pastyman55 said:
why do they play upside down?
When a player prepares to play video, it constructs a graph, which
includes several so-called "filters". These are components that perform
various functions, such as decoding audio, decoding video,
post-processing, etc. The combination of filters used depends on the
attributes of the clip to be played, as well as how the application
wants to do things. Some filters are supplied by Microsoft (e.g.
Directshow filters), others come from various third party producers,
such DivX, FFDSHOW, Cyberlink (PowerDVD), etc.
There is one (at least) filter that is used to invert the video. If
this filter is inserted into any graph, the playback will come out
upside down. So now the questions:
- Which player are you using?
- What type of clips are you playing? Does the problem occur with more
than one type?
- Which decoder are you using?
- In the player you are using, is there a "flip" or "invert" option
that you had inadvertantly set? To verify this, try a different player.
If all else fails, you can download and install FFDSHOW, which has such
an invert option. Then you can configure it to handle the problematic
clips with the "invert" option set.