yongqianme · November 22, 2023 20:46 · Feb 19, 2023 · Nov 10, 2021 · Aug 11, 2021 · Aug 7, 2021
diff --git a/image-and-video.md b/image-and-video.md
@@ -1,101 +1 @@
-### imagemagick
-* Nornalize all images of a folder converting them to jpgs with 90% quality (warning, removes original files):
-```
-rename 's/\.JPG$/\.jpg/' *.JPG
-rename 's/\.JPEG$/\.jpg/' *.JPEG
-rename 's/\.jpeg$/\.jpg/' *.jpeg
-mogrify -format jpg *.png
-mogrify -resize 1600x1280\> -quality 90 *.jpg
-rm *.png
-```
-* Generate 100x100 JPG thumbnails at a `/thumbs' subfolder from all JPG images of current folder, padding with black:
-```
-mkdir thumbs
-mogrify -format jpg -quality 90 -path thumbs -unsharp 0x.5 -thumbnail 100x100 -background black -gravity center -extent 100x100 *.jpg
-cd thumbs
-rename 's/^/t_/' *.jpg
-```
-* [Examples of ImageMagick Usage](http://www.imagemagick.org/Usage/) (official)
-* [Fred's ImageMagick scripts](http://www.fmwconcepts.com/imagemagick/index.php)
-
-* resize an image pixelating (without blending pixels):
-```convert input.png -filter box -resize 400% output.png```
-
-* generate a favicon from pngs (optimizes pretty well):
-```convert 16.png 32.png 48.png favicon.ico```
-
-
-### webp
-* setup:
-```
-sudo apt install webp
-```
-* convert to png:
-```
-dwebp file.webp -o file.png
-```
-* convert one image to jpg (using ImageMagick):
-```
-dwebp file.webp -o – | convert – file.jpg
-```
-* convert all images from folder to jpg (using ImageMagick):
-```
-for f in *.webp; do dwebp "$f" -o - | convert - "${f%.webp}.jpg"; done
-```
-- convert to webp lossy - JPG:
-```
-for f in *.jpg; do cwebp "$f" -q 90 -m 6 -o "${f%.jpg}.webp" -quiet; done
-```
-- convert to lossless webp - PNG:
-```
-for f in *.png; do cwebp "$f" -lossless -m 6 -q 100 -o "${f%.png}.webp" -quiet; done
-```
-- convert to webp lossy with alpha channel - GIF? (pending testing):
-```
-for f in *.gif; do cwebp "$f" -q 90 -alpha_q 100 -m 6 -o "${f%.gif}.webp" -quiet; done
-```
-
-### ffmpeg
-Animated GIF to MP4 video optimized for web:
-```
-ffmpeg -i animation.gif -b:v 0 -crf 40 -vf scale=600:-1 video.mp4
-```
-
-Cut a fragment from a video (without reencoding):
-```
-# 2.5 mins from starting time, without reencoding
-ffmpeg -ss 00:45:16 -i source.mp4 -t 150 -c:v copy -c:a copy test.mp4
-```
-
-Reverse the frames from a video (Source: https://stackoverflow.com/questions/2553448/encode-video-in-reverse)
-```
-# Dump all video frames
-ffmpeg -i test.mp4 -an -qscale 1 %06d.jpg
-
-# Dump audio (TODO: remove/skip)
-ffmpeg -i test.mp4 -vn -ac 2 audio.wav
-
-# Cat video frames in reverse order to FFmpeg as input
-cat $(ls -r *jpg) | ffmpeg -f image2pipe -vcodec mjpeg -r 25 -i - -i audio.wav -vcodec libx264 -preset slow  -crf 20 -threads 0 -acodec flac reversed.mkv
-```
-
-### guetzli
-Needs [special binary](https://github.com/Kartones/guetzli)
-```
-find . -type f -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
-find . -type f -name "*.jpg" -exec rm {} +
-find . -type f -name "*.jpeg" | rename "s/\.jpeg$//"
-```
-If don't want to recurse directories:
-```
-find . -type f -maxdepth 1 -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
-rm *.jpg
-rename "s/\.jpeg$//" *.jpeg
-```
-
-### webm
-- To capture screencasts, I use [Kazam Screencaster](https://launchpad.net/kazam) (Linux)
-- To convert from `webm` to `gif`, I use [Online Converter](https://www.onlineconverter.com/convert/303aee2813c6043e6841c1c1e77e61bd56): Good compression quality and decent file size.
-
-### favicons
-- [Optimizing favicons](https://gist.github.com/jaydenseric/a647f56e09e7ccbcb05867f4da1b6df2) + [ImageOptim online](https://imageoptim.com/online)
+Moved to [https://blog.kartones.net/page/image-and-video-cli-cheatsheet/](https://blog.kartones.net/page/image-and-video-cli-cheatsheet/)
diff --git a/image-and-video.md b/image-and-video.md
@@ -95,4 +95,7 @@ rename "s/\.jpeg$//" *.jpeg
 
