change ``bash headers to ``sh

vision/ffmpeg.md

@@ -14,25 +14,25 @@ The input file might be a device, such as a camera.
 
 Take the format as 'grab the x11 screen'.
 
-```bash
+```sh
 ffmpeg -f x11grab -s [screensize] -i :0.0 out.mkv
 ```
 
 Get screensize with
 
-```bash
+```sh
 xrandr -q
 ```
 
 or maybe just...
 
-```bash
+```sh
 ffmpeg -f x11grab -s "$(xdpyinfo | grep dimensions | awk '{print $2}')" -i :1.0 out.mkv
 ```
 
 # Add default pulse audio
 
-```bash
+```sh
 ffmpeg -f x11grab -s [screensize] -i :0.0 -f alsa -i default out.mkv
 ```
 
@@ -43,7 +43,7 @@ For problems, see pavucontrol.
 
 # Rotate
 
-```bash
+```sh
 ffmpeg -i in.mov -vf "transpose=1" out.mov
 ```
 
@@ -62,71 +62,71 @@ ffmpeg -i input.mp4 -vcodec libx264 -crf 20 output.mp4
 
 Check for supported formats:
 
-```bash
+```sh
 ffmpeg -formats
 ```
 
 To convert from mkv to mp4 we can use a codec rather than proper conversion.  Both are wrappers around other formats, so this conversion loses less quality than other conversion types.
 
-```bash
+```sh
 ffmpeg -i LostInTranslation.mkv -codec copy LostInTranslation.mp4
 ```
 
 Opus to mp3
 
-```bash
+```sh
 ffmpeg -i song.opus song.mp3
 ```
 
-```bash
+```sh
 ffmpeg -i video.flv video.mpeg
 ```
 
-```bash
+```sh
 ffmpeg -i input.webm -qscale 0 output.mp4
 ```
 
 # Video to Audio
 
-```bash
+```sh
 ffmpeg -i input.mp4 -vn output.mp3
 ```
 
 
 # Convert all mkv files to mp4
 
-```bash
+```sh
 for i in *.mkv; do
 ```
 
     > ffmpeg -i "$i" -codec copy "${i%.*}.mp4"
 
-```bash
+```sh
 done
 ```
 
 
 # Change resolution
 
-```bash
+```sh
 ffmpeg -i input.mp4 -filter:v scale=1280:720 -c:a copy output.mp4
 ```
 
 Or just crop:
 
-```bash
+```sh
 ffmpeg -i input.mp4 -filter:v "crop=w:h:x:y" output.mp4
 ```
 
 Or aspect ratio:
 
-```bash
+```sh
 ffmpeg -i input.mp4 -aspect 16:9 output.mp4
 ```
 
 Or trim to start and stop times:
 
-```bash
+```sh
 ffmpeg -i input.mp4 -ss 00:00:50 -codec copy -t 50 output.mp4
 ```
 
@@ -134,14 +134,14 @@ Indicate start times with -ss and time with -t in seconds.
 
 Or split a video into parts:
 
-```bash
+```sh
 ffmpeg -i input.mp4 -t 00:00:30 -c copy part1.mp4 -ss 00:00:30 -codec copy part2.mp4
 ```
 
 
 # Compress Video
 
-```bash
+```sh
 ffmpeg -i input.mp4 -vf scale=1280:-1 -c:v libx264 -preset veryslow -crf 24 output.mp4
 ```
 
@@ -149,19 +149,19 @@ ffmpeg -i input.mp4 -vf scale=1280:-1 -c:v libx264 -preset veryslow -crf 24 outp
 
 -r sets the frame rate, and -f selects the format.
 
-```bash
+```sh
 ffmpeg -i input.mp4 -r 1 -f image2 image-%2d.png
 ```
 
 # Add Images to Audio
 
-```bash
+```sh
 $ ffmpeg -loop 1 -i inputimage.jpg -i inputaudio.mp3 -c:v libx264 -c:a aac -strict experimental -b:a 192k -shortest output.mp4
 ```
 
 # Add Subtitles
 
-```bash
+```sh
 fmpeg -i input.mp4 -i subtitle.srt -map 0 -map 1 -c copy -c:v libx264 -crf 23 -preset veryfast output.mp4
 ```
 

vision/imagemagick.md

@@ -5,35 +5,35 @@ tags: [ "vision" ]
 
 Convert jpg to png.
 
-```bash
+```sh
 magick image.jpg image.png
 ```
 
-```bash
+```sh
 magick image.jpg -quality 50 image.jpg
 ```
 
 'Quality' must be from 1 to 100.
 
-```bash
+```sh
 magick -resize 50% image.jpg image2.jpg
 ```
 
 Resizing only changes jpegs.  Change a png with:
 
-```bash
+```sh
 magick input.png png8:out.png
 ```
 
 # Invert Colours
 
-```bash
+```sh
 magick input.jpg output.jpg -negate
 ```
 
 # Make Images Smaller
 
-```bash
+```sh
 magick image.jpg -resize 25% output.jpg
 ```
 
@@ -42,13 +42,13 @@ magick image.jpg -resize 25% output.jpg
 
 This is generally used for transparent images.
 
-```bash
+```sh
 magick -trim image.png output.png
 ```
 
 Make the white of an image transparent.
 
-```bash
+```sh
 magick -transparent white -fuzz 10% input.png output.png
 ```
 
@@ -57,14 +57,14 @@ The 'fuzz' option tells the computer that 'close to white' is fine.  You might w
 
 ## Dropshadow
 
-```bash
+```sh
 `magick <input file> \( +clone -background black -shadow 50x8+0+5 \) +swap -background none -layers merge +repage <output file>`
 ```
 
 
 # Convert every jpg in directory to png
 
-```bash
+```sh
 mogrify -format png *.jpg
 ```
 
@@ -96,20 +96,20 @@ $potrace -s output.ppm -o svgout.svg
 
 See your installed fonts:
 
-```bash
+```sh
 magick -list font
 ```
 
 Make an image showing day of the week:
 
-```bash
+```sh
 magick -fill blue -font Sauce-Code-Pro-Semibold-Nerd-Font-Complete-Mono -gravity center -pointsize 79 label:$(date +%A) day.png
 ```
 
 
 Make a meme:
 
-```bash
+```sh
 magick inputmemeimage.png -font impact -fill white -pointsize 84 -stroke black -strokewidth 3 -gravity north -annotate +0+20 'TOP MEME TEXT' -gravity south -annotate +0+20 'BOTTOM MEME TEXT' outputmemeimage.png
 ```
 

vision/qr_codes.md

@@ -5,24 +5,24 @@ tags: [ "qrencode", "zbar" ]
 
 Make a QR Code image:
 
-```bash
+```sh
 qrencode 'https://play.google.com/store/apps/details?id=org.briarproject.briar.android' -o "$FILE".png
 ```
 
 Make a QR Coded message in the terminal:
 
-```bash
+```sh
 qrencode -t ansi "Hello World"
 ```
 
 Read a QR Code image:
 
-```bash
+```sh
 zbarimg $FILE
 ```
 
 Show wifi QR code (only with Network Manager):
 
-```bash
+```sh
 nmcli device wifi show-password
 ```