2002-06-25 06:15:04 +00:00
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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2001-11-20 14:18:17 +00:00
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2002-03-07 17:55:34 +00:00
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2002-06-12 09:14:52 +00:00
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<LINK REL="stylesheet" TYPE="text/css" HREF="../default.css">
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2002-06-25 06:15:04 +00:00
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2002-03-07 17:55:34 +00:00
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2002-06-25 06:15:04 +00:00
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<BODY>
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2001-11-20 14:18:17 +00:00
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2003-01-28 17:16:23 +00:00
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<H2><A NAME="encoding">7 Enk<6E>dol<6F>s a MEncoderrel</A></H2>
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2001-11-20 14:18:17 +00:00
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2002-11-23 21:51:31 +00:00
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<P>A rendelkez<65>sre <20>ll<6C> opci<63>k <20>s p<>ld<6C>k teljes list<73>j<EFBFBD>t l<>sd a man
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2003-01-12 21:26:42 +00:00
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page-ben. Sz<53>mos p<>lda <20>ll rendelkez<65>sre a k<>l<EFBFBD>nb<6E>z<EFBFBD> opci<63>kr<6B>l a
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<A HREF="../tech/encoding-tips.txt">tech/encoding-tips.txt</A> file-ban.
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Ezek a p<>ld<6C>k az
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<A HREF="http://mplayerhq.hu/mailman/listinfo/mplayer-users">mplayer-users</A>
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levelez<65>si list<73>r<EFBFBD>l lettek kigy<67>jtve, <20>gy <20>rdemes lehet ezen lista
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<A HREF="http://mplayerhq.hu/pipermail/mplayer-users/">arch<EFBFBD>vum<EFBFBD>t</A>
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b<>ng<6E>szgetni inf<6E><66>rt.</P>
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2002-10-06 20:58:07 +00:00
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2003-02-04 21:45:02 +00:00
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<H2><A NAME=2pass>7.1 2, 3 menetes MPEG4 ("DivX") enk<6E>dol<6F>sa</A></H2>
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2001-11-20 14:18:17 +00:00
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2002-10-06 20:58:07 +00:00
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<P><U><B>2 menetes enk<6E>dol<6F>s:</B></U> az elnevez<65>s onnan j<>n, hogy ezzel a
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2002-01-28 14:01:29 +00:00
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m<>dszerrel a file <I>k<EFBFBD>tszer</I> lesz enk<6E>dolva. Az els<6C> menet n<>h<EFBFBD>ny p<>r
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Mb-os ideiglenes (*.log) file-t hoz l<>tre, amiket egyel<65>re nem szabad t<>r<EFBFBD>lni
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2004-01-06 13:37:55 +00:00
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(az AVI t<>r<EFBFBD>lhet<65>, ugyanolyan mintha vpass opci<63>k n<>lk<6C>l keletkezett volna).
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2002-01-28 14:01:29 +00:00
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A m<>sodik menetben keletkezik a t<>nyleges 2 menetes DivX, az ideiglenes
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file-ok adataib<69>l. A keletkez<65> file az egy menetesekhez k<>pest sokkal jobb
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min<69>s<EFBFBD>ggel <20>s kisebb m<>rettel b<>r. Ha most hallassz err<72>l el<65>sz<73>r, jobb ha
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keresel a neten egy <20>tmutat<61>t.</P>
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2001-11-20 14:18:17 +00:00
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2003-01-12 21:26:42 +00:00
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<P>A k<>vetkez<65> p<>lda egy DVD 2 menetes MPEG4 ("DivX") AVI-ba t<>rt<72>n<EFBFBD> enk<6E>dol<6F>s<EFBFBD>t
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2002-10-06 20:58:07 +00:00
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mutatja be. Csak k<>t parancs sz<73>ks<6B>ges:<BR>
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2002-08-14 20:24:55 +00:00
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<CODE> rm frameno.avi</CODE> - t<>r<EFBFBD>ld ezt a file-t,
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ami egy esetleges el<65>z<EFBFBD> 3 menetes enk<6E>dol<6F>sb<73>l sz<73>rmazhat<BR>
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2003-07-09 20:10:48 +00:00
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<CODE> mencoder dvd://2 -ovc lavc -lavcopts
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2004-01-06 13:37:55 +00:00
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vcodec=mpeg4:opci<63>k:vpass=1 -oac copy -o film.avi<BR>
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2003-07-09 20:10:48 +00:00
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<CODE> mencoder dvd://2 -ovc lavc -lavcopts
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2004-01-06 13:37:55 +00:00
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vcodec=mpeg4:opci<63>k:vpass=2 -oac copy -o film.avi<BR>
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2002-01-28 14:01:29 +00:00
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2002-10-06 20:58:07 +00:00
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<P><U><B>3 menetes enk<6E>dol<6F>s:</B></U> ez egyfajta b<>v<EFBFBD>tett k<>tmenetes
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2002-01-28 14:01:29 +00:00
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enk<6E>dol<6F>s. A k<>l<EFBFBD>nbs<62>g abban <20>ll hogy itt az audio enk<6E>dol<6F>sa k<>l<EFBFBD>n
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menetben t<>rt<72>nik, ez<65>ltal lehet<65>v<EFBFBD> v<>lik annak megbecsl<73>se hogy az adott
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filmet milyen bitr<74>t<EFBFBD>val kell t<>m<EFBFBD>r<EFBFBD>teni hogy r<>f<EFBFBD>rjen egy 650, 700 vagy
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800Mb-os CD-re, <20>s ezt a <B>MEncoder</B> ki is sz<73>molja. Tov<6F>bb<62>, ilyenkor
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az audio csak egyszer ker<65>l enk<6E>dol<6F>sra, ellent<6E>tben a 2 menetes m<>ddal.
