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@@ -673,6 +673,240 @@ implement it, and send a patch. Don't ask for it.
want to go to jail.
| |
+
+ | Q: |
+What card you may suggest me to buy? |
+
| A0: |
+It's for your opinion only but our issues are:
+ |
| A1: |
+Speed:
+
This
+parameter can be computed very easy:
+
a)
+which movies do you plan to watch:
+
-
+MPEG1: 320x200@32=256000
+
so
+you need only 256*25fps=6.4Mb/sec bandwidth (This format can be played
+in real-time on any PC since P-100 + S3Virge)
+
-
+MPEG4: 640x480@32=1228800
+
you
+need videobandwidth 1.2*25fps=30Mb/sec To watch such movie in real-time
+you need enough power PC: (Celeron-450+DIMM based video card)
+
-
+MPEG2 (aka DVD or SDTV): 1024x768@32=3145728
+
you
+need videobandwidth 3*30fps=90Mb/sec In extremal cases (if your video card
+supports IDCT decoding) this can be played on the same PC as for MPEG4
+
-
+HDTV (HighData TeleVision): 2000x2000@32=16000000
+
i.e.
+videobandwidth = 16*30fps=480Mb/sec (This means also that you need at least
+32Mb of video memory to watch this stream: 16Mb for RGB area and 16Mb for
+YUV area)
+
b)
+Bandwidth of PCI slot is: 33Mhz*32bit=132Mb/sec And PCI2.1 has 66MHz*32bit=265Mb/sec
+that is far enough for any movie playback (except HDTV streams which really
+require AGP bus).
+
c)
+What memory type should be installed on video card:
+
SIMM
+- avoid that
+
DIMM
+- good if your video card has 128-bit memory access.
+
DDR
+- is far enough for all types.
+
Note:
+By DGA comparision - there is no any visible difference between video cards
+which have installed the same type of video memory.
+
Resume:
+If you have enough power CPU (Celeron-450 or K6-2-500) it would be enough
+to buy any video card which has at least 8Mb of DIMM or DDR memory.
+ |
| A2: |
+Quality:
+
This
+question was investigated in depth at:
+
http://www.anadtech.com
+AnandTech - Video Card Roundup - DVD Quality, Features & Performance
+(October 2000)
+ |
| A3: |
+WORKING features under Linux:
+
If
+you are win32 user then probably you have support (from driver and DirectX8
+side) for any feature which was introduced in your chip.
+
But
+for linux users:
+
Currently
+I know only several vendors which have more or less advanced support under
+Linux:
+
+
+
+| |
+
+
+Matrox
+ |
+
+
+ATI
+ |
+
+
+NVidia
+ |
+
+
+S4 Savage
+ |
+
+
+
+| Driver's provider |
+
+enthusiasts |
+
+enthusiasts |
+
+OEM + enthusiasts |
+
+enthusiasts |
+
+
+
+| Driver's quality |
+
+Best(X11,kernel) |
+
+Best(X11,GATOS,kernel) |
+
+Buggy(X11 only) |
+
+Best(X11 only) |
+
+
+
+| VIDEO OVERLAY |
+
+ |
+
+ |
+
+ |
+
+ |
+
+
+
+| BES and YV2RGB |
+
+YES |
+
+YES |
+
+YES |
+
+YES |
+
+
+
+| scaling filters |
+
+N/A |
+
+YES |
+
+N/A |
+
+N/A |
+
+
+
+| adaptive deinterlace |
+
+NO |
+
+YES |
+
+N/A |
+
+N/A |
+
+
+
+| Video equalizer (hue, contrast, saturation, color correction) |
+
+N/A |
+
+PARTLY (under devel) |
+
+N/A |
+
+N/A |
+
+
+
+| Alpha blending, color and video keys |
+
+PARTLY |
+
+PARTLY (under devel) |
+
+N/A |
+
+N/A |
+
+
+
+| Video capture |
+
+N/A |
+
+YES(GATOS) |
+
+N/A |
+
+N/A |
+
+
+
+| TV-out |
+
+YES |
+
+YES |
+
+N/A |
+
+N/A |
+
+
+
+Well
+- it's very rude observing of video card. Indeed we should pay our attention
+for models of video card:
+
For
+example if MatroxG400(G450) drivers support TV-out then G550 has no such
+support.
+
Other
+sample: Adaptive deinterlacing exists only since Rage128 chip and isn't
+present on Mach64+ ones. Same as 3D features are far different from Mach64
+to Radeon2 8500 with trueform possibilities.
+ ANYWAY
+- MPLAYER'S TEAM DOESN'T ACCEPT ANY CLAIMS IF YOU AFTER
+
READING
+OF THIS MATERIAL WILL BUY CARD WHICH IS UNSUCCESSFUL FOR YOU!!!
+
THIS
+MATERIAL IS ONLY OUR VISION.
+ Q:
+If PCI slot is far enough for most types of movies then why S3 Virge
+
is
+too slow for them?
+
A:
+Due to its SIMM memory.
+ |
| |
+
|
5.6. Encoding
|
| |