Create app.py

app.py

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+import gradio as gr
+import cv2
+import tempfile
+import os
+
+def process_video(video_path):
+    # Open the video file
+    cap = cv2.VideoCapture(video_path)
+    if not cap.isOpened():
+        return None
+
+    # Create a temporary file to save the processed video
+    temp_file = tempfile.NamedTemporaryFile(delete=False, suffix=".mp4")
+    output_path = temp_file.name
+
+    # Get video properties
+    frame_width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
+    frame_height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
+    fps = int(cap.get(cv2.CAP_PROP_FPS))
+
+    # Define the codec and create a VideoWriter object
+    fourcc = cv2.VideoWriter_fourcc(*'mp4v')
+    out = cv2.VideoWriter(output_path, fourcc, fps, (frame_width, frame_height), isColor=False)
+
+    # Process each frame
+    while cap.isOpened():
+        ret, frame = cap.read()
+        if not ret:
+            break
+
+        # Convert the frame to grayscale (example processing)
+        gray_frame = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
+
+        # Write the processed frame to the output video
+        out.write(gray_frame)
+
+    # Release everything
+    cap.release()
+    out.release()
+
+    return output_path
+
+def preview_video(video):
+    # Save the uploaded video to a temporary file
+    temp_file = tempfile.NamedTemporaryFile(delete=False, suffix=".mp4")
+    temp_path = temp_file.name
+    with open(temp_path, "wb") as f:
+        f.write(video)
+
+    # Process the video using OpenCV
+    processed_video_path = process_video(temp_path)
+
+    # Clean up the temporary file
+    os.unlink(temp_path)
+
+    return processed_video_path
+
+# Define the Gradio interface
+iface = gr.Interface(
+    fn=preview_video,  # Function to call
+    inputs=gr.Video(label="Upload Video"),  # Input component: Video upload
+    outputs=gr.Video(label="Preview Video"),  # Output component: Video preview
+    title="Video Preview with OpenCV",
+    description="Upload a video, and it will be processed (e.g., grayscale) and displayed."
+)
+
+# Launch the interface
+iface.launch()