 ### webm
 - To capture screencasts, I use [Kazam Screencaster](https://launchpad.net/kazam) (Linux)
-- To convert from `webm` to `gif`, I use [Online Converter](https://www.onlineconverter.com/convert/303aee2813c6043e6841c1c1e77e61bd56): Good compression quality and decent file size.
+- To convert from `webm` to `gif`, I use [Online Converter](https://www.onlineconverter.com/convert/303aee2813c6043e6841c1c1e77e61bd56): Good compression quality and decent file size.
+
+### favicons
+- [Optimizing favicons](https://gist.github.com/jaydenseric/a647f56e09e7ccbcb05867f4da1b6df2) + [ImageOptim online](https://imageoptim.com/online)
diff --git a/image-and-video.md b/image-and-video.md
@@ -21,6 +21,10 @@ rename 's/^/t_/' *.jpg
 * resize an image pixelating (without blending pixels):
 ```convert input.png -filter box -resize 400% output.png```
 
+* generate a favicon from pngs (optimizes pretty well):
+```convert 16.png 32.png 48.png favicon.ico```
+
+
 ### webp
 * setup:
 ```

diff --git a/image-and-video.md b/image-and-video.md
@@ -57,6 +57,24 @@ Animated GIF to MP4 video optimized for web:
 ffmpeg -i animation.gif -b:v 0 -crf 40 -vf scale=600:-1 video.mp4
 ```
 
+Cut a fragment from a video (without reencoding):
+```
+# 2.5 mins from starting time, without reencoding
+ffmpeg -ss 00:45:16 -i source.mp4 -t 150 -c:v copy -c:a copy test.mp4
+```
+
+Reverse the frames from a video (Source: https://stackoverflow.com/questions/2553448/encode-video-in-reverse)
+```
+# Dump all video frames
+ffmpeg -i test.mp4 -an -qscale 1 %06d.jpg
+
+# Dump audio (TODO: remove/skip)
+ffmpeg -i test.mp4 -vn -ac 2 audio.wav
+
+# Cat video frames in reverse order to FFmpeg as input
+cat $(ls -r *jpg) | ffmpeg -f image2pipe -vcodec mjpeg -r 25 -i - -i audio.wav -vcodec libx264 -preset slow  -crf 20 -threads 0 -acodec flac reversed.mkv
+```
+
 ### guetzli
 Needs [special binary](https://github.com/Kartones/guetzli)
 ```

