Version 1

gif2webm.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Display usage information when requested or when no arguments are provided
+usage() {
+    echo "Usage: $0 input.gif [speedup_factor]"
+    echo "  speedup_factor: Factor by which to speed up the animation (default is 1)."
+    echo "  -h or --h: Display this help message."
+    exit 1
+}
+
+# Check if help is requested
+if [[ $1 == "-h" || $1 == "--h" ]]; then
+    usage
+fi
+
+# Validate parameters
+if [[ $# -lt 1 ]]; then
+    usage
+fi
+
+input_file="$1"
+speedup="${2:-1}"  # Default to 1 if not provided
+output_file="${input_file%.gif}.webm"
+
+# Run ffmpeg command with the specified parameters
+ffmpeg -i "$input_file" -vf "scale=512:512:force_original_aspect_ratio=decrease,fps=30,setpts=${speedup}*PTS" -pix_fmt yuva420p -b:v 512k "$output_file"
+
+echo "Converted $input_file to $output_file with a speedup factor of $speedup."