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2002-10-06 20:58:07 +00:00
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A haszn<7A>lata a k<>vetkez<65>:</P>
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<OL>
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<LI>egy esetleges el<65>z<EFBFBD> 3 menetes enk<6E>dol<6F>sb<73>l sz<73>rmaz<61> file t<>rl<72>se,
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mely konfliktolhat a most k<>vetkez<65>vel
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<P><CODE>rm frameno.avi</CODE></P></LI>
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<LI>Els<EFBFBD> menet:
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<P><CODE>mencoder <file/DVD> -ovc frameno -oac mp3lame -lameopts vbr=3:opci<63>k -o frameno.avi</CODE></P>
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<P>Egy csak audiot tartalmaz<61> AVI file j<>n l<>tre, ami a k<>rt form<72>tumban
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tartalmazza az audio streamet. Ha akarod haszn<7A>lhatod a
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<CODE>-lameopts</CODE> opci<63>t. Ha ez egy hosszabb film, e menet v<>g<EFBFBD>n a
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MEncoder ki<6B>rja hogy mekkora bitrate-tel t<>m<EFBFBD>r<EFBFBD>ts a k<>vetkez<65> menetekben
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hogy a film r<>f<EFBFBD>rjen egy 650, 700 vagy 800Mb-os CD-re.</P></LI>
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<LI>M<EFBFBD>sodik menet:
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2004-01-06 13:37:55 +00:00
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<P><CODE>mencoder <file/DVD> -oac copy -ovc lavc -lavcopts
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vcodec=mpeg4:vpass=1:vbitrate=<bitr<EFBFBD>ta></CODE></P>
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2003-01-12 21:26:42 +00:00
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<P>Alias az MPEG4 video enk<6E>dol<6F>s els<6C> menete. Opcion<6F>lisan megadhatod azt
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2002-10-06 20:58:07 +00:00
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a bitrate-et amit a MEncoder az el<65>z<EFBFBD> menet v<>g<EFBFBD>n ki<6B>rt, l<>sd
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feljebb.</P></LI>
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<LI>Harmadik menet:
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2004-01-06 13:37:55 +00:00
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<P><CODE>mencoder <file/DVD> -oac copy -ovc lavc -lavcopts
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vcodec=mpeg4:vpass=2:vbitrate=<bitr<EFBFBD>ta></CODE></P>
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2003-01-12 21:26:42 +00:00
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<P>Alias az MPEG4 video enk<6E>dol<6F>s m<>sodik menete. Add meg
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2002-10-06 20:58:07 +00:00
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azt a bitrate-et amit a MEncoder az el<65>z<EFBFBD> menet v<>g<EFBFBD>n ki<6B>rt, l<>sd
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feljebb. Ebben a menetben a <CODE>frameno.avi</CODE>-ban lev<65> audio
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beleker<65>l a c<>lfileba.. <20>s k<>sz is az eg<65>sz!</P></LI>
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</OL>
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<H4>P<EFBFBD>lda a 3 menetes enk<6E>dol<6F>sra:</H4>
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2002-01-28 14:01:29 +00:00
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<P><CODE> rm frameno.avi</CODE> - esetlegesen egy el<65>z<EFBFBD>
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enk<6E>dol<6F>sbol sz<73>rmaz<61> file t<>rl<72>se (bezavar a most k<>vetkez<65>nek)<BR>
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2003-07-09 20:10:48 +00:00
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<CODE> mencoder dvd://2 -ovc frameno
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2002-10-06 20:58:07 +00:00
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-o frameno.avi -oac mp3lame -lameopts vbr=3:opci<63>k<BR>
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2003-07-09 20:10:48 +00:00
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mencoder dvd://2 -ovc lavc
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2004-01-06 13:37:55 +00:00
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-lavcopts vcodec=mpeg4:vpass=1:vbitrate=1100 -oac copy -o movie.avi<BR>
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2003-07-09 20:10:48 +00:00
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mencoder dvd://2 -ovc lavc
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2004-01-06 13:37:55 +00:00
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-lavcopts vcodec=mpeg4:vpass=2:vbitrate=1100 -oac copy -o movie.avi</CODE>
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2002-01-28 14:01:29 +00:00
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</P>
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2001-11-20 14:18:17 +00:00
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2003-01-28 17:16:23 +00:00
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<H2><A NAME="mpeg">7.2 Enk<6E>dol<6F>s MPEG form<72>tumba</A></H2>
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2003-09-01 19:47:34 +00:00
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<P>A MEncoder k<>pes MPEG (MPEG-PS) form<72>tum<75> kimeneti file-t gener<65>lni. Ez
