I have bunch of video of screen capture. I would like to remove some portion of the video from top. How can I do it in a batch, is there a software to do this out there. Thanks for all the replies.
AviSynth (<a href="http://en.wikipedia.org/wiki/AviSynth" rel="nofollow">http://en.wikipedia.org/wiki/AviSynth</a>) may offer what you seek. Note that the 3.0 rewrite (<a href="http://avisynth3.unite-video.com/" rel="nofollow">http://avisynth3.unite-video.com/</a>) runs on both Windows and Linux.
Virtualdub is a personal favorite. <a href="http://www.virtualdub.org/docs/vdscript.txt" rel="nofollow">http://www.virtualdub.org/docs/vdscript.txt</a><p>I suppose FFMPEG could work too.
Mencoder can crop videos:<p><pre><code> mencoder $1 -vf crop=322:242:26:225 -oac mp3lame -ovc lavc -o $2
</code></pre>
That command would extract a 322x242 rectangle from position 26, 225 in the video.