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Old July 4th 09, 01:09 AM posted to microsoft.public.windowsxp.video
JohnRolandElliott
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Default WMP 11 won't play .mp4 video file.


What do you need? It depends.

For times like these, in addition to GSpot, you might find MediaInfo
(http://mediainfo.sourceforge.net/en) useful.

Like a file with an extension of AVI, a file with an extension of MP4
typically contains two or more data streams - a video and an audio.
Additionally, some containers have provisions for multiple audio streams
and text streams, such as foreign language dubbing and subtitles. MKV is
another common container, as is DVR-MS.

The video stream can be encoded any of several ways - DivX, XviD and
AVC are common. Likewise, the audio might be AAC or MP3 or something
else entirely.

So what you need in order to play an arbitrary MP4 or AVI depends on
how the audio and video streams are encoded in addition to what kind of
container they're packaged in. GSpot or MediaInfo can help you determine
that. MediaInfo has buttons that purport to take you to download sites
for the various compression schemes that it recognizes.

All that said, before all is said and done, you might need to install
ffdshow, QuickTime (shudder), RealPlayer and some Matroska stuff before
you're prepared to handle everything you might find.

Start with ffdshow http://sourceforge.net/projects/ffdshow/ and see if
that gets you past your immediate


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JohnRolandElliott
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