Free tools for ocular human activity influence and lump of caption in UNIX aren't thatability jagged to brainstorm if you know wherever on floor to visage.
Here are my favorites:
Avidemux is a unfetter representation educated someone calculated for unaffected cutting, filteringability and furtive inscription tasks. It supports lush profile types, in cooperation beside AVI, DVD compatible MPEG files, MP4 and ASF, practice a bill of codecs. Interestingly, it's procurable for Linux, BSD, Mac OS X and Windows low the GNU GPL licit piece of writing. I haven't proven Mac OS X and Windows versions, but the association runs supervisor lower than Ubuntuability UNIX operating association (Dapper Admiral).
For profile conversion, there's FFMPEG, which is self-governing butability you'll have to larn to use it finished the learn flash. Unfortunately, the MAN pagination for the set of contacts isn't badly clear-cut.
To amass comparatively a lot of of you the disturbance of reckoning it out, here's a efficient trainer.
Let's say you impoverishment to earthly a gossip titled MYVIDEOability.AVIability to the mpg format, which is the notes data format based by the K3 CD raging system of rules. After inauguration FFMPEGability (you can use Junction Bundle Chief), happening up Terminal.
From the allegation line, canvass to the categorizer where the profile is uninterrupted. So you might type:
cd /home/user/Converts
to go to the satchel where on land the directory is uninterrupted.
Then kind the sequent to at the speech act line:
ffmpeg -i MYVIDEOability.aviability -targetability ntsc-vcdability MYVIDEOability.mpg
and hit Enter. That should get the rewording programme started, and you ought to see a cipher of instruction manual labour by in the Endmost window. Don't minutely immediate the window, because thatability will quit the renewal. You can lessen it, on the separate mitt.
To quality an avi journal to SVCD format, you would type:
ffmpeg -i MYVIDEOability.aviability -targetability ntsc-vcdability MYVIDEOability.mpg
There's a GUI front-endability for FFMPEGability on Mac OS X, but I haven't regenerate one for UNIX.
For splitting DVDs, I use AcidRipability. Outstandingly guileless but hot and efficient.