On Wed, 10 Aug 2005, Peter Dettori wrote:

> when i run configure on my SuSE9.2 system i get the following options 
> disabled.
> 
> configure:   - software MJPEG playback       : false

        The above means  you do not have the SDL installed.

> configure:   - MPEG Z/Alpha                  : false
        
        Ignore that one.  It was a specialized "hack" added for a specific
        purpose - I do not believe it is in general use.

> What do they mean?  I wanted to use glav to edit an mpg movie but it 
> complains with the following message

        There is a difference between MPG and MJPEG.  You do not edit MPEG
        (.mpg) files with mjpegtools.  

>  ++: Unable to identify file (not a supported format - avi).

        Quite correct.  If the file is not MJPEG (in either the AVI or
        Quicktime) then glav (and most of mjpegtools) can not open it.  IF
        the file is a Quicktime file then you will need libquicktime installed
        on the system.

> Is this related to the above options or can i not edit mpg movies using 
> glav?  If not how do i convert them to avi?

        Is the data from a video capture card?  Or is it from a 'rip'd DVD
        or a MPEG file that was downloaded from the Internet?  The first 
        (capture card data) can be edited and then encoded, the second 
        (already encode movies) can NOT be edited with mjpegtools.

        mjpegtools is used to _create_ MPEG files, not edit them ;)

        Cheers,
        Steven Schultz



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