Mailinglist Archive: opensuse (3566 mails)

["Steven T. Hatton" <hattons@xxxxxxxxxxxxxxxxxx>]

On Saturday 21 April 2007 09:44, Stevens wrote:
> After looking at that video, I can't for the life of me understand why it
> is so important, even if it is for the most ardent conspiracy theorist.

Ask Andreas Strassmeir what he thinks about Emad A. Salem's videotapes.

> Having said that, here is your answer direct from the FAQ page for mplayer:
>
> "how do i extract frames from videos? how do i make thumbnails from videos?
> how do i make a gallery of images from a movie?
>
>     * mplayer -vo jpeg -sstep 30 -frames 10 yourfile

I should have asked on this mailing list two days ago.  It would have saved me 
a lot of agony.  Unfortunately the various update daemons in openSUSE 10.2 in 
conjuction with spamassassin tend to lock my system up (I mean 'no response 
for half an hour' kind of locked up.) So I avoid using email.

Mplayer is strangely missing from the openSUSE 10.2 (i586) distribution.  I 
didn't look after adding pm to my installation sources. I have now fetched 
it. Thanks for the reminder. 

This snagged 10 frames very nicely:

mplayer -vo jpeg -vf framestep=30 -frames 10 \
-vf scale=640:480 911.wtc.2.north.very.close.slow.wmv 

Using -sstep only got one.  Now I suppose you will expect me to do something 
like read the documentation, eh? ;)

I had attempted to build my own transcode, but I couldn't untangle the usage, 
and it didn't build with some of the support which seemed essential, such as 
avifile, which puked when I tried to build it.

>     * add -vf scale=320:240 if you want smaller image size...
>     * use -vf framestep if sstep does not work on your source.
>            also check out this howto for using ffmpeg or mencoder to create
> movies http://electron.mit.edu/~gsteele/ffmpeg/ ";

I tried using ffmpeg, which seemed very close to the correct tool, but 
couldn't figure out how to get it to create the stills.

BTW, do you know of a way to slow down a video?

Also, does anybody know exactly what causes the video window to be blanked 
when I try to xwd it?  There is something extremely offensive about that 
feature.

-- 
Steven
"Whoever controls the histories of nations controls those nations and their 
peoples." Germar Rudolf
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