Update

bash/convert_webm_to_prores4444.sh

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+#!/bin/bash
+
+# Script to convert all WebM files with alpha to ProRes 4444 MOV files
+# Overwrites existing MOV files by default
+
+# Check if directory parameter is provided
+if [ $# -eq 0 ]; then
+    echo "Usage: sh convert_webm_to_mov.sh <absolute_path_to_directory>"
+    echo "Example: sh convert_webm_to_mov.sh /Users/charlesteh/Desktop/mag-group-1/"
+    exit 1
+fi
+
+# Get the target directory from parameter
+target_dir="$1"
+
+# Check if directory exists
+if [ ! -d "$target_dir" ]; then
+    echo "Error: Directory '$target_dir' does not exist"
+    exit 1
+fi
+
+echo "Converting all WebM files in '$target_dir' to ProRes 4444 MOV..."
+
+# Check if ffmpeg is installed
+if ! command -v ffmpeg &> /dev/null; then
+    echo "Error: ffmpeg is not installed or not in PATH"
+    exit 1
+fi
+
+# Change to target directory
+cd "$target_dir" || {
+    echo "Error: Cannot access directory '$target_dir'"
+    exit 1
+}
+
+# Count total WebM files
+webm_count=$(ls *.webm 2>/dev/null | wc -l)
+
+if [ $webm_count -eq 0 ]; then
+    echo "No WebM files found in current directory"
+    exit 0
+fi
+
+echo "Found $webm_count WebM file(s) to convert"
+
+# Counter for progress
+count=0
+
+# Loop through all WebM files in current directory
+for webm_file in *.webm; do
+    # Check if file actually exists (in case glob doesn't match)
+    if [ ! -f "$webm_file" ]; then
+        continue
+    fi
+
+    # Increment counter
+    count=$((count + 1))
+
+    # Get filename without extension
+    base_name=$(basename "$webm_file" .webm)
+
+    # Output MOV filename
+    mov_file="${base_name}.mov"
+
+    echo "[$count/$webm_count] Converting: $webm_file -> $mov_file"
+
+    # Convert with ffmpeg
+    # -y: overwrite output files without asking
+    # -vcodec libvpx-vp9: Force libvpx decoder (native VP9 decoder doesn't handle alpha)
+    # -i: input file
+    # -c:v prores_ks: ProRes encoder (much better compression than qtrle)
+    # -profile:v 4444: ProRes 4444 profile (supports alpha)
+    # -pix_fmt yuva444p10le: Pixel format with alpha channel support
+    # -c:a aac: convert audio to AAC (MOV compatible, since Opus isn't supported in MOV)
+    ffmpeg -y -vcodec libvpx-vp9 -i "$webm_file" -c:v prores_ks -profile:v 4444 -pix_fmt yuva444p10le -c:a aac "$mov_file"
+
+    # Check if conversion was successful
+    if [ $? -eq 0 ]; then
+        echo "✓ Successfully converted: $mov_file"
+    else
+        echo "✗ Failed to convert: $webm_file"
+    fi
+
+    echo ""
+done
+
+echo "Conversion complete! Processed $count file(s)."