It is VERY recommended to check if the MTRR registers are set up properly, because they can give a big performance boost.
Do a 'cat /proc/mtrr':
--($:~)-- cat /proc/mtrr
reg00: base=0xe4000000 (3648MB), size= 16MB: write-combining, count=9
reg01: base=0xd8000000 (3456MB), size= 128MB: write-combining, count=1
It's right, shows my Matrox G400 with 16MB memory. I did this from XFree 4.x.x , which sets up MTRR registers automatically.
If nothing worked, you have to do it manually. First, you have to find the base address. You have 3 ways to find it:
(--) SVGA: PCI: Matrox MGA G400 AGP rev 4, Memory @ 0xd8000000, 0xd4000000
(--) SVGA: Linear framebuffer at 0xD8000000
01:00.0 VGA compatible controller: Matrox Graphics, Inc.: Unknown device 0525
Memory at d8000000 (32-bit, prefetchable)
dmesg):
mga_mem_base = d8000000
Then let's find the memory size. This is very easy, just convert video ram size to hexadecimal, or use this table:
| 1 MB | 0x100000 | ||
| 2 MB | 0x200000 | ||
| 4 MB | 0x400000 | ||
| 8 MB | 0x800000 | ||
| 16 MB | 0x1000000 | ||
| 32 MB | 0x2000000 |
You know base address and memory size, let's setup MTRR registers! For example, for the Matrox card above (base=0xd8000000) with 32MB ram (size=0x2000000) just execute:
echo "base=0xd8000000 size=0x2000000 type=write-combining" >| /proc/mtrr
Not all CPUs support MTRRs. For example older K6-2's [around 266MHz,
stepping 0] doesn't support MTRR, but stepping 12's do ('cat
/proc/cpuinfo' to check it').
Under XFree86 4.0.2 or newer, you can use your card's hardware YUV routines using the XVideo extension. This is what the option '-vo xv' uses. Also, this is driver supports adjusting brightness/contrast/hue/etc (unless you use the old, slow DirectShow DivX codec, which supports it everywhere), see the man page.
In order to make this work, be sure to check the following:
(II) Loading extension XVideo
in /var/log/XFree86.0.log
NOTE: this loads only the XFree86's extension. In a good install, this is always loaded, and doesn't mean that the card's XVideo support is loaded!
X-Video Extension version 2.2 screen #0 Adaptor #0: "Savage Streams Engine" number of ports: 1 port base: 43 operations supported: PutImage supported visuals: depth 16, visualID 0x22 depth 16, visualID 0x23 number of attributes: 5 (...) Number of image formats: 7 id: 0x32595559 (YUY2) guid: 59555932-0000-0010-8000-00aa00389b71 bits per pixel: 16 number of planes: 1 type: YUV (packed) id: 0x32315659 (YV12) guid: 59563132-0000-0010-8000-00aa00389b71 bits per pixel: 12 number of planes: 3 type: YUV (planar) (...etc...)
It must support YUY2 packed, and YV12 planar pixel formats to be usable with MPlayer.
Older 3dfx drivers were known to have problems with XVideo acceleration, it didn't support either YUY2 or YV12, and so. Verify that you have XFree86 version 4.2.0 or greater, it works OK with YV12 and YUY2. Previous versions, including 4.1.0, crash with YV12. If you experience strange effects using -vo xv, try SDL (it has XVideo too) and see if it helps. Check the SDL section for details.
OR, try the NEW -vo tdfxfb driver! See the tdfxfb section.
S3 Savage3D's should work fine, but for Savage4, use XFree86 version 4.0.3 or greater (in case of image problems, try 16bpp). As for S3 Virge.. there is xv support, but the card itself is very slow, so you better sell it.
NOTE: it's currently unclear which Savage models lack YV12 support, and convert by driver (slow). If you suspect your card, get a newer driver, or ask politely on the mplayer-users mailing list for an MMX/3DNow enabled driver.
nVidia isn't a very good choice under Linux (according to nVidia, this is not true).. You'll have to use the binary closed-source nVidia driver, available at nVidia's web site. The standard XFree86 driver doesn't support XVideo for these cards, due to nVidia's closed sources/specifications.
As far as I know the latest XFree86 driver contains XVideo support for GeForce 2 and 3.
