CODEWITHSUNDEEP
command-linedirectoryputtylibjpegjpegtran
Bas
Bas

Reputation: 2400

jpegtran whole directory

I want to optimize the whole test folder with jpg images from a command line. I found this but it doesn't work:

cd /home/site/html/update/test/
find . -exec jpegtran -optimize "{}" "{}.opti.jpg" "{}" \;

I want to overwrite the existing images.

Suggestions?

Answer:

find /img/path -name "*.jpg" -type f -exec jpegtran -copy none -optimize -outfile {} {} \;

Upvotes: 8

Views: 5410

Answers (3)

Mark Setchell
Mark Setchell

Reputation: 207758

Get them all done more succinctly and in parallel using GNU Parallel as follows:

parallel jpegtran -copy none -optimize -outfile {} {} ::: *.jpg

Use parallel --eta ... or parallel --bar ... for estimated time of arrival or progress bar.

Upvotes: 0

Joyanta J. Mondal
Joyanta J. Mondal

Reputation: 1047

Though it is solved here pretty earlier but talking about Python approach:

import subprocess
for image_name in arr:
    subprocess.call(["jpegtran", "-your", "-instructions"])

Let's say your instruction is something like:

jpegtran -optimize -progressive -scans script_new.txt -outfile progressive.jpg original.jpg

So your instruction will be like:

subprocess.call(["jpegtran", "-optimize", "-progressive", "-scans", f"{scan_name}.txt", "-outfile", name_progressive, name_original])

For your convenience, name_progressive, name_original and scan_name are variables and concept f-string is used.

Upvotes: 0

Bas
Bas

Reputation: 2400

Answer:

find /img/path -name "*.jpg" -type f -exec jpegtran -copy none -optimize -outfile {} {} \;

Upvotes: 2

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