[MPlayer-users] .vob input and cropdetecting chapters

[D Richard Felker III]

On Fri, Nov 14, 2003 at 10:12:27PM +0100, HR wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> 
> It seems to me that chapter selection (-chapter xx) does not work with
> .vob input and -vop cropdetect; it seems to default to chapter 1 or
> something - is this a bug or am I doing something wrong? I need this
> because first of all, chapter 1 is usually worthless for doing any
> reliable cropdetection, and second of all, cropping borders may change
> during the movie (most notably with remastered, "older" movies).
> 
> This is what I use when checking a DVD:
> 
> mencoder dvd://x -nosound -ovc lavc -vop cropdetect -o /dev/null
> -chapter xx
> 
> Checking a .vob is the same, only with the .vob replacing dvd://x

.vob's don't have chapters. That's part of the DVD structure. Use the
DVD as-is; ripping .vobs is pointless.

Rich