Riva128 cards don't have XVideo support even with the nVidia driver :( Complain to nVidia.
These cards can be found in many laptops. Unfortunately, the driver in X 4.2.0 can't do Xv, but we have a modified, Xv-capable driver for you. Download from here. Driver provided by Stefan Seyfried.
To allow playback of DVD sized content change your XF86Config like this:
Section "Device"
[...]
Driver "neomagic"
Option "OverlayMem" "829440"
[...]
EndSection
If you want to use xv with a trident card, provided that it doesn't work with 4.1.0, install XFree 4.2.0. 4.2.0 adds support for fullscreen xv support with the Cyberblade XP card.
This document tries to explain in some words what DGA is in general and what the DGA video output driver for MPlayer can do (and what it can't).
DGA is short for Direct Graphics Access and is a means for a program to bypass the X-Server and directly modifying the framebuffer memory. Technically spoken this happens by mapping the framebuffer memory into the memory range of your process. This is allowed by the kernel only if you have superuser privileges. You can get these either by logging in as root or by setting the SUID bit on the MPlayer executable (not recommended).
There are two versions of DGA: DGA1 is used by XFree 3.x.x and DGA2 was introduced with XFree 4.0.1.
DGA1 provides only direct framebuffer access as described above. For switching the resolution of the video signal you have to rely on the XVidMode extension.
DGA2 incorporates the features of XVidMode extension and also allows switching the depth of the display. So you may, although basically running a 32 bit depth X server, switch to a depth of 15 bits and vice versa.
However DGA has some drawbacks. It seems it is somewhat dependent on the graphics chip you use and on the implementation of the X server's video driver that controls this chip. So it does not work on every system ...
First make sure X loads the DGA extension, see in /var/log/XFree86.0.log:
(II) Loading extension XFree86-DGA
See, XFree86 4.0.x or greater is VERY RECOMMENDED! MPlayer's DGA driver is autodetected on ./configure, or you can force it with --enable-dga.
If the driver couldn't switch to a smaller resolution, experiment with switches -vm (only with X 3.3.x), -fs, -bpp, -zoom to find a video mode that the movie fits in. There is no converter right now :(
Become root. DGA needs root access to be able to write directly to video memory. If you want to run it as user, then install MPlayer SUID root:
chown root /usr/local/bin/mplayer
chmod 750 /usr/local/bin/mplayer
chmod +s /usr/local/bin/mplayer
Now it works as a simple user, too.
Warning: security risk
This is a big security risk! Never do this on a server or on a computer that can be accessed by other people because they can gain root privileges through SUID root MPlayer.
Now use the -vo dga option, and there you go (hope so :))!
You should also try if the -vo sdl:dga option works for you. It's
much faster.
The DGA driver allows for switching the resolution of the output signal.
This avoids the need for doing (slow) software scaling and at the same time
provides a fullscreen image. Ideally it would switch to the exact resolution
(except for honoring aspect ratio) of the video data, but the X server only
allows switching to resolutions predefined in
/etc/X11/XF86Config (/etc/X11/XF86Config-4 for
XFree 4.0.X respectively). Those are defined by so-called modelines and
depend on the capabilities of your video hardware. The X server scans this
config file on startup and disables the modelines not suitable for your
hardware. You can find out which modes survive with the X11 log file. It can
be found at:
/var/log/XFree86.0.log.
See appendix A for some sample modeline definitions.
DGA is used in two places with MPlayer: The SDL driver can be made to make use of it (-vo sdl:dga) and within the DGA driver (-vo dga). The above said is true for both; in the following sections I'll explain how the DGA driver for MPlayer works.
The DGA driver is invoked by specifying -vo dga at the command line. The default behavior is to switch to a resolution matching the original resolution of the video as close as possible. It deliberately ignores the -vm and -fs switches (enabling of video mode switching and fullscreen) - it always tries to cover as much area of your screen as possible by switching the video mode, thus refraining to use a single additional cycle of your CPU to scale the image. If you don't like the mode it chooses you may force it to choose the mode matching closest the resolution you specify by -x and -y. By providing the -v option, the DGA driver will print, among a lot of other things, a list of all resolutions supported by your current XF86-Config file. Having DGA2 you may also force it to use a certain depth by using the -bpp option. Valid depths are 15, 16, 24 and 32. It depends on your hardware whether these depths are natively supported or if a (possibly slow) conversion has to be done.
