From 15a376416bc0c3c1e83480ed487862a772d83b52 Mon Sep 17 00:00:00 2001
From: Evan Pratten <evan@ewpratten.com>
Date: Mon, 27 Nov 2023 16:54:37 -0500
Subject: [PATCH] Add a timelapse script

---
 scripts/blink-fetch     |  1 +
 scripts/blink-timelapse | 84 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100755 scripts/blink-timelapse

diff --git a/scripts/blink-fetch b/scripts/blink-fetch
index 2eda59e..31d9312 100755
--- a/scripts/blink-fetch
+++ b/scripts/blink-fetch
@@ -1,4 +1,5 @@
 #! /usr/bin/env python3
+# Installation: pip install exif asyncio blinkpy
 import argparse
 import sys
 import logging
diff --git a/scripts/blink-timelapse b/scripts/blink-timelapse
new file mode 100755
index 0000000..a1e0c4a
--- /dev/null
+++ b/scripts/blink-timelapse
@@ -0,0 +1,84 @@
+#! /usr/bin/env python3
+import argparse
+import sys
+import logging
+import subprocess
+from datetime import datetime
+from pathlib import Path
+
+logger = logging.getLogger(__name__)
+
+
+def main() -> int:
+    # Handle program arguments
+    ap = argparse.ArgumentParser(
+        prog="blink-timelapse",
+        description="Generates timelapses from blink image captures",
+    )
+    ap.add_argument("--camera-id", help="Camera ID", default="155295")
+    ap.add_argument("--image-dir", help="Image directory", default="/tmp/blink")
+    ap.add_argument(
+        "--output-dir", help="Output directory", default="~/Videos/BlinkTimelapse"
+    )
+    ap.add_argument(
+        "--delete-frames", help="Delete frames after processing", action="store_true"
+    )
+    ap.add_argument("--frame-rate", help="Frame rate", default="5")
+    ap.add_argument(
+        "-v", "--verbose", help="Enable verbose logging", action="store_true"
+    )
+    args = ap.parse_args()
+
+    # Configure logging
+    logging.basicConfig(
+        level=logging.DEBUG if args.verbose else logging.INFO,
+        format="%(levelname)s:	%(message)s",
+    )
+
+    # Find all frames
+    frames = Path(args.image_dir).expanduser().glob(f"camera_{args.camera_id}.*.jpg")
+    frames = sorted(frames, key=lambda frame: frame.stat().st_mtime)
+    logger.info(f"Found {len(frames)} frames")
+    logger.info(
+        f"Oldest frame is from: {datetime.fromtimestamp(frames[0].stat().st_mtime)}"
+    )
+    logger.info(
+        f"Newest frame is from: {datetime.fromtimestamp(frames[-1].stat().st_mtime)}"
+    )
+    
+    # Create output directory
+    output_dir = Path(args.output_dir).expanduser()
+    output_file = output_dir / f"camera_{args.camera_id}.{datetime.now().strftime('%Y%m%d-%H%M%S')}.mp4"
+    output_dir.mkdir(parents=True, exist_ok=True)
+    
+    # Generate timelapse
+    logger.info(f"Generating timelapse: {output_file}")
+    subprocess.run(
+        [
+            "ffmpeg",
+            "-r",
+            args.frame_rate,
+            "-pattern_type",
+            "glob",
+            "-i",
+            f"{args.image_dir}/camera_{args.camera_id}.*.jpg",
+            "-c:v",
+            "libx264",
+            "-pix_fmt",
+            "yuv420p",
+            str(output_file),
+        ],
+        check=True,
+    )
+    
+    # Delete frames if needed
+    if args.delete_frames:
+        logger.info("Deleting frames")
+        for frame in frames:
+            frame.unlink()
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())