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Old 03-24-2005, 08:32 PM   #1
DDD26
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Software for video capture from screen in redhat


I came from Sillicon Graphics family and it had several software packages to capture video from screen (simulations, for example) such as mediarecorder. I couldn't find any such software installed under RedHat. Could somebody recommend me one?

Thanks!
 
Old 03-24-2005, 08:38 PM   #2
visaris
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You could use xwd to dump the whole screen every few seconds and they make a video out of the frames... bit of a hack, I'm sure it's not quite what you want but you might use it as a last resort.
 
Old 03-24-2005, 08:45 PM   #3
visaris
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Code:
for((i=0; i<1000; i++)) do xwd -root -out $i.xwd; sleep 1; done
Works for me if you need to fall back on this.
 
Old 03-24-2005, 09:05 PM   #4
DDD26
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Thanks. This solution would not be very good for my goal, since the whole screen is 1600x1200 and I need to make a movie 320-240 to show during presentations. The movie itself is a couple of minutes long.
 
Old 03-24-2005, 11:06 PM   #5
Electro
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You have to use a few utilities. One use xwd. Next use display (Image Magic) to resize the files to 320x240. Use bash scripting to help you save time resizing all pictures and save them to a format that mplayer's mencoder will be compatible with. Third use mplayer's mencoder to put it in an avi file using a video codec like huffyuv or other lossless video codec.
 
Old 05-26-2005, 07:31 PM   #6
DDD26
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Sorry for bringing the old thread up,

I have tried that method and it does not work good enough for my purpose. First, it creates a snapshot of the whole screen (each file is 7Mb) and I need to make a snapshot of just a small portion on the screen with size 320x240. Second, I am trying to create a smooth movie of visualization output using around 20 fps. I cannot save the whole screen 20 times per second.

Does anybody know any solution? I am getting close to buying a web cam and directing it on the screen of the workstation to record a movie of the output.
 
  


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