If you should be lucky enough to have enough offscreen memory left to put a whole image there, the DGA driver will use doublebuffering, which results in much smoother movie replaying. It will tell you whether double- buffering is enabled or not.
Doublebuffering means that the next frame of your video is being drawn in some offscreen memory while the current frame is being displayed. When the next frame is ready, the graphics chip is just told the location in memory of the new frame and simply fetches the data to be displayed from there. In the meantime the other buffer in memory will be filled again with new video data.
Doublebuffering may be switched on by using the option -double and may be disabled with -nodouble. Current default option is to disable doublebuffering. When using the DGA driver, onscreen display (OSD) only works with doublebuffering enabled. However, enabling doublebuffering may result in a big speed penalty (on my K6-II+ 525 it used an additional 20% of CPU time!) depending on the implementation of DGA for your hardware.
Generally spoken, DGA framebuffer access should be at least as fast as using the X11 driver with the additional benefit of getting a fullscreen image. The percentage speed values printed by MPlayer have to be interpreted with some care, as for example, with the X11 driver they do not include the time used by the X-Server needed for the actual drawing. Hook a terminal to a serial line of your box and start top to see what is really going on in your box...
Generally spoken, the speedup done by using DGA against 'normal' use of X11 highly depends on your graphics card and how well the X-Server module for it is optimized.
If you have a slow system, better use 15 or 16bit depth since they require only half the memory bandwidth of a 32 bit display.
Using a depth of 24bit is even a good idea if your card natively just supports 32 bit depth since it transfers 25% less data compared to the 32/32 mode.
I've seen some AVI files already be replayed on a Pentium MMX 266. AMD K6-2 CPUs might work at 400 MHZ and above.
Well, according to some developers of XFree, DGA is quite a beast. They tell you better not to use it. Its implementation is not always flawless with every chipset driver for XFree out there.
Section "Modes"
Identifier "Modes[0]"
Modeline "800x600" 40 800 840 968 1056 600 601 605 628
Modeline "712x600" 35.0 712 740 850 900 400 410 412 425
Modeline "640x480" 25.175 640 664 760 800 480 491 493 525
Modeline "400x300" 20 400 416 480 528 300 301 303 314 Doublescan
Modeline "352x288" 25.10 352 368 416 432 288 296 290 310
Modeline "352x240" 15.750 352 368 416 432 240 244 246 262 Doublescan
Modeline "320x240" 12.588 320 336 384 400 240 245 246 262 Doublescan
EndSection
These entries work fine with my Riva128 chip, using nv.o X server driver module.
If you experience troubles with the DGA driver please feel free to file a bug report to me (e-mail address below). Please start MPlayer with the -v option and include all lines in the bug report that start with vo_dga:
Please do also include the version of X11 you are using, the graphics card and your CPU type. The X11 driver module (defined in XF86-Config) might also help. Thanks!
Acki (acki@acki-netz.de, www.acki-netz.de)
SDL (Simple Directmedia Layer) is basically a unified video/audio interface. Programs that use it know only about SDL, and not about what video or audio driver does SDL actually use. For example a Doom port using SDL can run on svgalib, aalib, X, fbdev, and others, you only have to specify the (for example) video driver to use with the SDL_VIDEODRIVER environment variable. Well, in theory.
With MPlayer, we used its X11 driver's software scaler ability for cards/drivers that doesn't support XVideo, until we made our own (faster, nicer) software scaler. Also we used its aalib output, but now we have ours which is more comfortable. Its DGA mode was better than ours, until recently. Get it now? :)
It also helps with some buggy drivers/cards if the video is jerky (not slow system problem), or audio is lagging.
SDL video output supports displaying subtitles under the movie, on the (if present) black bar.
There are several command line switches for SDL:
-vo sdl:name-ao sdl:name-noxv-forcexvSDL Keys: | |||
F | toggles fullscreen/windowed mode | ||
C | cycles available fullscreen modes | ||
W/S | mappings for * and / (mixer control) | ||
You'll have to install svgalib and its development package in order for MPlayer build its SVGAlib driver (autodetected, but can be forced), and don't forget to edit /etc/vga/libvga.config to suit your card & monitor.
