Why does my video play upside-down
or get inverted when I burn it to disc?
What are FFDShow, bicubic resizer,
G400 and direct show filters and why
are dap and JS against them?
 

No, the answer to turning your video right side up is not "turn your monitor upside down," although that works too...The culprit is more than likely a DirectShow filter. If you are running a Windows operating system, most media players will be using decoding technology called DirectShow to play your files. Special filters can be installed for this technology, they can add special effects, or even more desirable for some (definitely not for us) - they can play different video formats without having to use specific codecs for specific video files. Kind of like an all-in-one code breaker. We always say that whatever tries to do everything doesn't do anything well, and as is probably becoming obvious to you by now, we are not supporters of direct show filters, especially the ones listed below. Inverting a movie is one of the undesirable results that you can get with these filters, and there have been times when direct show filters have been responsible for crashing systems.

This is why we DO NOT not recommend installing any of the following filters below. You should be careful when installing any codec packs, as most of them contain one or all of these filters, and even worse, very old versions of them. Always do a custom installation of any codec pack. Here is a brief description and name of the ones you should watch out for:

FFDShow
Filename: FFDShow.ax
FFDShow is an MPEG4 video decoder filter that supports playback of many different formats, mainly DivX and XviD. Older versions of the FFDShow decoder filter are often included in codec packs (such as Nimo, SLD, Ace or K-Lite). Some users swear by FFDShow, as it can assist in solving some playback problems, but we feel it can create way more problems than it solves. It does not fully support decoding of all DivX 5 video, and it substitutes itself for DivX by default. If you decide to go ahead and install FFDShow, you should either disable DivX 5 support during installation or via the FFDShow configuration tool on your Start menu. If you don't, DivX 5 video may play badly, not at all, or appear to be corrupt. XviD can have a greeen screen or play badly as well. Another thing to remember if you are going to use FFDShow, make sure you install the latest version from www.sourceforget.net, and not one from a codec pack.

resize filter Bicubic
Filename: bicubic_resizer.ax
As FFDShow, Bicubic Resizer is Installed as part of many codec packs. It and FFDShow are probably the most responsible for inverted video.

G400 filter
Filename: divxg400.ax
Also installed as part of many codec packs, this filter can also invert the video. But we think that this is the least of the worries of G400. If you doubt us, just google the words "G400 crash systems."

XviD filter (not to be confused with the XviD codec)
Filename: xvid.ax
The XviD filter can also invert DivX video files and is found in almost all codec packs.

So what can I do if my video file is playing upside down or becomes inverted when I burn it?
You can either uninstall these filters using a program like DXman (available for download on our homepage) or you can manually unregister them.

To manually unregister the filters perform these steps:

Choose Run from the Start menu and enter:
command
then click "OK" In the command window that opens
enter:
cd \windows\system32
and then press enter.

For each file you wish to unregister enter:
regsvr32 /u <filename>
For example, to unregister the Bicubic Resize filter enter:
regsvr32 /u bicubic_resizer.ax