Fix compression for files in root directory

- Handle __root__ special case in compression start endpoint
- Allow compression of videos not organized in date folders

backend/main.py

@@ -364,7 +364,11 @@ async def start_compression(request: CompressionRequest):
     if not 1 <= request.reduce_percentage <= 90:
         raise HTTPException(status_code=400, detail="Percentage must be between 1-90")
 
-    file_path = FOOTAGES_PATH / request.location / request.date / request.filename
+    # Handle __root__ case (files not in date subdirectories)
+    if request.date == "__root__":
+        file_path = FOOTAGES_PATH / request.location / request.filename
+    else:
+        file_path = FOOTAGES_PATH / request.location / request.date / request.filename
 
     if not file_path.exists():
         raise HTTPException(status_code=404, detail="File not found")