From a4196851217ead3f94e0c1ef00142a51b2ebbf3d Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Sat, 25 Mar 2023 21:36:14 -0700
Subject: [PATCH] nice

---
 video-bulk/atarifiy.sh | 62 ++++++++++++++++++++++++++++++++++++++++++
 video-cat/extract.sh   |  2 +-
 video-doom/extract.sh  |  2 +-
 video/extract.sh       |  2 +-
 4 files changed, 65 insertions(+), 3 deletions(-)
 create mode 100644 video-bulk/atarifiy.sh

diff --git a/video-bulk/atarifiy.sh b/video-bulk/atarifiy.sh
new file mode 100644
index 0000000..95b8300
--- /dev/null
+++ b/video-bulk/atarifiy.sh
@@ -0,0 +1,62 @@
+set -e
+
+INFILE="$1"
+# additional params can be input to the extraction
+# for time or seek
+shift
+
+mkdir -p temp
+
+ffmpeg \
+    -i "$INFILE" \
+    -r 60000/1001 \
+    -vf 'scale=256:-2' \
+    -an \
+    "$@" \
+    -y "temp/$INFILE-%04d.png"
+
+ffmpeg \
+    -i "$INFILE" \
+    -vn \
+    -ac 1 \
+    -ar 15734 \
+    -acodec pcm_u8 \
+    "$@" \
+    -y "temp/$INFILE-audio.wav" || echo no audio
+
+for frame in "temp/$INFILE-"[0-9][0-9][0-9][0-9].png
+do
+    n="${frame#temp/$INFILE-}"
+    n="${n%.png}"
+    out="temp/$INFILE-dither-${n}"
+    last="${n:0-1}"
+    node ../dither-image.js "$frame" "$out" &
+    if (( last == 9 ))
+    then
+        echo "frame $n"
+        wait
+    fi
+done
+wait
+
+if [ -f "temp/$INFILE-audio.wav" ]
+then
+    ffmpeg \
+        -r 60000/1001 \
+        -i "temp/$INFILE-dither-%04d.png" \
+        -i "temp/$INFILE-audio.wav" \
+        -ac 2 \
+        -ar 48000 \
+        -vf 'pad=w=534' \
+        -pix_fmt yuv420p \
+        -movflags +faststart \
+        -y "$INFILE-dither.mp4"
+else
+    ffmpeg \
+        -r 60000/1001 \
+        -i "temp/$INFILE-dither-%04d.png" \
+        -vf 'pad=w=534' \
+        -pix_fmt yuv420p \
+        -movflags +faststart \
+        -y "$INFILE-dither.mp4"
+fi
diff --git a/video-cat/extract.sh b/video-cat/extract.sh
index 8675eb7..b4faa3c 100644
--- a/video-cat/extract.sh
+++ b/video-cat/extract.sh
@@ -4,7 +4,7 @@ mkdir -p frames
 
 ffmpeg \
     -i 'cats computer fun.mp4' \
-    -vf 'scale=320:150,pad=h=192:y=5' \
+    -vf 'scale=256:144' \
     -an \
     -y 'frames/cats-%04d.png'
 
diff --git a/video-doom/extract.sh b/video-doom/extract.sh
index a92ff17..87d2972 100644
--- a/video-doom/extract.sh
+++ b/video-doom/extract.sh
@@ -8,7 +8,7 @@ ffmpeg \
     -i 'doom-speedrun.webm' \
     -t $TIME \
     -r 60000/1001 \
-    -vf 'scale=320:192' \
+    -vf 'scale=256:192' \
     -an \
     -y 'frames/doom-%04d.png'
 
diff --git a/video/extract.sh b/video/extract.sh
index 4f8070a..237613c 100644
--- a/video/extract.sh
+++ b/video/extract.sh
@@ -4,7 +4,7 @@ mkdir -p frames
 
 ffmpeg \
     -i colamath-dv.avi \
-    -vf 'yadif=1,scale=320:200,crop=h=192:y=4' \
+    -vf 'yadif=1,scale=256:192' \
     -an \
     -y 'frames/colamath-%04d.png'