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persze val<61>sz<73>n<EFBFBD>leg csak a <a href="codecs.html#libavcodec">libavcodec</a>
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<I>mpeg1video</I> codec-<2D>vel hasznos, mert (az MPlayer-t kiv<69>ve) minden
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lej<65>tsz<73> MPEG1 video, <20>s MPEG1 layer2 (MP2) audio stream-re sz<73>m<EFBFBD>t az MPEG
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file-okban.</P>
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2003-01-28 17:16:23 +00:00
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<P>A MEncoder ezen k<>pess<73>ge jelenleg nem t<>l hasznos, mert - att<74>l eltekintve
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hogy m<>g el<65>gg<67> bugos is -, m<>g nem lehet MPEG 1 layer 2 (MP2) audio-ba
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enk<6E>dolni MEncoderen bel<65>l, m<>rpedig az MPEG file-okba az esetek 99%-<2D>ban
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ez kell.</P>
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<P>A MEncoder kimeneti form<72>tum<75>nak megv<67>ltoztat<61>s<EFBFBD>ra az <CODE>-of mpeg</CODE>
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opci<63> szolg<6C>l.</P>
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<P>P<EFBFBD>lda:<BR>
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<CODE>mencoder -of mpeg -ovc lavc -lavcopts vcodec=mpeg1video
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-oac copy <other options> media.avi -o output.mpg</CODE></P>
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2003-02-04 21:45:02 +00:00
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<H2><A NAME=rescaling>7.3 Filmek <20>tm<74>retez<65>se</A></H2>
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2001-11-20 14:18:17 +00:00
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2002-11-23 21:51:31 +00:00
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<P>Gyakran el<65>j<EFBFBD>n a filmek <20>tm<74>retez<65>s<EFBFBD>nek ig<69>nye. Ennek sok oka lehet,
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p<>ld<6C>ul a filem<65>ret cs<63>kkent<6E>se, illetve a sz<73>ks<6B>ges h<>l<EFBFBD>zati
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s<>vsz<73>less<73>g cs<63>kkent<6E>se. A legt<67>bb ember <20>tm<74>retez<65>st hajt v<>gre
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DVD-k vagy SVCD-k DivX AVI-ba t<>rt<72>n<EFBFBD> konvert<72>l<EFBFBD>sa sor<6F>n.
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<B>Ez helytelen.</B> Miel<65>tt te is ilyen megold<6C>sra vetemedn<64>l, olvasd
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el az <A HREF="#aspect">Aspect ratio meg<65>rz<72>se</A> fejezetet.</P>
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2001-11-20 14:18:17 +00:00
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2002-05-04 16:29:11 +00:00
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<P>Az <20>tm<74>retez<65>st a <I>'scale'</I> nev<65> video filter v<>gzi:
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2003-03-22 12:02:27 +00:00
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<CODE>-vf scale=X:Y</CODE>. A min<69>s<EFBFBD>g<EFBFBD>t pedig az <CODE>-sws</CODE> opci<63>val
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2002-10-06 20:58:07 +00:00
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lehet megadni (l<>sd a manpage-t). Alap<61>rtelmezett a 0: gyors bilinear.</P>
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2001-12-10 17:37:18 +00:00
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2002-10-06 20:58:07 +00:00
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<P>Haszn<EFBFBD>lata:<BR>
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2003-03-22 12:02:27 +00:00
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<CODE> mencoder sample-svcd.mpg -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1300 -vf
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2002-11-11 05:07:26 +00:00
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scale=640:480 -oac copy -o output.avi</CODE></P>
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2001-12-10 17:37:18 +00:00
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2003-02-04 21:45:02 +00:00
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<H2><A NAME=copying>7.4 Stream m<>sol<6F>sa</A></H2>
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2001-12-10 17:37:18 +00:00
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2002-10-06 20:58:07 +00:00
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<P>A <B>MEncoder</B> k<>tf<74>lek<65>ppen tudja a bemeneti stream-eket kezelni:
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2001-12-10 17:37:18 +00:00
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<B>enk<EFBFBD>dolja</B> vagy csak <B><EFBFBD>tm<EFBFBD>solja</B> <20>ket. Ez a r<>sz a <B>m<EFBFBD>sol<EFBFBD>sr<EFBFBD>l</B>
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sz<73>l.</P>
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<UL>
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2002-08-14 20:24:55 +00:00
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<LI><B>Video stream-ek</B> (<CODE>-ovc copy</CODE> opci<63>): <20>rdekes dolgokat
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2001-12-10 17:37:18 +00:00
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lehet vele csin<69>lni :)<BR>
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2002-08-14 20:24:55 +00:00
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Mint p<>ld<6C>ul FLI vagy VIVO vagy MPEG1 video m<>sol<6F>sa AVI file-ba!
