Add 'concatenate.sh'

concatenate.sh

@@ -0,0 +1,42 @@
+#!/bin/bash -e
+
+RESOLUTION_X=1920
+RESOLUTION_Y=1080
+
+VIDEO_CODEC="libx264"
+VIDEO_BITRATE="2M"
+
+AUDIO_CODEC="aac"
+AUDIO_BITRATE="192K"
+
+function cleanup {
+    rm -rf ./.tmp/
+    rm -rf ./.list.txt
+    rm -rf ./.shuffled.txt
+}
+
+trap cleanup EXIT
+
+
+mkdir -p ./.tmp/
+mkdir -p ./out/
+
+
+shopt -s nullglob
+shopt -s nocaseglob
+
+for video in *.{mp4,mkv,avi}; do
+    OUT=".tmp/${video%.*}-resized.mp4"
+    ffmpeg -i "${video}" \
+    -vf "scale=${RESOLUTION_X}:${RESOLUTION_Y}:force_original_aspect_ratio=decrease,pad=${RESOLUTION_X}:${RESOLUTION_Y}:-1:-1:color=black" \
+    -c:v ${VIDEO_CODEC} -b:v ${VIDEO_BITRATE} -c:a ${AUDIO_CODEC} -b:a ${AUDIO_BITRATE} \
+    "${OUT}"
+    echo "file '${OUT}'" >> ./.list.txt
+done
+
+shopt -u nocaseglob
+shopt -u nullglob
+
+shuf ./.list.txt > ./.shuffled.txt
+
+ffmpeg -f concat -safe 0 -i ./.shuffled.txt -c:v copy -c:a copy ./out/output.mp4