diff --git a/image-and-video.md b/image-and-video.md
@@ -69,4 +69,8 @@ If don't want to recurse directories:
 find . -type f -maxdepth 1 -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
 rm *.jpg
 rename "s/\.jpeg$//" *.jpeg
-```
+```
+
+### webm
+- To capture screencasts, I use [Kazam Screencaster](https://launchpad.net/kazam) (Linux)
+- To convert from `webm` to `gif`, I use [Online Converter](https://www.onlineconverter.com/convert/303aee2813c6043e6841c1c1e77e61bd56): Good compression quality and decent file size.
diff --git a/imagemagick.md → image-and-video.md b/imagemagick.md → image-and-video.md
diff --git a/imagemagick.md b/imagemagick.md
@@ -38,10 +38,6 @@ dwebp file.webp -o – | convert – file.jpg
 ```
 for f in *.webp; do dwebp "$f" -o - | convert - "${f%.webp}.jpg"; done
 ```
-* convert to webp lossy with alpha channel - GIF:
-```
-for f in *.gif; do cwebp "$f" -q 90 -alpha_q 100 -m 6 -o "${f%.gif}.webp" -quiet; done
-```
 - convert to webp lossy - JPG:
 ```
 for f in *.jpg; do cwebp "$f" -q 90 -m 6 -o "${f%.jpg}.webp" -quiet; done
@@ -50,6 +46,10 @@ for f in *.jpg; do cwebp "$f" -q 90 -m 6 -o "${f%.jpg}.webp" -quiet; done
 ```
 for f in *.png; do cwebp "$f" -lossless -m 6 -q 100 -o "${f%.png}.webp" -quiet; done
 ```
+- convert to webp lossy with alpha channel - GIF? (pending testing):
+```
+for f in *.gif; do cwebp "$f" -q 90 -alpha_q 100 -m 6 -o "${f%.gif}.webp" -quiet; done
+```
 
 ### ffmpeg
 Animated GIF to MP4 video optimized for web:

diff --git a/imagemagick.md b/imagemagick.md
@@ -40,15 +40,15 @@ for f in *.webp; do dwebp "$f" -o - | convert - "${f%.webp}.jpg"; done
 ```
 * convert to webp lossy with alpha channel - GIF:
 ```
-for f in *.gif; do cwebp "$f" -q 90 -alpha_q 100 -m 6 -o "${f%.gif}.webp"; done
+for f in *.gif; do cwebp "$f" -q 90 -alpha_q 100 -m 6 -o "${f%.gif}.webp" -quiet; done
 ```
 - convert to webp lossy - JPG:
 ```
-for f in *.jpg; do cwebp "$f" -q 90 -m 6 -o "${f%.jpg}.webp"; done
+for f in *.jpg; do cwebp "$f" -q 90 -m 6 -o "${f%.jpg}.webp" -quiet; done
 ```
 - convert to lossless webp - PNG:
 ```
-for f in *.png; do cwebp "$f" -lossless -m 6 -q 100 -o "${f%.png}.webp"; done
+for f in *.png; do cwebp "$f" -lossless -m 6 -q 100 -o "${f%.png}.webp" -quiet; done
 ```
 
 ### ffmpeg

diff --git a/imagemagick.md b/imagemagick.md
@@ -38,7 +38,18 @@ dwebp file.webp -o – | convert – file.jpg
 ```
 for f in *.webp; do dwebp "$f" -o - | convert - "${f%.webp}.jpg"; done
 ```
-
+* convert to webp lossy with alpha channel - GIF:
+```
+for f in *.gif; do cwebp "$f" -q 90 -alpha_q 100 -m 6 -o "${f%.gif}.webp"; done
+```
+- convert to webp lossy - JPG:
+```
+for f in *.jpg; do cwebp "$f" -q 90 -m 6 -o "${f%.jpg}.webp"; done
+```
+- convert to lossless webp - PNG:
+```
+for f in *.png; do cwebp "$f" -lossless -m 6 -q 100 -o "${f%.png}.webp"; done
+```
 
 ### ffmpeg
 Animated GIF to MP4 video optimized for web:

diff --git a/imagemagick.md b/imagemagick.md
@@ -15,6 +15,7 @@ mogrify -format jpg -quality 90 -path thumbs -unsharp 0x.5 -thumbnail 100x100 -b
 cd thumbs
 rename 's/^/t_/' *.jpg
 ```
+* [Examples of ImageMagick Usage](http://www.imagemagick.org/Usage/) (official)
 * [Fred's ImageMagick scripts](http://www.fmwconcepts.com/imagemagick/index.php)
 
 * resize an image pixelating (without blending pixels):

diff --git a/imagemagick.md b/imagemagick.md
@@ -17,6 +17,9 @@ rename 's/^/t_/' *.jpg
 ```
 * [Fred's ImageMagick scripts](http://www.fmwconcepts.com/imagemagick/index.php)
 
