[Mplayer-cvslog] CVS: main/DOCS documentation.html,1.300,1.301 codecs.html,1.84,1.85 video.html,1.97,1.98
Diego Biurrun CVS
diego at mplayerhq.hu
Wed Sep 4 22:22:19 CEST 2002
Update of /cvsroot/mplayer/main/DOCS
In directory mail:/var/tmp.root/cvs-serv32484
Modified Files:
documentation.html codecs.html video.html
Log Message:
DXR3 docs updated. Patch by David Holm <david at realityrift.com>, further
spelling/consistency fixes by me.
Index: documentation.html
===================================================================
RCS file: /cvsroot/mplayer/main/DOCS/documentation.html,v
retrieving revision 1.300
retrieving revision 1.301
diff -u -r1.300 -r1.301
--- documentation.html 29 Aug 2002 13:04:01 -0000 1.300
+++ documentation.html 4 Sep 2002 20:22:07 -0000 1.301
@@ -150,7 +150,7 @@
<LI><A HREF="video.html#vidix">2.3.1.14 VIDIX</A></LI>
<LI><A HREF="video.html#zr">2.3.1.15 Zr</A></LI>
<LI><A HREF="video.html#dvb">2.3.1.16 DVB</A></LI>
- <LI><A HREF="video.html#dxr3">2.3.1.17 DXR3</A></LI>
+ <LI><A HREF="video.html#dxr3">2.3.1.17 DXR3/Hollywood+</A></LI>
<LI><A HREF="video.html#tv-out">2.3.1.A TV-out support</A>
<UL>
<LI><A HREF="video.html#tv-out_matrox">2.3.1.A.1 Matrox G400 cards</A></LI>
Index: codecs.html
===================================================================
RCS file: /cvsroot/mplayer/main/DOCS/codecs.html,v
retrieving revision 1.84
retrieving revision 1.85
diff -u -r1.84 -r1.85
--- codecs.html 31 Aug 2002 13:05:33 -0000 1.84
+++ codecs.html 4 Sep 2002 20:22:07 -0000 1.85
@@ -335,8 +335,9 @@
<P>You need an AC3 capable sound card, with digital out (SP/DIF). The card's
driver must properly support the AFMT_AC3 format (C-Media does). Connect
your AC3 decoder to the SP/DIF output, and use the <CODE>-ac hwac3</CODE>
- option. It is experimental but known to work with C-Media cards and
- Soundblaster Live! using ALSA (but not OSS) drivers.</P>
+ option. It is experimental but known to work with C-Media cards,
+ Soundblaster Live! using ALSA (but not OSS) drivers and DXR3/Hollywood+ MPEG
+ decoder cards.</P>
<H4><A NAME="libmad">2.2.2.3 libmad support</A></H4>
Index: video.html
===================================================================
RCS file: /cvsroot/mplayer/main/DOCS/video.html,v
retrieving revision 1.97
retrieving revision 1.98
diff -u -r1.97 -r1.98
--- video.html 31 Aug 2002 13:10:29 -0000 1.97
+++ video.html 4 Sep 2002 20:22:07 -0000 1.98
@@ -1176,53 +1176,68 @@
decompression).</P>
-<H4><A NAME="dxr3">2.3.1.17 DXR3</A></H4>
+<H4><A NAME="dxr3">2.3.1.17 DXR3/Hollywood+</A></H4>
<P><B>MPlayer</B> supports hardware accelerated playback with the Creative DXR3
- and Sigma Designs Hollywood Plus cards.</P>
+ and Sigma Designs Hollywood Plus cards. These cards both use the em8300 MPEG
+ decoder chip from Sigma Designs.</P>
<P>First of all you will need properly installed DXR3/H+ drivers, version
0.12.0 or later. You can find the drivers and installation instructions at
the <A HREF="http://dxr3.sourceforge.net/">DXR3 & Hollywood Plus for
Linux</A> site. Configure should detect your card automatically, compilation
- should go without any problems.</P>
+ should go without problems.</P>
<H4>Usage:</H4>
<DL>
- <DT><CODE>-vo dxr3:<noprebuf>:<codec>:<device></CODE></DT>
- <DD>Where <CODE><noprebuf></CODE> specifies turning off prebuffering.
- This is done automatically on Athlons. If playback is out of sync try
- disabling prebuffering. If noprebuf is left out prebuffering is enabled
- (except on Athlons).
- <BR>
- <CODE><codec></CODE> = fame/avcodec, avcodec produces better quality
- output, but fame is faster for those of you with slow machines. The default is
- to use libavcodec. Note that you need libavcodec properly installed (read
- DOCS/codecs.html).
