From 2e6455e537ba781cc2fe6239ef449cc1b91a211c Mon Sep 17 00:00:00 2001
From: Krzysztof Rudnicki <krzysztofrudnicki0@gmail.com>
Date: Thu, 5 Dec 2024 19:35:32 +0100
Subject: [PATCH] feat: added script for converting video to mp4 and to keep it
 below discord video size limit

---
 Bash/convert.sh | 67 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100755 Bash/convert.sh

diff --git a/Bash/convert.sh b/Bash/convert.sh
new file mode 100755
index 0000000..c1123e7
--- /dev/null
+++ b/Bash/convert.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+# Default values
+TARGET_EXT="mp4"
+TARGET_SIZE=10M
+
+# Parse arguments
+if [ -n "$1" ]; then
+  INPUT_PATH="$1"
+else
+  INPUT_PATH="."
+fi
+
+if [ -n "$2" ]; then
+  TARGET_EXT="$2"
+fi
+
+if [ -n "$3" ]; then
+  TARGET_SIZE="$3"
+fi
+
+# Create output directory
+OUTPUT_DIR="converted"
+mkdir -p "$OUTPUT_DIR"
+
+# Function to convert video
+convert_video() {
+  local input_file="$1"
+  local output_file="$OUTPUT_DIR/${input_file%.*}.$TARGET_EXT"
+  
+  # Get video duration in seconds
+  DURATION=$(ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "$input_file")
+  echo "Duration: $DURATION seconds"
+  
+  # Convert target size to bytes
+  TARGET_SIZE_BYTES=$(numfmt --from=iec "$TARGET_SIZE")
+    
+  # Calculate target bitrate in kilobits per second
+  TARGET_BITRATE=$(echo "($TARGET_SIZE_BYTES * 8) / $DURATION / 2000" | bc) # Reduce by 10% to ensure size is below target
+  
+  # Convert video
+  ffmpeg -i "$input_file" -b:v "${TARGET_BITRATE}k" -c:a copy "$output_file"
+  
+  # Get original and converted video sizes
+  ORIGINAL_SIZE=$(stat -c%s "$input_file")
+  CONVERTED_SIZE=$(stat -c%s "$output_file")
+  
+  # Print out details
+  echo "Original size: $(numfmt --to=iec $ORIGINAL_SIZE)"
+  echo "Video length: $DURATION seconds"
+  echo "Target size: $TARGET_SIZE"
+  echo "Converted size: $(numfmt --to=iec $CONVERTED_SIZE)"
+  echo "Target bitrate: ${TARGET_BITRATE}kbps"
+}
+
+# Export function for find command
+export -f convert_video
+export TARGET_EXT
+export TARGET_SIZE
+export OUTPUT_DIR
+
+# Find and convert videos
+if [ -d "$INPUT_PATH" ]; then
+  find "$INPUT_PATH" -type f -name "*.mp4" -o -name "*.mkv" -o -name "*.avi" -o -name "*.webm" -exec bash -c 'convert_video "$0"' {} \;
+else
+  convert_video "$INPUT_PATH"
+fi