[FFmpeg-user] Extract chapter names to a text file?

Dan Harkless ffmpeg at harkless.org
Tue Dec 6 02:41:24 EET 2022

On 12/5/2022 4:30 PM, Carl Zwanzig wrote:
> On 12/5/2022 4:20 PM, Laine wrote:
> >   
> > And the following appears to remove “title=“ from lines generated by "grep '^title=‘ chapters.txt” alone.
> > 
> > grep '^title=' chapters.txt | perl -pe 's/title=//s’
> I'm not clear you you'd use perl at all when sed is more common for this
> sort of thing (sed 's/title=//’), but whatever works for you.

If it were me, I'd also add a '^' to anchor the regular expression 
(regexp) to the beginning of the line, as in 's/^title=//', just on the 
off chance the string "title=" appears in a chapter name. That'll work 
in sed or perl.

And in the perl regexp, the 's' at the end isn't needed there (only 
changes how the '.' character is processed).  And if you copy and paste 
from the above, note that those curly quotes should be straight quotes.  
Putting that all together:

     grep '^title=' chapters.txt | perl -pe 's/^title=//'


     grep '^title=' chapters.txt | sed 's/^title=//'

Dan Harkless

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