Topic - How can we take a picture (snapshot) from a video ?



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Topic Starter adeel - Posted on Tuesday, October 30 2007 06:01:24 AM
How can we take a picture (snapshot) from a video ?
In windows it is easy, we had to stop the 3d acceleration disabled and then take a snapshot. But in Linux there is no 3d acceleration option (to disabled it).

Can we take a picture by mencoder. ( I think the z buffer is skewing the snapshot) ?
Can we some how disable the z buffer and take snap shot of the frame stop in the video ?

I know button 's' has some to do with it because it show a taking a vertial screenshot something and sending it (but where it not in tmp, or home folder)
adeel - Posted on Tuesday, October 30 2007 01:03:14 PM
If anybody know how to
stop the 3d acceleration (graphic)?
of take a frame from a movie in linux?

please reply
nikola_ - Posted on Wednesday, October 31 2007 12:41:56 AM
I think this could work..
a dummy (but not easy method) is

1) open virtual consol (ctrl+alt+f1)
2) sudo /etc/init.d/gdm stop
3) modify /etc/X11/xorg.conf with generic driver "vesa" in place of "nvidia" or "ati", commenting all option line (if you have) of screen,
(e.g Option "AllowGLXWithComposite" "True") and commenting load glx module.
4) sudo /etc/init.d/gdm start

PS: make a backup of your "xorg.conf" before modify it

problably exist something easier...
-nicola
adeel - Posted on Friday, November 2 2007 02:04:40 AM
2) sudo /etc/init.d/gdm stop
3) modify /etc/X11/xorg.conf with generic driver "vesa" in place of "nvidia" or "ati", commenting all option line (if you have) of screen,
(e.g Option "AllowGLXWithComposite" "True") and commenting load glx module.
4) sudo /etc/init.d/gdm start

-nicola
first thank for the reply "nicola". the number of replies i seen on the forum get my moral down quit a bit (although it is an official mplayer forum)
Now for the solution
first when ever i had tried sudo on the terminal (i am new to linux (fedora)) it ask me the root password when i give the password it ask me again n again n again .
can i execute the root commands when i am login as root (the sudo mess)
nikola_ - Posted on Sunday, November 11 2007 11:47:54 PM
Excuses me but I don't go quickly on this forum..
(how you said, I have a problem too, but no solution is proposed, too many answer..)

Yes, you should use root instead su, but probably is better if you ask on fedora forums; my solution works with debian-based system..

Sorry for later,
-nicola
tex2us - Posted on Wednesday, February 27 2008 12:13:49 AM
There is no need to disable the acceleration. Use
mplayer -vf screenshot as the starting command and the s key will create a shot000x.png file in the active directory
The only problem is that the screenshot filter must be compiled with mplayer