- <BR>
+ <DT><CODE>-vo dxr3:noprebuf:<device></CODE></DT>
+ <DD><CODE>noprebuf</CODE> turns off prebuffering. Prebuffering is a feature
+ of the em8300 chip that enables it to hold more than one frame of video at
+ a time. This means that when you are running with prebuffering (default)
+ <B>MPlayer</B> will try to keep the video buffer filled with data at all
+ times. If you are on a slow machine <B>MPlayer</B> will probably use close
+ to, or precisely 100% of CPU. This is especially common if you play pure MPEG
+ streams (like DVDs, SVCDs a.s.o.) since <B>MPlayer</B> will not have to
+ reencode it to MPEG it will fill the buffer very fast.<BR>
+ With prebuffering video playback is <B>much</B> less sensitive to other
+ programs hogging the CPU, it will not drop frames unless applications hog
+ the CPU for a long time.<BR>
+ Prebuffering does not work on all machines (especially Athlons where it is
+ turned off automatically). If you experience problems with video/audio sync
+ use <CODE>noprebuf</CODE>. When running without prebuffering the em8300 is
+ much more sensitive to CPU load, so it is highly suggested that you turn on
+ <B>MPlayer's</B> <CODE>-framedrop</CODE> option to avoid further loss of
+ sync.<BR>
<CODE><device></CODE> = device number to use if you have more than one
em8300 card.
<BR>
Any of these options may be left out, but they must be specified in this
- order, i.e. <CODE>dxr3:fame</CODE> works, <CODE>dxr3:1</CODE> works, but
- <CODE>dxr3:1:avcodec</CODE> will not.</DD>
+ exact order, i.e. <CODE>dxr3:noprebuf</CODE> works, <CODE>dxr3:1</CODE>
+ works, but <CODE>dxr3:1:noprebuf</CODE> will not.</DD>
<DT><CODE>-ao oss:/dev/em8300_ma-X</CODE></DT>
<DD>For audio output, where <CODE>X</CODE> is the device number
(0 if one card).</DD>
- <DT><CODE>-ac hwac3</CODE></DT>
- <DD>For digital instead of analog audio output.</DD>
-
- <DT><CODE>-vc mpegpes</CODE></DT>
- <DD>Force hardware acceleration, only works with MPEG1/2.</DD>
-
<DT><CODE>-aop list=resample:fout=xxxxx</CODE></DT>
- <DD>If sample rate is below 44100Hz, select either 44100Hz or 48000Hz
- depending on which one matches closest. I.e. if the movie uses 22050Hz use
- 44100Hz as 44100 / 2 = 22050, if it is 24000Hz use 48000Hz as 48000 / 2 = 24000
- and so on. This does not work with digital audio output
- (<CODE>-ac hwac3</CODE>).</DD>
+ <DD>The em8300 cannot play back samplerates lower than 44100Hz. If the sample
+ rate is below 44100Hz select either 44100Hz or 48000Hz depending on which
+ one matches closest. I.e. if the movie uses 22050Hz use 44100Hz as
+ 44100 / 2 = 22050, if it is 24000Hz use 48000Hz as 48000 / 2 = 24000 and so
+ on. This does not work with digital audio output (<CODE>-ac hwac3</CODE>).</DD>
+
+ <DT><CODE>-vop lavc/fame</CODE></DT>
+ <DD>To watch non-MPEG content on the em8300 (i.e. DivX or RealVideo) you have
+ to specify an MPEG1 video filter such as libavcodec (lavc) or libfame
+ (fame). At the moment lavc is both faster and gives better image quality, it
+ is suggested that you use that unless you have problems with it. See the man
+ page for further info about <CODE>-vop lavc/fame</CODE>.</DD>
+
+ <DT><CODE>-ac hwac3</CODE></DT>
+ <DD>The em8300 supports playing back AC3 audio (surround sound) through the
+ digital audio output of the card. Read
+ <A HREF="codecs.html#hardware_ac3">hardware AC3</A> section for further
+ information on AC3.</DD>
</DL>
<H4>Overlay</H4>
@@ -1236,14 +1251,16 @@
<P>MPEG1/2 content should now automatically be detected by <B>MPlayer</B> and
it will use the hardware acceleration of the DXR3 to play it. If not, you can
force it to hardware acceleration with <CODE>-vc mpegpes</CODE>. Also, if you
- plan to use any postprocessing filters you must use <CODE>-vc
- mpeg12</CODE>.</P>
+ plan to use postprocessing filters you must use <CODE>-vc mpeg12</CODE>.</P>
<P>In some instances, subtitles may not appear properly in sync with the A/V
stream when using hardware decoding (<CODE>-vc mpegpes</CODE>). This is a
known bug. The em8300 will also improperly handle subtitles that are too big,
and may hang for a second or two. At this time, the only workaround is to use
- <CODE>-vc mpeg12</CODE> when viewing DVDs with subtitles.</P>
+ <CODE>-vc mpeg12</CODE> when viewing DVDs with subtitles. When running with
+ <CODE>-vc mpeg12</CODE> <B>MPlayer</B> will reencode video to MPEG (even if it
+ already is MPEG). This means that it will need more CPU power, and you might
+ loose some picture quality.</P>
<H4><A NAME="tv-out">2.3.1.A TV-out support</A></H4>
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