+* resize an image pixelating (without blending pixels):
+```convert input.png -filter box -resize 400% output.png```
+
 ### webp
 * setup:
 ```

diff --git a/imagemagick.md b/imagemagick.md
@@ -26,10 +26,14 @@ sudo apt install webp
 ```
 dwebp file.webp -o file.png
 ```
-* convert to jpg (using ImageMagick):
+* convert one image to jpg (using ImageMagick):
 ```
 dwebp file.webp -o – | convert – file.jpg
 ```
+* convert all images from folder to jpg (using ImageMagick):
+```
+for f in *.webp; do dwebp "$f" -o - | convert - "${f%.webp}.jpg"; done
+```
 
 
 ### ffmpeg

diff --git a/imagemagick.md b/imagemagick.md
@@ -17,6 +17,27 @@ rename 's/^/t_/' *.jpg
 ```
 * [Fred's ImageMagick scripts](http://www.fmwconcepts.com/imagemagick/index.php)
 
+### webp
+* setup:
+```
+sudo apt install webp
+```
+* convert to png:
+```
+dwebp file.webp -o file.png
+```
+* convert to jpg (using ImageMagick):
+```
+dwebp file.webp -o – | convert – file.jpg
+```
+
+
+### ffmpeg
+Animated GIF to MP4 video optimized for web:
+```
+ffmpeg -i animation.gif -b:v 0 -crf 40 -vf scale=600:-1 video.mp4
+```
+
 ### guetzli
 Needs [special binary](https://github.com/Kartones/guetzli)
 ```

diff --git a/imagemagick.md b/imagemagick.md
@@ -15,6 +15,7 @@ mogrify -format jpg -quality 90 -path thumbs -unsharp 0x.5 -thumbnail 100x100 -b
 cd thumbs
 rename 's/^/t_/' *.jpg
 ```
+* [Fred's ImageMagick scripts](http://www.fmwconcepts.com/imagemagick/index.php)
 
 ### guetzli
 Needs [special binary](https://github.com/Kartones/guetzli)

diff --git a/imagemagick.md b/imagemagick.md
@@ -17,7 +17,7 @@ rename 's/^/t_/' *.jpg
 ```
 
 ### guetzli
-Needs [special binary](https://github.com/google/guetzli/)
+Needs [special binary](https://github.com/Kartones/guetzli)
 ```
 find . -type f -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
 find . -type f -name "*.jpg" -exec rm {} +

