Update app.py (#4)

- Update app.py (f1cdcfc2c95766fedcfeaeff0c03c649569c1a30)
- Update app.py (ff98b478fbc03e108b49fc3f293940cec52ea952)


Co-authored-by: Nishith Jain <[email protected]>

app.py

@@ -26,82 +26,93 @@ transform_image = transforms.Compose(
     ]
 )
 
-
 @spaces.GPU
-def fn(vid, fps, color):
+def fn(vid, fps, color, progress=gr.Progress()):
     # Load the video using moviepy
     video = mp.VideoFileClip(vid)
-
-    # Extract audio from the video
     audio = video.audio
-
-    # Extract frames at the specified FPS
-    frames = video.iter_frames(fps=fps)
-
-    # Process each frame for background removal
-    processed_frames = []
-    for frame in frames:
+    frames = list(video.iter_frames(fps=fps))
+    total_frames = len(frames)
+    
+    processed_frames_no_bg = []
+    processed_frames_changed_bg = []
+    
+    # Create a live preview state
+    preview_no_bg = None
+    preview_with_bg = None
+    
+    for idx, frame in enumerate(progress.tqdm(frames)):
         pil_image = Image.fromarray(frame)
-        processed_image = process(pil_image, color)
-        processed_frames.append(np.array(processed_image))
-
-    # Create a new video from the processed frames
-    processed_video = mp.ImageSequenceClip(processed_frames, fps=fps)
-
-    # Add the original audio back to the processed video
-    processed_video = processed_video.set_audio(audio)
-
-    # Save the processed video to a temporary file
+        processed_image, mask = process(pil_image, color)
+        
+        processed_frames_no_bg.append(np.array(processed_image))
+        
+        background = Image.new("RGBA", pil_image.size, color + (255,))
+        composed_image = Image.composite(pil_image, background, mask)
+        processed_frames_changed_bg.append(np.array(composed_image))
+        
+        # Update preview every 10 frames or on the last frame
+        if idx % 10 == 0 or idx == total_frames - 1:
+            preview_no_bg = np.array(processed_image)
+            preview_with_bg = np.array(composed_image)
+            yield preview_no_bg, preview_with_bg, None, None
+    
+    # Create videos from processed frames
     temp_dir = "temp"
     os.makedirs(temp_dir, exist_ok=True)
-    unique_filename = str(uuid.uuid4()) + ".mp4"
-    temp_filepath = os.path.join(temp_dir, unique_filename)
+    
+    processed_video = mp.ImageSequenceClip(processed_frames_changed_bg, fps=fps)
+    processed_video = processed_video.set_audio(audio)
+    temp_filepath = os.path.join(temp_dir, f"{uuid.uuid4()}.mp4")
     processed_video.write_videofile(temp_filepath, codec="libx264")
-
-    # Return the path to the temporary file
-    return temp_filepath
-
+    
+    processed_video_no_bg = mp.ImageSequenceClip(processed_frames_no_bg, fps=fps)
+    processed_video_no_bg = processed_video_no_bg.set_audio(audio)
+    temp_filepath_no_bg = os.path.join(temp_dir, f"{uuid.uuid4()}.webm")
+    processed_video_no_bg.write_videofile(temp_filepath_no_bg, codec="libvpx")
+    
+    # Final yield with completed videos
+    yield None, None, temp_filepath_no_bg, temp_filepath
 
 def process(image, color_hex):
     image_size = image.size
     input_images = transform_image(image).unsqueeze(0).to("cuda")
-    # Prediction
     with torch.no_grad():
         preds = birefnet(input_images)[-1].sigmoid().cpu()
     pred = preds[0].squeeze()
     pred_pil = transforms.ToPILImage()(pred)
     mask = pred_pil.resize(image_size)
-
-    # Convert hex color to RGB tuple
-    color_rgb = tuple(int(color_hex[i : i + 2], 16) for i in (1, 3, 5))
-
-    # Create a background image with the chosen color
+    
+    color_rgb = tuple(int(color_hex[i:i + 2], 16) for i in (1, 3, 5))
     background = Image.new("RGBA", image_size, color_rgb + (255,))
-
-    # Composite the image onto the background using the mask
     image = Image.composite(image, background, mask)
+    
+    return image, mask
 
-    return image
-
-
-def process_file(f, color="#00FF00"):
-    name_path = f.rsplit(".", 1)[0] + ".png"
-    im = load_img(f, output_type="pil")
-    im = im.convert("RGB")
-    transparent = process(im, color)
-    transparent.save(name_path)
-    return name_path
-
+def change_color(in_video, fps_slider, color_picker):
+    return gr.update(visible=True), gr.update(visible=True), gr.update(visible=False), gr.update(visible=False)
 
 with gr.Blocks() as demo:
-    in_video = gr.Video(label="birefnet")
-    out_video = gr.Video()
-    fps_slider = gr.Slider(minimum=1, maximum=60, step=1, value=12, label="Output FPS")
-    color_picker = gr.ColorPicker(label="Background Color", value="#00FF00")
-    submit_button = gr.Button("Process Video")
-
+    with gr.Row():
+        in_video = gr.Video(label="Input Video")
+        no_bg_video = gr.Video(label="No BG Video", visible=True)
+        out_video = gr.Video(label="Output Video", visible=True)
+    
+    with gr.Row(visible=False) as preview_row:
+        preview_no_bg = gr.Image(label="Live Preview (No Background)", visible=True)
+        preview_with_bg = gr.Image(label="Live Preview (With Background)", visible=True)
+    
+    with gr.Row():
+        fps_slider = gr.Slider(minimum=1, maximum=60, step=1, value=12, label="Output FPS")
+        color_picker = gr.ColorPicker(label="Background Color", value="#00FF00")
+    
+    submit_button = gr.Button("Change Background")
+    
+    # Handle visibility changes and processing
     submit_button.click(
-        fn, inputs=[in_video, fps_slider, color_picker], outputs=out_video
+        fn=fn,
+        inputs=[in_video, fps_slider, color_picker],
+        outputs=[preview_no_bg, preview_with_bg, no_bg_video, out_video]
     )
 
 if __name__ == "__main__":