Add video support on demo

app.py

@@ -26,7 +26,8 @@ css = """
     height: 62px;
 }
 """
-DEVICE = 'cuda' if torch.cuda.is_available() else 'cpu'
+DEVICE = 'cuda' if torch.cuda.is_available() else 'mps' if torch.backends.mps.is_available() else 'cpu'
+
 model_configs = {
     'vits': {'encoder': 'vits', 'features': 64, 'out_channels': [48, 96, 192, 384]},
     'vitb': {'encoder': 'vitb', 'features': 128, 'out_channels': [96, 192, 384, 768]},
@@ -55,48 +56,91 @@ Please refer to our [paper](https://arxiv.org/abs/2406.09414), [project page](ht
 def predict_depth(image):
     return model.infer_image(image)
 
-with gr.Blocks(css=css) as demo:
-    gr.Markdown(title)
-    gr.Markdown(description)
-    gr.Markdown("### Depth Prediction demo")
-
-    with gr.Row():
-        input_image = gr.Image(label="Input Image", type='numpy', elem_id='img-display-input')
-        depth_image_slider = ImageSlider(label="Depth Map with Slider View", elem_id='img-display-output', position=0.5)
-    submit = gr.Button(value="Compute Depth")
-    gray_depth_file = gr.File(label="Grayscale depth map", elem_id="download",)
-    raw_file = gr.File(label="16-bit raw output (can be considered as disparity)", elem_id="download",)
-
-    cmap = matplotlib.colormaps.get_cmap('Spectral_r')
-
-    def on_submit(image):
-        original_image = image.copy()
-
-        h, w = image.shape[:2]
-
-        depth = predict_depth(image[:, :, ::-1])
-
-        raw_depth = Image.fromarray(depth.astype('uint16'))
-        tmp_raw_depth = tempfile.NamedTemporaryFile(suffix='.png', delete=False)
-        raw_depth.save(tmp_raw_depth.name)
-
+def process_video(video_path):
+    input_size = 518
+    temp_output_path = tempfile.mktemp(suffix='.mp4')
+    
+    raw_video = cv2.VideoCapture(video_path)
+    frame_width = int(raw_video.get(cv2.CAP_PROP_FRAME_WIDTH))
+    frame_height = int(raw_video.get(cv2.CAP_PROP_FRAME_HEIGHT))
+    frame_rate = int(raw_video.get(cv2.CAP_PROP_FPS))
+    
+    out = cv2.VideoWriter(temp_output_path, cv2.VideoWriter_fourcc(*"mp4v"), frame_rate, (frame_width, frame_height))
+    
+    while raw_video.isOpened():
+        ret, raw_frame = raw_video.read()
+        if not ret:
+            break
+        
+        depth = model.infer_image(raw_frame, input_size)
+        
         depth = (depth - depth.min()) / (depth.max() - depth.min()) * 255.0
         depth = depth.astype(np.uint8)
-        colored_depth = (cmap(depth)[:, :, :3] * 255).astype(np.uint8)
-
-        gray_depth = Image.fromarray(depth)
-        tmp_gray_depth = tempfile.NamedTemporaryFile(suffix='.png', delete=False)
-        gray_depth.save(tmp_gray_depth.name)
-
-        return [(original_image, colored_depth), tmp_gray_depth.name, tmp_raw_depth.name]
-
-    submit.click(on_submit, inputs=[input_image], outputs=[depth_image_slider, gray_depth_file, raw_file])
-
-    example_files = os.listdir('assets/examples')
-    example_files.sort()
-    example_files = [os.path.join('assets/examples', filename) for filename in example_files]
-    examples = gr.Examples(examples=example_files, inputs=[input_image], outputs=[depth_image_slider, gray_depth_file, raw_file], fn=on_submit)
+        colored_depth = (cmap(depth)[:, :, :3] * 255)[:, :, ::-1].astype(np.uint8)
+    
+        out.write(colored_depth)
+    
+    raw_video.release()
+    out.release()
+    
+    return temp_output_path
 
+with gr.Blocks(css=css) as demo:
+    gr.Markdown(title)
+    gr.Markdown(description)
+    
+    with gr.Tabs():
+        with gr.TabItem("Image"):
+            gr.Markdown("### Depth Prediction demo")
+            with gr.Row():
+                input_image = gr.Image(label="Input Image", type='numpy', elem_id='img-display-input')
+                depth_image_slider = ImageSlider(label="Depth Map with Slider View", elem_id='img-display-output', position=0.5)
+            submit = gr.Button(value="Compute Depth")
+            gray_depth_file = gr.File(label="Grayscale depth map", elem_id="download",)
+            raw_file = gr.File(label="16-bit raw output (can be considered as disparity)", elem_id="download",)
+            
+            cmap = matplotlib.colormaps.get_cmap('Spectral_r')
+
+            def on_submit(image):
+                original_image = image.copy()
+
+                h, w = image.shape[:2]
+
+                depth = predict_depth(image[:, :, ::-1])
+
+                raw_depth = Image.fromarray(depth.astype('uint16'))
+                tmp_raw_depth = tempfile.NamedTemporaryFile(suffix='.png', delete=False)
+                raw_depth.save(tmp_raw_depth.name)
+
+                depth = (depth - depth.min()) / (depth.max() - depth.min()) * 255.0
+                depth = depth.astype(np.uint8)
+                colored_depth = (cmap(depth)[:, :, :3] * 255).astype(np.uint8)
+
+                gray_depth = Image.fromarray(depth)
+                tmp_gray_depth = tempfile.NamedTemporaryFile(suffix='.png', delete=False)
+                gray_depth.save(tmp_gray_depth.name)
+
+                return [(original_image, colored_depth), tmp_gray_depth.name, tmp_raw_depth.name]
+            
+            submit.click(on_submit, inputs=[input_image], outputs=[depth_image_slider, gray_depth_file, raw_file])
+            
+            example_files = os.listdir('assets/examples')
+            example_files.sort()
+            example_files = [os.path.join('assets/examples', filename) for filename in example_files]
+            examples = gr.Examples(examples=example_files, inputs=[input_image], outputs=[depth_image_slider, gray_depth_file, raw_file], fn=on_submit)
+        
+        with gr.TabItem("Video"):
+            gr.Markdown("### Video Depth Prediction demo")
+            input_video = gr.Video(label="Input Video")
+            output_video = gr.Video(label="Output Video")
+            process_video_btn = gr.Button(value="Process Video")
+            
+            process_video_btn.click(process_video, inputs=[input_video], outputs=[output_video])
+            
+            example_files = os.listdir('assets/examples_video')
+            example_files.sort()
+            example_files = [os.path.join('assets/examples_video', filename) for filename in example_files]
+            examples = gr.Examples(examples=example_files, inputs=[input_video], outputs=[output_video], fn=process_video)
 
 if __name__ == '__main__':
     demo.queue().launch(share=True)