diff --git a/imagemagick.md b/imagemagick.md
@@ -21,7 +21,7 @@ Needs [special binary](https://github.com/google/guetzli/)
 ```
 find . -type f -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
 find . -type f -name "*.jpg" -exec rm {} +
-find -type f -name "*.jpeg" | rename "s/\.jpeg$//"
+find . -type f -name "*.jpeg" | rename "s/\.jpeg$//"
 ```
 If don't want to recurse directories:
 ```

diff --git a/imagemagick.md b/imagemagick.md
@@ -20,12 +20,12 @@ rename 's/^/t_/' *.jpg
 Needs [special binary](https://github.com/google/guetzli/)
 ```
 find . -type f -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
-rm -rf *.jpg
-find -type f -name '*.jpeg' | rename 's/\.jpeg$//'
+find . -type f -name "*.jpg" -exec rm {} +
+find -type f -name "*.jpeg" | rename "s/\.jpeg$//"
 ```
 If don't want to recurse directories:
 ```
 find . -type f -maxdepth 1 -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
 rm *.jpg
-rename 's/\.jpeg$//' *.jpeg
+rename "s/\.jpeg$//" *.jpeg
 ```
diff --git a/imagemagick.md b/imagemagick.md
@@ -19,11 +19,13 @@ rename 's/^/t_/' *.jpg
 ### guetzli
 Needs [special binary](https://github.com/google/guetzli/)
 ```
-find . -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
-rm *.jpg
-rename 's/\.jpeg$//' *.jpeg
+find . -type f -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
+rm -rf *.jpg
+find -type f -name '*.jpeg' | rename 's/\.jpeg$//'
 ```
-If don't want to recurse directories, alternative `find` call:
+If don't want to recurse directories:
 ```
-find . -maxdepth 1 -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
+find . -type f -maxdepth 1 -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
+rm *.jpg
+rename 's/\.jpeg$//' *.jpeg
 ```
diff --git a/imagemagick.md b/imagemagick.md
@@ -19,11 +19,11 @@ rename 's/^/t_/' *.jpg
 ### guetzli
 Needs [special binary](https://github.com/google/guetzli/)
 ```
-find . -name "*.jpg" -exec guetzli --quality 90 {} {}.jpeg \;
+find . -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
 rm *.jpg
 rename 's/\.jpeg$//' *.jpeg
 ```
 If don't want to recurse directories, alternative `find` call:
 ```
-find . -maxdepth 1 -name "*.jpg" -exec guetzli --quality 90 {} {}.jpeg \;
+find . -maxdepth 1 -name "*.jpg" -exec guetzli --quality 85 {} {}.jpeg \;
 ```
diff --git a/imagemagick.md b/imagemagick.md
@@ -22,4 +22,8 @@ Needs [special binary](https://github.com/google/guetzli/)
 find . -name "*.jpg" -exec guetzli --quality 90 {} {}.jpeg \;
 rm *.jpg
 rename 's/\.jpeg$//' *.jpeg
+```
+If don't want to recurse directories, alternative `find` call:
+```
+find . -maxdepth 1 -name "*.jpg" -exec guetzli --quality 90 {} {}.jpeg \;
 ```
diff --git a/imagemagick.md b/imagemagick.md
@@ -1,3 +1,4 @@
+### imagemagick
 * Nornalize all images of a folder converting them to jpgs with 90% quality (warning, removes original files):
 ```
 rename 's/\.JPG$/\.jpg/' *.JPG
@@ -13,4 +14,12 @@ mkdir thumbs
 mogrify -format jpg -quality 90 -path thumbs -unsharp 0x.5 -thumbnail 100x100 -background black -gravity center -extent 100x100 *.jpg
 cd thumbs
 rename 's/^/t_/' *.jpg
+```
+
+### guetzli
+Needs [special binary](https://github.com/google/guetzli/)
+```
+find . -name "*.jpg" -exec guetzli --quality 90 {} {}.jpeg \;
+rm *.jpg
+rename 's/\.jpeg$//' *.jpeg
 ```
diff --git a/imagemagick.md b/imagemagick.md
@@ -1,7 +1,8 @@
-* Nornalize all images of a folder converting them to jpgs with 90% quality (warning, removes original files)
+* Nornalize all images of a folder converting them to jpgs with 90% quality (warning, removes original files):
 ```
 rename 's/\.JPG$/\.jpg/' *.JPG
 rename 's/\.JPEG$/\.jpg/' *.JPEG
+rename 's/\.jpeg$/\.jpg/' *.jpeg
 mogrify -format jpg *.png
 mogrify -resize 1600x1280\> -quality 90 *.jpg
 rm *.png

diff --git a/imagemagick.md b/imagemagick.md
@@ -5,4 +5,11 @@ rename 's/\.JPEG$/\.jpg/' *.JPEG
 mogrify -format jpg *.png
 mogrify -resize 1600x1280\> -quality 90 *.jpg
 rm *.png
+```
+* Generate 100x100 JPG thumbnails at a `/thumbs' subfolder from all JPG images of current folder, padding with black:
+```
+mkdir thumbs
+mogrify -format jpg -quality 90 -path thumbs -unsharp 0x.5 -thumbnail 100x100 -background black -gravity center -extent 100x100 *.jpg
+cd thumbs
+rename 's/^/t_/' *.jpg
 ```
diff --git a/imagemagick.md b/imagemagick.md
@@ -2,7 +2,7 @@
 ```
 rename 's/\.JPG$/\.jpg/' *.JPG
 rename 's/\.JPEG$/\.jpg/' *.JPEG
-mogrify -resize 1600x1280\> -quality 90 *.jpg
 mogrify -format jpg *.png
+mogrify -resize 1600x1280\> -quality 90 *.jpg
 rm *.png
 ```
diff --git a/imagemagick.md b/imagemagick.md
@@ -0,0 +1,8 @@
+* Nornalize all images of a folder converting them to jpgs with 90% quality (warning, removes original files)
+```
+rename 's/\.JPG$/\.jpg/' *.JPG
+rename 's/\.JPEG$/\.jpg/' *.JPEG
+mogrify -resize 1600x1280\> -quality 90 *.jpg
+mogrify -format jpg *.png
+rm *.png
+```
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