Using find and xargs with pipes

[FakeOutdoorsman]

I'm trying to convert Nikon NEF images to jpg. Usually I use find and xargs for batch processes like this for example:

find . -name "*.flac" -exec basename \{\} .flac \; | xargs -i ffmpeg -i \{\}.flac -acodec libvorbis -aq 3 \{\}.ogg

However, my latest attempt is giving me no output because I can't seem to get xargs to work with pipes. An individual set of commands works:

dcraw -w -c MEY_7046.NEF | convert - -resize 25% MEY_7046.jpg
exiftool -overwrite_original -TagsFromFile MEY_7046.NEF MEY_7046.jpg
dcraw -z MEY_7046.jpg

A nice set of commands, but not yet practical for converting a DVD with multiple directories. My truncated find-isized version does nothing:

find . -name "*.NEF" -exec basename \{\} .NEF \; | xargs -i dcraw -w -c \{\}.NEF | convert - -resize 25% \{\}.jpg

Any ideas of where I'm going wrong?

[diesch]

That pipes the output of all the dcraw runs together into one convert call.

Try

find . -name "*.NEF" -exec basename \{\} .NEF \; | xargs -i sh -c 'dcraw -w -c $0.NEF | convert - -resize 25% $0.jpg' {}

[boardhead]

You can skip the "dcraw -z" command by using "exiftool -tagsfromfile %d%f.NEF -all '-filemodifydate<createdate' ...".

[FakeOutdoorsman]

That pipes the output of all the dcraw runs together into one convert call.

Try

find . -name "*.NEF" -exec basename \{\} .NEF \; | xargs -i sh -c 'dcraw -w -c $0.NEF | convert - -resize 25% $0.jpg' {}

Excellent. That worked perfectly. Thanks.

You can skip the "dcraw -z" command by using "exiftool -tagsfromfile %d%f.NEF -all '-filemodifydate<createdate' ...".

Interesting, although I decided exiftool and dcraw -z commands were unnecessary this time.

[Brimfulof2]

I think what you've got here could be just what I'm looking for, but I'm really new to *nix, Ubuntu and command-line stuff so I want to check.

If I understand correctly:

This command searches through a directory and sub-directories, finding any files with the NEF extension and converts them to JPG (at 25% reduction).

So does this replace the NEF files with JPGs or just add the JPGs?
Do I need to download any repositories before running this command?

Thanks in advance for your help.