Be sure not to use the -fs switch, since it toggles the usage of the software
scaler, and it's slow. If you really need it, use the -sws 4
option which will produce bad quality, but is somewhat faster.
SVGAlib incorporates EGAlib, and MPlayer has the possibility to display any movie in 16 colors, thus usable in the following sets:
The bpp (bits per pixel) value must be set to 4 by hand:
-bpp 4
The movie probably must be scaled down to fit in EGA mode:
-vop scale=640:350 or
-vop scale=320:200
For that we need fast but bad quality scaling routine:
-sws 4
Maybe automatic aspect correction has to be shut off:
-noaspect
Whether to build the FBdev target is autodetected during ./configure . Read the framebuffer documentation in the kernel sources (Documentation/fb/*) for more information.
If your card doesn't support VBE 2.0 standard (older ISA/PCI cards, such as S3 Trio64), only VBE 1.2 (or older?): Well, VESAfb is still available, but you'll have to load SciTech Display Doctor (formerly UniVBE) before booting Linux. Use a DOS boot disk or whatever. And don't forget to register your UniVBE ;))
The FBdev output takes some additional parameters above the others:
-fb-fbmode-fbmodeconfig-monitor_hfreq-monitor_vfreq-monitor_dotclockexample.confIf you want to change to a specific mode, then use
mplayer -vm -fbmode (NameOfMode) filename
echo -e
'\033[?25l' or setterm -cursor offsetterm -blank 0echo -e '\033[?25h'
or setterm -cursor onNOTE: FBdev video mode changing _does not work_ with the VESA framebuffer, and don't ask for it, since it's not an MPlayer limitation.
This section is about the Matrox G200/G400/G450/G550 BES (Back-End Scaler) support, the mga_vid kernel driver. It's active developed by me (A'rpi), and it has hardware VSYNC support with triple buffering. It works on both framebuffer console and under X.
WARNING: on non-Linux systems, use VIDIX for mga_vid!
Installation:
cd drivers
make
/dev/mga_vid device:
mknod /dev/mga_vid c 178 0
and load the driver with
insmod mga_vid.o
dmesg
command. If it's bad, use the mga_ram_size option
(rmmod mga_vid first), specify card's memory size in MB:
insmod mga_vid.o mga_ram_size=16
/etc/modules.conf:
alias char-major-178 mga_vid
Then copy the mga_vid.o module to the appropriate place
under /lib/modules/<kernel version>/somewhere.
Then run
depmod -a
configure will
detect /dev/mga_vid and build the 'mga' driver. Using it from
MPlayer goes by -vo mga if you have matroxfb console,
or -vo xmga under XFree86 3.x.x or 4.x.x.The mga_vid driver cooperates with Xv.
The /dev/mga_vid device file can be read (for example by
cat /dev/mga_vid) for some info, and written for brightness
change: echo "brightness=120" > /dev/mga_vid
This driver uses the kernel's tdfx framebuffer driver to play movies with
YUV acceleration. You'll need a kernel with tdfxfb support, and recompile
with ./configure --enable-tdfxfb
MPlayer supports displaying movies using OpenGL, but if your platform/driver supports xv as should be the case on a PC with Linux, use xv instead, OpenGL performance is considerably worse. If you have an X11 implementation without xv support, OpenGL is a viable alternative.
Unfortunately not all drivers support this feature. The Utah-GLX drivers (for XFree86 3.3.6) support it for all cards. See http://utah-glx.sourceforge.net for details about how to install it.
XFree86(DRI) 4.0.3 or later supports OpenGL with Matrox and Radeon cards, 4.2.0 or later supports Rage128. See http://dri.sourceforge.net for download and installation instructions.
AAlib is a library for displaying graphics in text mode, using powerful ASCII renderer. There are LOTS of programs already supporting it, like Doom, Quake, etc. MPlayer contains a very usable driver for it. If ./configure detects aalib installed, the aalib libvo driver will be built.
