass 2

- -

3-pass encoding : this is an extension of 2-pass encoding, - where the audio encoding takes place in a separate pass. This method enables - estimation of recommended video bitrate in order to fit on a CD. Also, the - audio is encoded only once, unlike in 2-pass mode. The schematics :

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- - - - - - - - - - - - - - - - - -
- rm frameno.avi - remove conflicting temporary file
- mencoder <file/DVD> -ovc frameno -o - frameno.avi - First pass : an audio-only avi file will be created, containing - ONLY the requested audio stream. Don't forget -lameopts, if - you need to set it. If you were encoding a long movie, MEncoder prints - the recommended bitrate values for 650Mb, 700Mb, and 800Mb destination - sizes, after this pass finishes.
- mencoder <file/DVD> -oac copy -pass 1 - -divx4opts br=<bitrate> - Second pass : alias the first pass of DivX4 video encoding. - Optionally specify the video bitrate MEncoder printed at the end of the - previous pass.
- mencoder <file/DVD> -oac copy -pass 2 - -divx4opts br=<bitrate> - Third pass : alias the second pass of DivX4 video encoding. - Optionally specify the video bitrate MEncoder printed at the end of the - previous pass. In this pass, audio from frameno.avi will be - inserted into the destination file.. and it's all ready!
-

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Example for 3-pass encoding :

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    rm frameno.avi - remove this file, - which can come from a previous 3-pass encoding (it interferes with current - one)
-    mencoder -dvd 2 -ovc frameno - -o frameno.avi
-    mencoder -dvd 2 - -divx4opts br=1100 -oac copy -o movie.avi -pass 1
-    mencoder -dvd 2 - -divx4opts br=1100 -oac copy -o movie.avi -pass 2 -

- -

2 or 3-pass encoding using internal libavcodec controler : -Optionally you can use libavcodec's internal 2 or 3-pass mode, it may gives you -better final rate accuracy than using the external, DivX4-inspired 2-pass rate -controler with libavcodec.
-

    -2-pass encoding :
    -rm -f lavc_stats.txt
    -mencoder -dvd 2 -ovc lavc -lacvopts vpass=1 (audio-options) -o movie.avi
    -mencoder -dvd 2 -ovc lavc -lacvopts vpass=2 (audio-options) -o movie.avi
    -
    -3-pass encoding :
    -rm -f frameno.avi lavc_stats.txt
    -mencoder -dvd 2 -ovc frameno (audio-options) -o frameno.avi
    -mencoder -dvd 2 -ovc lavc -lacvopts vpass=1 -oac copy -o movie.avi
    -mencoder -dvd 2 -ovc lavc -lacvopts vpass=2 -oac copy -o movie.avi
    -
-

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2.4.3.2. Rescaling movies

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Often the need to resize movie images' size emerges. Its reasons can be many, - examples are decreasing output file size, encoding SVCDs to DivX. Ripped DVDs - are mostly rescaled, for example a 4:3 DVD should be 640x480, especially - when you want it to fit to 1 CD, and have good quality at the same time. - SVCDs have 480x480 size, and their header contains the aspect ratio the - player should use (Ex.: 480x480 + 4:3 = 640x480). However when encoding to - AVI (DivX) files, you have be aware that AVI headers don't store this - value. Thus, the only solution is rescaling.

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The scaling process is handled by the 'scale' video filter: - -vop scale=X:Y. Its quality can be set with the - -sws option. If it's not specified, MEncoder will use 0 : - fast bilinear.

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Usage :
-    mencoder sample-svcd.mpg -divx4opts br=1300 -vop scale=640:480 -sws 2 -o output.avi

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2.4.3.3. Stream copying

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MEncoder can handle input streams in two ways : encode or - copy them. This section is about copying.

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  • Video stream (option -ovc copy) : nice stuff can be done :)
    - Like, putting (not converting!) FLI or VIVO or MPEG1 video into an AVI file ! - Of course only MPlayer can play such files :) And it probably has no - real life value at all. Rationally : video stream copying can be useful for - example when only the audio stream has to be encoded (like, uncompressed PCM - to MP3).
    • - -
  • Audio stream (option -oac copy) : straightforward. - It is possible to take an external audio file (MP3, AC3, Vorbis) and mux it - into the output stream. Use the -audiofile <filename> - option for this.
    • -
-

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2.4.3.4. Fixing AVIs with broken index or interleaving

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Easiest thing. We simply copy the video and audio streams, and -MEncoder generates the index. Of course this cannot fix possible bugs in -the video and/or audio streams. It also fixes files with broken interleaving, -thus the -ni option won't be needed for them anymore.

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Command : mencoder -idx input.avi -ovc copy -oac copy -o output.avi

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2.4.3.5. Encoding with the libavcodec codec family

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libavcodec provides simple encoding to a -lot of interesting video and audio formats (currently its audio codecs are -unsupported). You can encode to the following codecs :

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    -
  • mjpeg - Motion JPEG
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  • h263 - H263
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  • h263p - H263 Plus
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  • mpeg4 - DivX4
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  • msmpeg4 - the old DivX
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  • msmpeg4v2 - Micro$oft MPEG4 V2 (DivX alias MP43 predecessor)
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  • rv10 - an old RealVideo codec
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  • mpeg1video - MPEG1 video :)
    • -
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The first column contains the codec names that should be passed after the - vcodec config, like : -lavcopts vcodec=msmpeg4

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An example, with MJPEG compression :
-     mencoder -dvd 2 -o title2.avi -ovc lavc -lavcopts vcodec=mjpeg

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2.4.3.6. Encoding from multiple input image files (JPEGs or PNGs)

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MEncoder is capable of creating movies from one or more JPEG or PNG - files. With simple framecopy it can create MJPEG (Motion JPEG) or MPNG - (Motion PNG) files.

