added gifs support

app/video.py

@@ -1,6 +1,20 @@
+import io
+
 import cv2
 import numpy as np
-from PIL import Image
+from PIL import Image, ImageSequence
+
+
+def sample_gif_frames(data: bytes, n_frames: int = 5) -> list[Image.Image]:
+    """Sample n_frames uniformly from a GIF. Returns RGB PIL images."""
+    gif = Image.open(io.BytesIO(data))
+    frames = list(ImageSequence.Iterator(gif))
+    total = len(frames)
+    if total == 0:
+        raise ValueError("GIF has no frames")
+    n = min(n_frames, total)
+    indices = np.linspace(0, total - 1, n, dtype=int)
+    return [frames[int(i)].convert("RGB") for i in indices]
 
 
 def sample_frames(video_path: str, n_frames: int = 5) -> list[Image.Image]: