DivXG400 2.2

Background
Installation
Usage
Picture adjustment
Subtitles
License

Background

At the moment there is a small incompatibility between DivX ;-), MS MPEG4, WM7, WM8 codecs and Matrox G400/G450 drivers/hardware. If movie's width is not exact multiple of 32 (like 720x???), clip will be played back without using video overlay. If video overlay is not used, clips are looking choppy and DVDMax can not be used.

DivXG400 provides workaround for the problem. It acts as an additional DirectShow filter between codec and Video Renderer, adding black pixels to meet 32pix boundary.

In addition to "32Pix problem" fix, DivXG400 provides following features:

Image adjustment (Pan & Scan, aspect ratio correction, overscan compensation)
High quality subtitle display in windowed and full-screen mode (supports almost every known subtitle format: SubViewer 1.0, 2.0, SubRip, MicroDVD, SAMI, Sub Station Alpha 3.0, 4.0, JACOsub, DVDSubtitle, VobSub 3.0, 4.0, TMPlayer, SMIL-RealText, AqTitle)
Subtitle output to TV in DVDMax mode (of course, all "classical" modes are supported, too)

DivXG400 is codec-independent and should work within all players, that use automatic DirectShow Filter Graph generation (Windows Media Player, MicroDVD Player, Zoom Player etc.). Also, video codec must support YUY2 output format.

I've been informed, that DivXG400 has good influence over playing clips with several GeForce cards as well. So You may find DivXG400 useful even if You don't have Matrox G400. I think at least subtitle functionality is worth to try :-)

Installation

Run setup.exe and follow instructions on the screen.

Uninstallation

Choose Start/Settings/Control Panel/Add-Remove Programs/DivXG400/Remove.

Usage

Just play the clip :-)

To adjust picture, choose DivXG400 options from Your player (in case of Media Player 6.4: File/Properties/Advanced/DivXG400) or if Your player does not support filter adjustment, run Start/Programs/PRR Video Utilities/Configure DivXG400.
Use image adjustment options only with Preserve Aspect Ratio setting of DVDMax!

Overscan compensation adds black borders to clip sides, so You will see whole image on Your TV-screen. Typical setting for 4:3 TV should be ca 8%.
If You are watching wide-screen movie on 4:3 TV or 4:3 clip on 16:9 TV, You may want to zoom image to fill more of Your TV-screen. Cut sides to ... setting makes sure, that at least specified amount of screen is filled with image.
If Use leftover space for subtitles is checked, DivXG400 uses "leftover" space below or above movie to display subtitles.
If DivXG400 causes flipped image, You may force DivXG400 to reflip it by choosing Force vertical flip. Flip input mirrors image only, Flip output mirrors image with subtitles, Filp input and output mirrors subtitles leaving image intact.
There should never be a need to use it, please report a bug, if You have to.
If Extended overlay support is on, number of additional features can be used:
- Image on TV does not freeze if player is covered or minimized.
- MPEG2 and other clips with aspect ratio correction can be correctly viewed in both full screen and windowed mode.
- Aspect ratio of the clip can be manually adjusted (see below).
Extended overlay support must be enabled to use DivXG400 with codecs that require support for aspect ration correction. Most of DVD video decoders do, possibly more.

In Extended overlay mode, DivXG400 can be used only for one clip at a time. Every time second clip is started, WMP tries to download additional codec/filter that would allow double-use of DivXG400, but fails of course :-)

Aspect ratio compensation requires Extended overlay mode.

PAL/NTSC clip informs DivXG400, that the clip has been encoded without compensating out-of-aspect source (typically MPEG). Abstract square is meant to be used for custom image stretching.
Use aspect ratio contains information, how image should look.

For example:

Assume You have MPEG4 copy of non-anamorphic NTSC DVD. Its resolution is 720x480. If played back in DVD player, it covers full TV screen, but MPEG4 version of the clip leaves black borders in bottom and top of the screen. To get correct result, choose NTSC clip and 4:3 aspect ratio in DivXG400 settings.
If clip contains anamorphic image, choose corresponding aspect ratio (typically 16:9).
If You want image to be stretched to double height, choose Abstract square and 1:2 aspect ratio.

Advanced section contains some global and/or more complex settings of DivXG400.