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Explanation of the process

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MEncoder decodes the input image(s) with libjpeg - (when decoding PNGs, it will use libpng). -

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MEncoder then feeds the decoded image to the chosen video compressor - (DivX4, Xvid, ffmpeg msmpeg4, etc...). Watch for the PNG decoder, as - currently it can output only to RGB formats, thus can't be used with codecs - that require YUV as input, like DivX4 or ffmpeg's msmpeg4.

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Examples

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The explanation of the -mf option can be found below in the - global Options section and in the manpage.

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Creating a DivX4 file from all the JPEG files in the current dir :
-   mencoder \*.jpg -mf on:w=800:h=600:fps=25 -ovc divx4 -o - output.avi

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Creating a DivX4 file from some JPEG files in the current dir :
-   mencoder frame001.jpg,frame002.jpg -mf on:w=800:h=600:fps=25 -ovc divx4 -o - output.avi

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Creating a Motion JPEG (MJPEG) file from all the JPEG files in the current dir :
-   mencoder \*.jpg -mf on:w=800:h=600:fps=25 -ovc copy - -o output.avi

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Creating an uncompressed file from all the PNG files in the current dir :
-   mencoder \*.png -mf on:w=800:h=600:fps=25:type=png -ovc raw -o - output.avi

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Creating a Motion PNG (MPNG) file from all the PNG files in the current dir :
-   mencoder \*.png -mf on:w=800:h=600:fps=25:type=png -ovc copy - -o output.avi

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2.4.4. Syntax

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  mencoder [options] [input file] [options] ...

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2.4.5. Available options

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NOTE : for all available options, read the manpage !

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- As MEncoder is built on the same codebase as MPlayer, there - are many MPlayer options that have function in MEncoder too! - See, you can use -sid to rip a DVD with subtitles, or - -noidx to disregard buggy index of input AVI. Be smart! -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- -ss time - start encoding from the given time (can start only from keyframes !) -
- -endpos time - stop encoding at the given time. See the manpage for examples ! -
- -o filename - specify output filename -
- -sws 0-2 - type of scaling method
-   0 - fast bilinear
-   1 - bilinear
-   2 - bicubic (best quality)
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- -ovc codecname - Encode with the given codec (codec names are from codecs.conf). Examples:
-   help - get list of available codecs
-   rawrgb - ?
-   copy - no encoding, just copy the stream (only from AVI/ASF now)
-   divx4 - encode to DivX4
-   lavc - encode with a codec from libavcodec
-   vfw - encode with a Windows DLL
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- -oac codecname - Encode with the given codec (codec names are from codecs.conf). Examples:
-   help - get list of available codecs
-   copy - no encoding, just copy the stream (only from AVI/ASF now)
-   pcm - encode to uncompressed PCM
-   mp3lame - encode to MP3 (using Lame)
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- -mf multifile options - Used when encoding from multiple JPEG files. Its sub-options are:
-   on - turns on multifile support
-   w=<value> - width of the output file
-   h=<value> - height of the output file
-   fps=<value> - fps of the output file
-   type=<value> - type of input files (available types : jpeg, png)
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- -divx4opts - If encoding to DivX4, you can specify its parameters here, like:
-   -divx4opts br=1800:deinterlace:key=250
- Common options: (for full list, check the manpage!)
-   help - get help
-   br=<value> - specify bitrate in kbit <4-16000> or bit <16001-24000000>
-   q=<value> - quality (1-fastest, 5-best - default 5)
-   key=<value> - keyframe interval
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- -lavcopts - If encoding with libavcodec, you can specify its parameters here, like:
-   -lavcopts vcodec=msmpeg4:vbitrate=1800:vhq:keyint=250
- Common options: (for full list, check the manpage!)
-   help - get help
-   vcodec=<value> - select videocodec (for the full list, see the libavcodec section above)
-   vbitrate=<value> - specify bitrate in kbit <4-16000> or bit <16001-24000000>
-   vhq - high quality
-   keyint=<value> - keyframe interval
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- -lameopts - If encoding to MP3 with libmp3lame, you can specify its parameters here, like:
-   -lameopts q=3
-   -lameopts br=192:cbr
- Common options: (for full list, check the manpage!)
-   help - get help
-   cbr - select CBR MP3 (default is VBR)
-   br=<value> - specify bitrate in kbit <0-1024> (this is for CBR only!)
-   q=<value> - quality (0-highest, 9-fastest - default 0) (this is for VBR only!)
-   vbr=<value> - VBR sub-mode (3-ABR, best quality/speed) (this is for VBR only!)
-
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2.4.6. Examples

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Using MEncoder is the easiest thing on Earth. See the following :

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Encoding from DVD, title 2 :
-     mencoder -dvd 2 -o title2.avi

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The same, but with libavcodec family, MJPEG compression :
-     mencoder -dvd 2 -o title2.avi -ovc lavc -lavcopts vcodec=mjpeg -ffourcc mjpg

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Encoding from DVD, title 2, with rescaling :
-     mencoder -dvd 2 -vop scale=640:480 -sws 2 -o title2.avi

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Encoding from HTTP :
-     mencoder http://mplayer.hq/example.avi -o example.avi

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Encoding from a pipe :
-     rar p test-SVCD.rar | mencoder -divx4opts br=800 -ofps 24 -pass 1 -- -

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Encoding multiple *.vob files :
-     cat *.vob | mencoder <options> -

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Encoding from tuner (for tuner options see the TV input section !) :
-     mencoder -tv on:driver=v4l:width=640:height=480 <options>

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For all available options, check the MEncoder man page ! -

- - - -- cgit v1.2.3