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2001-12-10 17:37:18 +00:00
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Persze az ilyen videokat csak az <B>MPlayer</B> tudja lej<65>tszani :) <20>s
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ezeknek a haszna gyakorlatilag nulla. A racion<6F>lis felhaszn<7A>l<EFBFBD>sa ennek
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p<>ld<6C>ul amikor csak az audio stream-et kell enk<6E>dolni (pl t<>m<EFBFBD>r<EFBFBD>tetlen
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PCM-et MP3-ba).</LI>
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2002-08-14 20:24:55 +00:00
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<LI><B>Audio stream-ek</B> (<CODE>-oac copy</CODE> opci<63>): egy<67>rtelm<6C>.
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2003-07-14 07:36:20 +00:00
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Lehets<74>ges az audio streamet egy k<>ls<6C> fileb<65>l (MP3, WAV) venni,
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2002-08-14 20:24:55 +00:00
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ehhez az <CODE>-audiofile <filen<EFBFBD>v></CODE> opci<63>t kell
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haszn<7A>lni.</LI>
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2001-12-10 17:37:18 +00:00
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</UL>
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2003-02-04 21:45:02 +00:00
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<H2><A NAME=fixing>7.5 Hib<69>s index-szel rendelkez<65> AVI-k rendbehoz<6F>sa</A></H2>
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2001-12-18 17:07:21 +00:00
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2002-08-14 20:24:55 +00:00
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<P>A legk<67>nnyebb dolog a vil<69>gon. Egyszer<65>en <20>tm<74>soljuk a video <20>s audio
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streameket, <20>s k<>zben a <B>MEncoder</B> l<>trehozza a megfelel<65> indexet is.
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Ez persze nem tudja kijav<61>tani az esetleges hib<69>kat a video <20>s/vagy audio
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stream-ekben, viszont a hib<69>san interleave-elt fileokat igen.</P>
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2001-12-18 17:07:21 +00:00
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2002-08-14 20:24:55 +00:00
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<P>A parancs: <CODE>mencoder -idx input.avi -ovc copy -oac copy -o output.avi</CODE></P>
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2001-12-18 17:07:21 +00:00
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2001-12-24 23:00:07 +00:00
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2003-02-04 21:45:02 +00:00
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<H3><A NAME=appending>7.5.1 T<>bb AVI file <20>sszef<65>z<EFBFBD>se</A></H3>
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<P>Az index jav<61>t<EFBFBD> funkci<63> mell<6C>khat<61>sk<73>nt megold<6C>st jelent AVI-k <20>sszef<65>z<EFBFBD>s<EFBFBD>re
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is:</P>
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<P>Parancs: <CODE>cat 1.avi 2.avi | mencoder -noidx -ovc copy -oac copy -o
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kimenet.avi -</CODE></P>
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<P>Megjegyz<EFBFBD>s: Az <CODE>1.avi</CODE> <20>s <CODE>2.avi</CODE> file-ok azonos
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codec-kel, felbont<6E>ssal, frame rate-tel kell rendelkeznie, <20>s az
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<CODE>1.avi</CODE>-nak nem szabad hib<69>snak lennie. A hib<69>s file-ok jav<61>t<EFBFBD>s<EFBFBD>nak
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folyamata a 7.5-<2D>s fejezetben van le<6C>rva.</P>
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<H2><A NAME=libavcodec>7.6 Enk<6E>dol<6F>s a <I>libavcodec</I> codec-ekkel</A></H2>
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2001-12-24 23:00:07 +00:00
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2002-10-21 20:59:43 +00:00
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<P>A <A HREF="codecs.html#libavcodec">libavcodec</A>-kel egyszer<65>en lehet k<>dolni
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2002-08-14 20:24:55 +00:00
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j<>n<EFBFBD>h<EFBFBD>ny <20>rdekes video <20>s audio form<72>tumba (jelenleg az audio codec-ek nem
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2002-10-06 20:58:07 +00:00