You can use some keys in the AA Window to change rendering options: | |||
1 | decrease contrast | ||
2 | increase contrast | ||
3 | decrease brightness | ||
4 | increase brightness | ||
5 | switch fast rendering on/off | ||
6 | set dithering mode (none, error distribution, Floyd Steinberg) | ||
7 | invert image | ||
a | toggles between aa and MPlayer control) | ||
The following command line options can be used:
-aaosdcolor=V-aasubcolor=Vwhere V can be: (0/normal, 1/dark, 2/bold, 3/bold font, 4/reverse, 5/special)
AAlib itself provides a large sum of options. Here are some important:
-aadriver-aaextended-aaeight-aahelpNOTE: the rendering is very CPU intensive, especially when using AA-on-X (using aalib on X), and it's least CPU intensive on standard, non-framebuffer console. Use SVGATextMode to set up a big textmode, then enjoy! (secondary head Hercules cards rock :)) (anyone can enhance fbdev to do conversion/dithering to hgafb? Would be neat :)
Use the -framedrop option if your computer isn't fast enough to
render all frames!
Playing on terminal you'll get better speed and quality using the Linux
driver, not curses (-aadriver linux). But therefore you need write access on
/dev/vcsa<terminal>. That isn't autodetected by aalib, but vo_aa tries
to find the best mode. See
http://aa-project.sourceforge.net/tune/
for further tuning issues.
This driver was designed and introduced as a generic driver for any
video card which has VESA VBE 2.0+ compatible BIOS. Another advantage of this
driver is that it tries to force TV output on.
VESA BIOS EXTENSION (VBE) Version 3.0 Date: September 16, 1998 (Page
70) says:
Dual-Controller Designs
VBE 3.0 supports the dual-controller design by assuming that since both controllers are typically provided by the same OEM, under control of a single BIOS ROM on the same graphics card, it is possible to hide the fact that two controllers are indeed present from the application. This has the limitation of preventing simultaneous use of the independent controllers, but allows applications released before VBE 3.0 to operate normally. The VBE Function 00h (Return Controller Information) returns the combined information of both controllers, including the combined list of available modes. When the application selects a mode, the appropriate controller is activated. Each of the remaining VBE functions then operates on the active controller.
So you have chances to get working TV-out by using this driver.
(I guess that TV-out frequently is standalone head or standalone output
at least.)
monitor_hfreq,
monitor_vfreq, monitor_dotclock somewhere (config
file, or commandline) you will get the highest possible refresh rate. (Using
General Timing Formula). To enable this feature you have to specify
all your monitor options.Don't use this driver with GCC 2.96! It won't work!
Command line options available for VESA:
-vo vesa:opts-double option. Note: you may omit these parameters to enable
autodetection of dga mode.Avoid if possible. Outputs to X11 (uses shared memory extension), with no
hardware acceleration at all. Supports (MMX/3DNow/SSE accelerated, but still
slow) software scaling, use the options -fs -zoom. Most cards
have hardware scaling support, use the -vo xv output for them,
or -vo xmga for Matroxes.
The problem is that most cards' driver doesn't support hardware acceleration on the second head/TV. In those cases, you see green/blue colored window instead of the movie. This is where this driver comes in handy, but you need powerful CPU to use software scaling. Don't use the SDL driver's software output+scaler, it has worse image quality!
Software scaling is very slow, you better try changing video modes instead. It's very simple. See the DGA section's modelines, and insert them into your XF86Config.
-vm option. It will
change to a resolution your movie fits in. If it doesn't:If you can't find the modes you inserted, browse XFree86's output. Some drivers can't use low pixelclocks that are needed for low resolution video modes.
VIDIX is the abbreviation for VIDeo Interface for
*niX.
VIDIX was designed and introduced as an interface for fast user-space drivers
providing such video performance as mga_vid does for Matrox cards. It's
also very portable.
This interface was designed as an attempt to fit existing video acceleration interfaces (known as mga_vid, rage128_vid, radeon_vid, pm3_vid) into a fixed scheme. It provides highlevel interface to chips which are known as BES (BackEnd scalers) or OV (Video Overlays). It doesn't provide lowlevel interface to things which are known as graphics servers. (I don't want to compete with X11 team in graphics mode switching). I.e. main goal of this interface is to maximize the speed of video playback.
-vo xvidix-vo vesa:vidix (Linux only) and -vo fbdev:vidix:vidix subdevice.
When VIDIX is used as subdevice (-vo vesa:vidix) then
video mode configuration is performed by video output device
(vo_server in short). Therefore you can pass into command line of
MPlayer the same keys as for vo_server. In addition it understands
-double key as globally visible parameter. (I recommend using
this key with VIDIX at least for ATI's card).
As for -vo xvidix: currently it recognizes the following
options: -fs -zoom -x -y -double.
Also you can specify VIDIX's driver directly as third subargument in command
line:
mplayer -vo xvidix:mga_vid.so -fs -zoom -double
file.avi
or
mplayer -vo vesa:vidix:radeon_vid.so -fs -zoom -double -bpp
32 file.avi
But it's dangerous, and you shouldn't do that. In this case given driver will
be forced and result is unpredictable (it may freeze your
computer). You should do that ONLY if you are absolutely sure it will work,
and MPlayer doesn't do it automatically. Please tell about it to the
developers. The Right Way is to use VIDIX without arguments to enable driver
autodetection.
VIDIX is very new technology and it's extremely possible that on your system (OS=abc CPU=xyz) it won't work. In this case only solution for you it's port it (mainly libdha). But there is hope that it will work on those systems where X11 does.
Warning: security risk
Unfortunately you must have root privileges to use VIDIX due to direct hardware access. At least the SUID bit on the MPlayer executable must be set.
This is a video equalizer implemented especially for VIDIX. You can use it either with 1-8 keys as described in the man page, or by command line arguments. MPlayer recognizes the following options:
-brightness-contrast-saturation-hue-red_intensity-green_intensity-blue_intensityEach parameter can accept values from -1000 to +1000.
Default value for each parameter is 0.
Note: Not every driver provides support for each of those parameters. Currently only radeon_vid.so provides full support for video equalizing. Other drivers only partly support these options.
Examples:
mplayer -vo vesa:vidix -brightness -300 -contrast 200
filename.avi
or
mplayer -vo xvidix -red_intensity -50 -saturation 400 -hue 300
filename.vob
This is a display-driver (-vo zr) for a number of MJPEG
capture/playback cards (tested for DC10+ and Buz, and it should work for the
LML33 and the original DC10). The driver works by encoding the frame to jpeg
and then sending it to the card. For the jpeg encoding libavcodec is
used, and required. With the special cinerama mode, you can watch
movies in true wide screen provided that you have two beamers and two
MJPEG cards. Depending on resolution and quality settings, this driver
may require a lot of CPU power, remember to specify -framedrop
if your machine is too slow. Note: My AMD K6-2 350MHz is (with
-framedrop) quite adequate for watching VCD sized material and
downscaled movies.
This driver talks to the kernel driver available at http://mjpeg.sourceforge.net, so you must get it working first. The presence of an MJPEG card is autodetected by the configure script, if autodetection fails, force detection with
./configure --enable-zr
The output can be controlled by several options, a long description of the options can be found in the man page, a short list of options can be viewed by running
mplayer -zrhelp
Things like scaling and the OSD (on screen display) are not handled by
this driver but can be done using the video filters. For example,
suppose that you have a movie with a resolution of 512x272 and
you want to view it fullscreen on your DC10+. There are three main
possibilities, you may scale the movie to a width of 768,
384 or 192. For performance and quality reasons,
I would choose to scale the movie to 384x204 using the fast
bilinear software scaler. The commandline is
mplayer -vo zr -sws 0 -vop scale=384:204 movie.avi
Cropping can be done by the crop filter and by
this driver itself. Suppose that a movie is too wide for display on your
Buz and that you want to use -zrcrop to make the movie less
wide, the you would issue the following command
mplayer -vo zr -zrcrop 720x320+80+0 benhur.aviif you want to use the
crop filter, you would do
mplayer -vo zr -vop crop=720:320:80:0 benhur.avi
Extra occurances of -zrcrop invoke cinerama mode, i.e.
you can distribute the movie over several TV's or beamers to create a larger
screen. Suppose you have two beamers. The left one is connected to your Buz
at /dev/video1 and the right one is connected to your DC10+ at
/dev/video0. The movie has a resolution of 704x288.
Suppose also that you want the right beamer in black and white and that
the right beamer should have jpeg frames at quality 10,
then you would issue the following command
mplayer -vo zr -zrdev /dev/video0 -zrcrop 352x288+352+0 -zrxdoff 0 -zrbw \
-zrcrop 352x288+0+0 -zrdev /dev/video1 -zrquality 10 movie.avi
You see that the options appearing before the second -zrcrop
only apply to the DC10+ and that the options after the second
-zrcrop apply to the Buz. The maximum number of MJPEG cards
participating in cinerama is four, so you can buid a 2x2
vidiwall.
Finally an important remark: Do not start or stop XawTV on the playback device during playback, it will crash your computer. It is, however, fine to FIRST start XawTV, THEN start MPlayer, wait for MPlayer to finish and THEN stop XawTV.
MPlayer supports cards with the Siemens DVB chipset from vendors like Siemens, Technotrend, Galaxis or Hauppauge. The latest DVB drivers are available from the Linux TV site. If you want to do software transcoding you should have at least a 1GHz CPU.
Configure should detect your DVB card. If it did not, force detection with
./configure --enable-dvb
If you have ost headers at a non-standard path, set the path with
./configure --with-extraincdir=<DVB source directory>/ost/include
Then compile and install as usual.
Hardware decoding (playing standard MPEG1/2 files) can be done with this command:
mplayer -ao mpegpes -vo mpegpes file.mpg|vob
Software decoding or transcoding different formats to MPEG1 can be achieved using a command like this:
mplayer -ao mpegpes -vo mpegpes -vop lavc yourfile.ext mplayer -ao mpegpes -vo mpegpes -vop fame,expand yourfile.ext
Note that DVB cards only support heights 288 and 576 for PAL or 240 and 480
for NTSC. You must rescale for other heights by adding
scale=width:height with the width and height you want to the
-vop option. DVB cards accept various widths, like 720, 704,
640, 512, 480, 352 etc and do hardware scaling in horizontal direction, so
you do not need to scale horizontally in most cases. For a 512x384 (aspect
4:3) DivX try:
mplayer -ao mpegpes -vo mpegpes -vop lavc,scale=512:576
If you have a widescreen movie and you do not want to scale it to full height,
you can use the expand=w:h plugin to add black bands. To view a
640x384 DivX, try:
mplayer -ao mpegpes -vo mpegpes -vop lavc,expand=640:576 file.avi
If your CPU is too slow for a full size 720x576 DivX, try downscaling:
mplayer -ao mpegpes -vo mpegpes -vop lavc,scale=352:576 file.avi
If speed does not improve, try vertical downscaling, too:
mplayer -ao mpegpes -vo mpegpes -vop lavc,scale=352:288 file.avi
For OSD and subtitles use the expand feature of the OSD plugin. So, instead
of expand=w:h or expand=w:h:x:y, use
expand=w:h:x:y:1 (the 5th parameter :1 at the end
will enable OSD rendering). You may want to move the image up a bit to get a
bigger black zone for subtitles. You may also want to move subtitles up, if
they are outside your TV screen, use the -subpos <0-100> switch
to adjust this (-subpos 80 is a good choice).
In order to play non-25fps movies on a PAL TV or with a slow CPU, add the
-framedrop option.
To keep the aspect ratio of DivX files and get the optimal scaling parameters (hardware horizontal scaling and software vertical scaling while keeping the right aspect ratio), use the new dvbscale plugin:
for 3:4 TV: -vop lavc,expand=-1:576:-1:-1:1,scale=-1:0,dvbscale for 16:9 TV: -vop lavc,expand=-1:576:-1:-1:1,scale=-1:0,dvbscale=1024
If you have questions or want to hear feature announcements and take part in discussions on this subject, join our MPlayer-DVB mailing list. Please remember that the list language is English.
In the future you may expect the ability to display OSD and subtitles using the native OSD feature of DVB cards, as well as more fluent playback of non-25fps movies and realtime transcoding between MPEG2 and MPEG4 (partial decompression).
MPlayer supports hardware accelerated playback with the Creative DXR3 and Sigma Designs Hollywood Plus cards. These cards both use the em8300 MPEG decoder chip from Sigma Designs.
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 DXR3 & Hollywood Plus for Linux site. Configure should detect your card automatically, compilation should go without problems.
