[olug] Creating clips from DVD

[Nathan D. Rotschafer]

I would have to look but I know I did this for Matt Payne using my  
PowerBook G4 (since upgraded to a MacBook Pro) and it was easy with  
the tools I found on OSX.  So if you have an OSX machine you might  
look at it there.  If you want more info just let me know!

Thanks,

Nathan D. Rotschafer




On May 8, 2006, at 8:53 PM, Lane Roberts wrote:

> Thanks for writing matt - I ended up just using a computer that was
> there and seeking to the time stamp - which was a lot better than the
> people presenting before me.  I'll have to play around with this over
> the summer though - so I know how to do it next time.
> Thanks again
> Lane
>
> On 5/6/06, Matt Anderson <manderso at cs.wisc.edu> wrote:
>> Do you have the video extracted from the DVD(s)?  I imagine a 3 step
>> process for what you describe -- extract video, edit video, write
>> video to DVD.
>>
>> The mencoder binary that is bundled with mplayer can (if all codecs,
>> copy protection circumvention and whatnot are installed correctly)
>> extract clips from a DVD and transcode them into a format of your
>> choosing.  I haven't done this in a couple of years, but some notes I
>> dug up on the proper incantation:
>>
>> (excerpted) options:
>>    -vop          activate comma separated list of video filters
>>    -zoom         allow software scaling, will force with -vop scale
>>    -xy           scale width to x, keep aspect ratio (if x > 8)
>>    -o            output file
>>    -oac          encode with given audio codec (mp3lame)
>>    -lameopts     options to use if encoding mp3
>>    -ovc          encode with given video codec
>>    -lavcopts     options to use if encoding with libavcodec
>>    -ss           seek
>>    -endpos       stop after some time interval
>>    -vop lavdeint deinterlace video with libavcodec
>>
>>    mencoder -dvd 1 -vop scale -zoom -xy 480 -o /tmp/my_video.avi -oac
>> mp3lame -lameopts cbr:preset=192 -ovc lavc -lavcopts
>> vcodec=mpeg4:vhq:vbitrate=800:keyint=2 -ss 55:28 -endpos 19
>>
>> will jump to a point supposedly 55 minutes and 28 seconds into the
>> clip, encode the video it finds there mpeg4 with mp3 audio, resized
>> (proportionately) to a width of 480, for 19 seconds, and write it out
>> to the file /tmp/my_video.avi.  I say supposedly as I recall it
>> didn't accurately jump there (as measured by say, the mplayer
>> timestamp if you were viewing the dvd) -- finding the desired start
>> point fell back (for me) to doing binary search (using mplayer -ss
>> TIME to see where it started) and eventually finding the right spot.
>> Unnecessarily painstaking and annoying, but it did work.
>>
>> I've never really tried to edit video with a Linux tool -- I have no
>> recommendation on that.  I also haven't tried to create a video DVD
>> with a Linux tool, so no recommendations there either.  These days,
>> I'd do quick editing jobs with Quicktime Pro on a Mac (which I would
>> recommend if you have access to / inclination to use a Mac).  Of
>> course, if you have access to a Mac, there's also iDVD which would
>> probably make short work of step three as well (though I've still
>> never tried to do that).
>>
>> A good resource for these sorts of activities is http://
>> www.videohelp.com/ -- you might find guides there that you find to be
>> useful.
>>
>> Good luck...
>>
>> --
>>   Matt Anderson
>>
>>
>> On May 6, 2006, at 6:36 PM, Lane Roberts wrote:
>>
>>> Here's the objective:
>>>  I'm trying to get a compilation of about 5 minutes of clips from a
>>> dvd spliced together onto a dvd that will pause between each clip 
>>> (its
>>> for a presentation).
>>>
>>> I've never really done anything with video before, so this is a
>>> learning experience, but does anyone have any pointers or (better  
>>> yet)
>>> a direct guide?
>>> Google has been somewhat helpful, but everything I've found so  
>>> far is
>>> about going directly to AVI, and I don't need to do that.
>>> Thanks
>>> Lane
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