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t<>mogatottak). A k<>vetkez<65> codec-ekkel lehet enk<6E>dolni:</P>
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2001-12-24 23:00:07 +00:00
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<UL>
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<LI>mjpeg - Motion JPEG</LI>
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2003-09-01 19:47:34 +00:00
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<LI>ljpeg - Lossless JPEG</LI>
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2002-08-14 20:24:55 +00:00
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<LI>h263 - H263</LI>
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2001-12-24 23:00:07 +00:00
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<LI>h263p - H263 Plus</LI>
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2003-01-12 21:26:42 +00:00
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<LI>mpeg4 - ISO szabv<62>nyos MPEG4 (DivX5, XVID kompatibilis)</LI>
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<LI>msmpeg4 - szabv<62>nyos<6F>t<EFBFBD>s el<65>tti MPEG4 (Micro$oft), v3 (alias DivX3)</LI>
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<LI>msmpeg4v2 - szabv<62>nyos<6F>t<EFBFBD>s el<65>tti MPEG4 (Micro$oft), v2 (r<>gi ASF
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file-okban)</LI>
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<LI>wmv1 - Windows Media Video, 1-es verzi<7A> (alias WMV7)</LI>
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2003-09-01 19:47:34 +00:00
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<LI>wmv2 - Windows Media Video, 2-es verzi<7A> (alias WMV8)</LI>
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2001-12-24 23:00:07 +00:00
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<LI>rv10 - egy r<>gi RealVideo codec</LI>
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2003-09-01 19:47:34 +00:00
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<LI>mpeg1video - MPEG1 video</LI>
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<LI>mpeg2video - MPEG2 video</LI>
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2003-01-12 21:26:42 +00:00
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<LI>huffyuv - vesztes<65>gmentes t<>m<EFBFBD>r<EFBFBD>t<EFBFBD>s</LI>
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2003-09-01 19:47:34 +00:00
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<LI>asv1 - ASUS Video v1</LI>
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<LI>asv2 - ASUS Video v2</LI>
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<LI>ffv1 - az FFmpeg saj<61>t vesztes<65>gmentes codec-e</LI>
|
2001-12-24 23:00:07 +00:00
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</UL>
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<P>Az els<6C> oszlopban felsorolt codec-eket kell <20>tadni a
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2002-10-06 20:58:07 +00:00
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<CODE>vcodec</CODE> opci<63>nak, pl: <CODE>-lavcopts vcodec=msmpeg4</CODE></P>
|
2002-03-03 10:54:03 +00:00
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2002-08-14 20:24:55 +00:00
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<P>Egy p<>lda, MJPEG t<>m<EFBFBD>r<EFBFBD>t<EFBFBD>ssel:<BR>
|
2003-07-09 20:10:48 +00:00
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<CODE> mencoder dvd://2 -o title2.avi -ovc lavc
|
2002-10-06 20:58:07 +00:00
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-lavcopts vcodec=mjpeg -oac copy</CODE></P>
|
2002-08-14 20:24:55 +00:00
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2002-03-03 10:54:03 +00:00
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2003-02-04 21:45:02 +00:00
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<H2><A NAME=image_files>7.7 Enk<6E>dol<6F>s t<>bb bemeneti file-b<>l (JPEG, PNG)</A></H2>
|
2002-03-03 10:54:03 +00:00
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<P>A <B>MEncoder</B> k<>pes t<>bb JPEG vagy PNG file-b<>l filmet l<>trehozni.
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Egyszer<65> framecopy haszn<7A>lat<61>val pedig MJPEG (Motion JPEG) vagy MPNG
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(Motion PNG) filmek hozhat<61>k l<>tre.</P>
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<P><B><I>A folyamat magyar<61>zata</I></B></P>
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2002-03-13 15:33:55 +00:00
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<P>El<EFBFBD>sz<EFBFBD>r a <B>MEncoder</B> <I>dek<EFBFBD>dolja</I> a bemeneti fileokat a
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<CODE>libjpeg</CODE> seg<65>ts<74>g<EFBFBD>vel (PNG-k dek<65>dol<6F>s<EFBFBD>t a libpngvel v<>gzi).
