Refactor shell scripts file names

my-scripts/shell/ffmpeg-get-video-res.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+if [ $# -ne 1 ]; then
+    echo "Usage: $0 <input_file>"
+    exit 1
+fi
+
+input_file="$1"
+
+ffprobe -v error -select_streams v:0 -show_entries stream=width,height -of csv=s=x:p=0 "$input_file"