feat(video): Update __init__.py with full exports

backend/blocks/video/__init__.py

@@ -1 +1,28 @@
-# Video editing blocks
+"""Video editing blocks for AutoGPT Platform.
+
+This module provides blocks for:
+- Downloading videos from URLs (YouTube, Vimeo, news sites, direct links)
+- Clipping/trimming video segments
+- Concatenating multiple videos
+- Adding text overlays
+- Adding AI-generated narration
+
+Dependencies:
+- yt-dlp: For video downloading
+- moviepy: For video editing operations
+- requests: For API calls (narration block)
+"""
+
+from .download import VideoDownloadBlock
+from .clip import VideoClipBlock
+from .concat import VideoConcatBlock
+from .text_overlay import VideoTextOverlayBlock
+from .narration import VideoNarrationBlock
+
+__all__ = [
+    "VideoDownloadBlock",
+    "VideoClipBlock",
+    "VideoConcatBlock",
+    "VideoTextOverlayBlock",
+    "VideoNarrationBlock",
+]