|
2002-03-03 10:54:03 +00:00
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</P>
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<P>A <B>MEncoder</B> ezut<75>n a kiv<69>lasztott kimeneti codecnek adja a
|
2003-01-12 21:26:42 +00:00
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dek<65>dolt k<>pet (pl DivX4, Xvid, ffmpeg msmpeg4, stb).</P>
|
2002-03-03 10:54:03 +00:00
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<P><B><I>P<EFBFBD>ld<EFBFBD>k</I></B></P>
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2003-01-28 17:16:23 +00:00
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<P>Az <CODE>-mf</CODE> opci<63> magyar<61>zata a manpage-ben tal<61>lhat<61>.</P>
|
2002-03-03 10:54:03 +00:00
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2002-10-06 20:58:07 +00:00
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<P><I>DivX4 film l<>trehoz<6F>sa az aktu<74>lis k<>nyvt<76>rban tal<61>lhat<61> <20>sszes JPEG fileb<65>l:</I><BR>
|
2003-01-25 10:03:35 +00:00
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<CODE>mencoder -mf on:w=800:h=600:fps=25 -ovc divx4 -o
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kimenet.avi \*.jpg</CODE></P>
|
2002-03-03 10:54:03 +00:00
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2002-10-06 20:58:07 +00:00
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<P><I>DivX4 film l<>trehoz<6F>sa n<>h<EFBFBD>ny JPEG fileb<65>l:</I><BR>
|
2003-01-25 10:03:35 +00:00
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<CODE>mencoder -mf on:w=800:h=600:fps=25 -ovc divx4 -o
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kimenet.avi frame001.jpg,frame002.jpg</CODE></P>
|
2002-03-28 17:30:46 +00:00
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2002-10-06 20:58:07 +00:00
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<P><I>MJPEG (Motion JPEG) film l<>trehoz<6F>sa az aktu<74>lis k<>nyvt<76>rban tal<61>lhat<61> <20>sszes JPEG fileb<65>l:</I><BR>
|
2003-01-25 10:03:35 +00:00
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<CODE>mencoder -mf on:w=800:h=600:fps=25 -ovc copy
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-o kimenet.avi \*.jpg</CODE></P>
|
2002-03-03 10:54:03 +00:00
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2002-10-06 20:58:07 +00:00
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<P><I>T<EFBFBD>m<EFBFBD>r<EFBFBD>tetlen film l<>trehoz<6F>sa az aktu<74>lis k<>nyvt<76>rban tal<61>lhat<61> <20>sszes PNG fileb<65>l:</I><BR>
|
2003-01-29 13:53:40 +00:00
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<CODE>mencoder -mf on:w=800:h=600:fps=25:type=png -ovc rawrgb -o
|
2003-01-25 10:03:35 +00:00
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kimenet.avi \*.png</CODE></P>
|
2002-03-03 10:54:03 +00:00
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2003-02-04 21:45:02 +00:00
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<P><B>Megjegyz<EFBFBD>s:</B> a sz<73>less<73>gnek 4-gyel oszthat<61>nak kell lennie, ez a RAW
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RGB AVI form<72>tum egyik megk<67>t<EFBFBD>se.</P>
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2002-10-06 20:58:07 +00:00
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<P><I>MPNG (Motion PNG) film l<>trehoz<6F>sa az aktu<74>lis k<>nyvt<76>rban tal<61>lhat<61> <20>sszes PNG fileb<65>l:</I><BR>
|
2003-01-25 10:03:35 +00:00
|
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|
<CODE>mencoder -mf on:w=800:h=600:fps=25:type=png -ovc copy
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|
-o kimenet.avi \*.png</CODE></P>
|
2001-12-24 23:00:07 +00:00
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|
2003-02-04 21:45:02 +00:00
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<H2><A NAME=vobsub>7.8 DVD feliratok VOBsub form<72>tum<75>v<EFBFBD> alak<61>t<EFBFBD>sa</A></H2>
|
2002-08-14 20:24:55 +00:00
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|
2002-10-06 20:58:07 +00:00
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<P>A <B>MEncoder</B> k<>pes DVD-r<>l kivonni a feliratot, <20>s <20>talak<61>tani
|
2002-08-14 20:24:55 +00:00
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Vobsub form<72>tum<75> feliratt<74>. Ezek egy <CODE>.idx</CODE> <20>s egy
|
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|
<CODE>.sub</CODE> kiterjeszt<7A>s<EFBFBD> file-b<>l <20>llnak, gyakran egyetlen
|
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|
<CODE>.rar</CODE> arch<63>vba t<>m<EFBFBD>r<EFBFBD>tve. Az <B>MPlayer</B> k<>pes az ilyen
|
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|
feliratok megjelen<65>t<EFBFBD>s<EFBFBD>re a <CODE>-vobsub</CODE> <20>s <CODE>-vobsubid</CODE>
|
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opci<63>kkal.</P>
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<P>Az alap filenevet (teh<65>t kiterjeszt<7A>s n<>lk<6C>l) a <CODE>-vobsubout</CODE>
|
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|
opci<63>val adhatod meg. Az index sz<73>mot amin el lesz t<>rolva a felirat,
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pedig a <CODE>-vobsuboutindex</CODE> opci<63>val.</P>
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<P>Ha a bemeneti file nem DVD, haszn<7A>ld az <CODE>-ifo</CODE> opci<63>t, amivel
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megadhatod hogy melyik file legyen <CODE>.idx</CODE>-<2D> alak<61>tva.</P>
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<P>Ha a bemeneti file nem DVD, de nincs meg hozz<7A> az <CODE>.ifo</CODE> file,
|
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haszn<7A>ld a <CODE>-vobsubid</CODE> opci<63>t a haszn<7A>land<6E> nyelv azonos<6F>t<EFBFBD>j<EFBFBD>nak
|
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kiv<69>laszt<7A>s<EFBFBD>hoz.</P>
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<P>Minden egyes fut<75>s hozz<7A>f<EFBFBD>zi a kimenetet az esetlegesen m<>r l<>tez<65>
|
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kimeneti file-hoz, <20>gy aj<61>nlott k<>r<EFBFBD>ln<6C>zni ind<6E>t<EFBFBD>s el<65>tt.</P>
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<P><B>P<EFBFBD>ld<EFBFBD>k</B></P>
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<P><I>K<EFBFBD>t felirat m<>sol<6F>sa DVD-r<>l, 3 menetes enk<6E>dol<6F>s k<>zben</I><BR>
|
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|
<CODE>rm subtitles.idx subtitles.sub</CODE><BR>
|
2003-07-09 20:10:48 +00:00
|
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|
<CODE>mencoder dvd://1 -vobsubout subtitles -vobsuboutindex 0
|
2002-10-06 20:58:07 +00:00
|
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|
-sid 2 -o frameno.avi -ovc frameno -oac mp3lame -lameopts vbr=3</CODE><BR>
|
2004-01-06 13:37:55 +00:00
|
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|
<CODE>mencoder dvd://1 -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vpass=1</CODE><BR>
|
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|
<CODE>mencoder dvd://1 -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vpass=2
|
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|
-vobsubout subtitles -vobsuboutindex 1 -sid 5</CODE></P>
|
2002-08-14 20:24:55 +00:00
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<P><I>Francia nyelv<6C> felirat m<>sol<6F>sa MPEG-b<>l</I><BR>
|
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|
<CODE>rm subtitles.idx subtitles.sub</CODE><BR>
|
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|
<CODE>mencoder movie.mpg -ifo movie.ifo -vobsubout subtitles
|
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|
-vobsuboutindex 0 -vobsuboutid fr -sid 1</CODE></P>
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|
2003-02-04 21:45:02 +00:00
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<H2><A NAME=aspect>7.9 Aspect ratio meg<65>rz<72>se</A></H2>
|
2002-11-23 21:51:31 +00:00
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<P>A DVD-k <20>s az SVCD-k (teh<65>t az MPEG1/2 file-ok) tartalmazz<7A>k azt az <20>rt<72>ket
|
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amib<69>l a lej<65>tsz<73> tudni fogja merre <20>s mennyire kell a k<>pet sz<73>th<74>zni,
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hogy ne toj<6F>sfej<65> emberek ugr<67>ljanak a k<>pen (p<>ld<6C>ul: 480x480 + 4:3 =
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640x480). Viszont amikor az ilyen file-okat AVI-ba (DivX) konvert<72>ljuk,
|
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szembe tal<61>ljuk magunkat a probl<62>m<EFBFBD>val miszerint az AVI form<72>tum
|
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|
nem k<>pes ezt az <20>rt<72>ket (aspect ratio) elt<6C>rolni. A filmek felbont<6E>s<EFBFBD>nak
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<20>tm<74>retez<65>se undor<6F>t<EFBFBD>, <20>s id<69>ig<69>nyes feladat, kell h<>t legyen egy jobb
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megold<6C>s!</P>
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<P>Van is.</P>
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<P>Az MPEG4 form<72>tumnak egyik egyed<65>l<EFBFBD>ll<6C> tulajdons<6E>ga, hogy bele<6C>rhat<61> az
|
2003-09-01 19:47:34 +00:00
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|
aspect ratio <20>rt<72>ke (csak<61>gy mint az MPEG1/2, illetve H263 file-okn<6B>l). Ennek
|
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|
egyetlen h<>tul<75>t<EFBFBD>je, hogy jelenleg az MPlayer az egyetlen lej<65>tsz<73> amelynek
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|
megvan ez a k<>pess<73>ge.</P>
|
2002-11-23 21:51:31 +00:00
|
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|
2003-09-01 19:47:34 +00:00
|
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|
<P>A haszn<7A>lata csakis a <a href="codecs.html#libavcodec">libavcodec</a> <CODE>mpeg4</CODE> codec-<2D>vel
|
2002-11-23 21:51:31 +00:00
|
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|
lehets<74>ges.</P>
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<P>Semmik<EFBFBD>ppen ne felejtsd el lev<65>gni a film tetej<65>r<EFBFBD>l <20>s alj<6C>r<EFBFBD>l a fekete
|
2002-12-07 21:35:10 +00:00
|
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|