DivXG400 Home Directory is currently used for subtitle-autoload, in future possibly for smth. more.
You may specify in which occasions DivXG400 is loaded from Load filter dropdown. Only if necessary mode could be useful for slower PC users who use DivXG400 only for 32pix problem fix. In that mode DivXG400 is not loaded if clip is 32-divisible, image adjustment isn't used and no subtitles are found.
If near to 24fps clips are played back on PAL TV, image looks bit choppy, freezing every second for a short moment. If Play near to 24fps clips at 25fps option is selected, there is no such choppyness on TV any more. Option affects only clips with frame rate from 23.500 to 24.500.
NB! The feature requires cooperation of whole DirectShow graph and therefore may not work on every system/with every player/with every clip.

After adjusting DivXG400 You may have to restart player.

To use subtitles, name subtitle file Subtitles or by name of the clip. Copy it to DivXG400 home directory (typically C:\DivXG400) or to the same directory with the clip (directories depend on DivXG400 settings). Then (re)start player. Subtitles are loaded automatically.
Note. You can also load subtitles from DivXG400 options, but it is not recommended, because it can not exploit Use leftover space for subtitles feature.
Subtitle file extension should be:

SRT for SubRip files.
SUB for SubViewer 1.0, 2.0 and DVDSubtitle files.
SUB + IFO + IDX (three files) for VobSub 3.0 and 4.0 files.
TXT for MicroDVD and TMPlayer files.
SMI for SAMI files.
SSA for Sub Station Alpha 3.0 and 4.0 files.
JS for JACOsub files.
RT for RealText files.
AQT for AqTitle files.

If file extension and its format do not match, format of most common files is autodetected. To avoid problems caused by incorrectly detected format, it is recommended to use extensions listed above.

For example, You have clip C:\Clips\Matrix.avi and MicroDVD subtitles for it. Name subtitle file Matrix.txt or Subtitles.txt and copy it to C:\Clips or to DivXG400 home directory. Start player and enjoy.

DivXG400 uses not all the information present in subtitle files.
Following is a detailed listing of supported features.

Subtitle format	Timing	Text	Images	Multilanguage	Special
SubViewer 1.0, 2.0	Complete	Yes	N/A	N/A
SubRip	Complete	Yes	N/A	N/A
MicroDVD	Requires constant frame-rate clip	Yes	N/A	N/A	Frame rate specification (see below)
SAMI	Complete	Yes	No	Yes
Sub Station Alpha 3.0, 4.0	Complete	Yes	Bitmaps	N/A
JACOsub	Basic	Yes	No	N/A
DVDSubtitle	Complete	Yes	Bitmaps	N/A
VobSub 3.0, 4.0	Complete	N/A	Yes	Yes	Loading of the subtitle file may take up to minute on slower computers
TMPlayer	Complete	Yes	N/A	N/A
RealText	Complete	Yes	N/A	N/A
AqTitle	Requires constant frame-rate clip	Yes	N/A	N/A	Frame rate specification (see below)

Font face, color, size and style specified in file are ignored.
Subtitle position specified in file is ignored.
Images and text are outputted only in grayscale.
Compressed file formats are not accepted.

If You use MicroDVD or AqTitle file with DivXG400, You may want to slightly modify file by adding frame rate information.
In case of MicroDVD file, add line {1}{1}??? to the beginning of the file, replacing ??? with the frame rate of subtitle file. For example: {1}{1}23.976.
Note. Because of backward compatibility, line {0}{0}??? is also accepted..
In case of AqTitle file, add six rows between Cut-lines to the beginning of the file:
----- Cut Here -----
-->> 00000000
???

-->> 00000001

----- End Cut -----
Like in case of MicroDVD file, replace ??? with the frame rate of the file.

If frame rate information is missing, frame rate is autodetected.

You can modify subtitle position, lookout etc. from DivXG400 options.

Note. Default subtitle settings are optimized for DVDMax TV-out and may be not the best choice for watching subtitles on monitor. Feel free to readjust them :-)

License

This program is provided in a basis of "as is". Use it at Your own risk. Author does not take any responsibility of possible direct or indirect damage caused by the program.

DivXG400 is shareware. It's free for non-commercial use, but if You find the program useful, please donate author with small amount of money. You may redistribute DivXG400 freely as long You do not change integrity of the package.

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