-vo dxr3:prebuf:sync:<device>prebuf turns on 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
MPlayer will try to keep the video buffer filled with data at all
times. If you are on a slow machine MPlayer 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 MPlayer will not have to
reencode it to MPEG it will fill the buffer very fast.-framedrop option to avoid further loss of sync.sync will turn on the new sync-engine. This is currently an
experimental feature. With the sync feature turned on the em8300's internal
clock will be monitored at all times, if it starts to deviate from MPlayer's
clock it will be reset causing the em8300 to drop any frames that are lagging
behind.<device> = device number to use if you have more than one
em8300 card.
:prebuf:sync seems to work great when playing DivX etc, even on
AMD's CPUs. But people have reported problems using these options when playing
normal MPEGs. You might want to try running without any options first, if you
have sync problems give :sync a try.-ao oss:/dev/em8300_ma-XX is the device number
(0 if one card).-aop list=resample:fout=xxxxx-ac hwac3).-vop lavc/fame-vop lavc/fame.-vop lavc=<quality>:25,
especially if you are using prebuffering. Then why 25 and not 29.97? Well,
the thing is that when you use 29.97 the picture becomes a bit jumpy. The
reason for this is unknown to us. If you set it to somewhere between 25 and
27 the picture becomes stable. For now all we can do is accept this for a
fact.-ac hwac3-ao oss option
above, it must be used to specify the DXR3's output instead of
a soundcard. Also read hardware AC3
section for further information on AC3.To get overlay run dxr3view that comes with the em8300 package before
starting MPlayer. You can set various options in dxr3view by pressing
T while holding the mouse cursor above the window. Activating
rectangle mode seems to work for alot of people.
In some instances, subtitles may not appear properly in sync with the A/V
stream when using hardware decoding. 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 -vop lavc
when viewing DVDs with subtitles. When running with -vop lavc
MPlayer 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.
Under Linux you have 2 methods to get G400 TV out working:
IMPORTANT: for Matrox G450/G550 TV-out instructions, please see the next section!
-vo x11 -fs -zoom
options, but it will be SLOW, and has Macrovision copy protection
enabled (you can "workaround" Macrovision using
this perl
script.TVout/matroxset and type make. Install
matroxset into somewhere in your PATH.fbset installed, enter
TVout/fbset and type make. Install
fbset into somewhere in your PATH.TVout/ directory in the MPlayer
source, and execute ./modules as root. Your text-mode console
will enter into framebuffer mode (no way back!)../matroxtv script. This will present you
to a very simple menu. Press 2 and ENTER. Now you should
have the same picture on your monitor, and TV. If
the TV (PAL by default) picture has some weird stripes on it, the script wasn't able to
set the resolution correctly (to 640x512 by default). Try other
resolutions from the menu and/or experiment with fbset.Yoh. Next task is to make the cursor on tty1 (or whatever) to disappear, and turn off screen blanking. Execute the following commands:
echo -e '\033[?25l' or setterm -cursor off
setterm -blank 0
You possibly want to put the above into a script, and also clear
the screen.. To turn the cursor back:echo -e '\033[?25h'
or setterm -cursor on
Yeah kewl. Start movie playing with mplayer -vo mga -fs -screenw 640
-screenh 512 <filename>
(if you use X, now change to matroxfb with for example CTRL-ALT-F1!)
Change 640x512 if you set the resolution to other.
Enjoy the ultra-fast ultra-featured Matrox TV output (better than Xv)!
TV output support for these cards has only been recently introduced, and is not yet in the mainstream kernel. Currently the mga_vid module can't be used AFAIK, because the G450/G550 driver works only in one configuration: the first CRTC chip (with much more features) on the first display (on monitor), and the second CRTC (no BES - for explanation on BES, please see the G400 section above) on TV. So you can only use MPlayer's fbdev output driver at the present.
The first CRTC can't be routed to the second head currently. The author of the kernel matroxfb driver - Petr Vandrovec - will maybe make support for this, by displaying the first CRTC's output onto both of the heads at once, as currently recommended for G400, see the section above.
The necessary kernel patch and the detailed howto is downloadable from http://www3.sympatico.ca/dan.eriksen/matrox_tvout/
Currently ATI doesn't want to support any of its TV-out chips under Linux, because of their licensed Macrovision technology.
On other cards, just use the VESA driver, without VIDIX. Powerful CPU is needed, though.
Only thing you need to do - have TV connector plugged in before booting your PC since video BIOS initializes itself only once during POST procedure.
Check this URL.