s<>vokat. Olvasd el a manpage-ben, hogy hogyan kell haszn<7A>lni a
|
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|
<CODE>cropdetect</CODE> <20>s a <CODE>crop</CODE> filtereket.</P>
|
2002-11-23 21:51:31 +00:00
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<H4>Haszn<EFBFBD>lata:</H4>
|
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|
<P><CODE>$ mencoder sample-svcd.mpg -ovc lavc -lavcopts
|
2003-05-19 06:54:50 +00:00
|
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|
|
vcodec=mpeg4:autoaspect -vf crop=714:548:0:14 -oac copy -o output.avi</CODE></P>
|
2002-11-23 21:51:31 +00:00
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|
2001-11-20 14:18:17 +00:00
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|
2003-09-01 19:47:34 +00:00
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|
<H2><A NAME=custommatrices>7.10 Saj<61>t inter/intra m<>trixok</A></H2>
|
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|
<P>A <A HREF="codecs.html#libavcodec">libavcodec</A> ezen k<>pess<73>g<EFBFBD>nek
|
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|
kihaszn<7A>l<EFBFBD>s<EFBFBD>val be lehet <20>ll<6C>tani saj<61>t inter (I, azaz kulcs k<>pkock<63>k),
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|
<20>s intra (P k<>pkock<63>k) m<>trixok haszn<7A>lat<61>t. Sok codec t<>mogatja, amik
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|
k<>z<EFBFBD>l az <CODE>mpeg1video</CODE> <20>s az <CODE>mpeg2video</CODE> bizonyosan
|
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|
m<>k<EFBFBD>dik.</P>
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<P>A funkci<63> tipikusan a <A HREF="http://www.kvcd.net/">KVCD</A>
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specifik<69>ci<63>hoz illeszked<65> m<>trixok be<62>ll<6C>t<EFBFBD>s<EFBFBD>ra haszn<7A>lhat<61>.</P>
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<P>A <B>KVCD "Notch" Quantization Matrix</B>:</P>
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<P><I>Intra:</I>
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<PRE>
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8 9 12 22 26 27 29 34
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9 10 14 26 27 29 34 37
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12 14 18 27 29 34 37 38
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22 26 27 31 36 37 38 40
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26 27 29 36 39 38 40 48
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27 29 34 37 38 40 48 58
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29 34 37 38 40 48 58 69
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34 37 38 40 48 58 69 79
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</PRE>
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</P>
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<P>
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<I>Inter:</I>
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<PRE>
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16 18 20 22 24 26 28 30
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18 20 22 24 26 28 30 32
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20 22 24 26 28 30 32 34
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22 24 26 30 32 32 34 36
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24 26 28 32 34 34 36 38
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26 28 30 32 34 36 38 40
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28 30 32 34 36 38 42 42
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30 32 34 36 38 40 42 44
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</PRE>
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</P>
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<H4>Haszn<EFBFBD>lata:</H4>
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<P><CODE>$ mencoder bemenet.avi -o kimenet.avi -oac copy -ovc lavc -lavcopts
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inter_matrix=...:intra_matrix=...</CODE></P>
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<P><CODE>$ mencoder bemenet.avi -ovc lavc -lavcopts
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vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
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12,14,18,27,29,34,37,38,22,26,27,31,36,37,38,40,26,27,29,36,39,38,40,48,27,
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29,34,37,38,40,48,58,29,34,37,38,40,48,58,69,34,37,38,40,48,58,69,79
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:inter_matrix=16,18,20,22,24,26,28,30,18,20,22,24,26,28,30,32,20,22,24,26,
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28,30,32,34,22,24,26,30,32,32,34,36,24,26,28,32,34,34,36,38,26,28,30,32,34,
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36,38,40,28,30,32,34,36,38,42,42,30,32,34,36,38,40,42,44 -oac copy -o
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svcd.mpg</CODE></P>
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2001-11-20 14:18:17 +00:00
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