Updated app.py to fix labels for dropdown and default values

app.py

@@ -197,7 +197,7 @@ with gr.Blocks() as demo:
             image_input = gr.Image(type='pil', label="Input Image", source="upload")
             image_output = gr.Image(type='pil', label="Output Image", source="upload")
         fps_image = gr.Number(0,label='FPS')
-        image_drop = gr.Dropdown(choices=models,value=models[0])
+        image_drop = gr.Dropdown(choices=models,value=models[0],label="Select the model")
         image_iou_threshold = gr.Slider(label="IOU Threshold",interactive=True, minimum=0.0, maximum=1.0, value=0.45)
         image_conf_threshold = gr.Slider(label="Confidence Threshold",interactive=True, minimum=0.0, maximum=1.0, value=0.25)
         gr.Examples(examples=examples_images,inputs=image_input,outputs=image_output)
@@ -208,8 +208,8 @@ with gr.Blocks() as demo:
             video_input = gr.Video(type='pil', label="Input Video", source="upload")
             video_output = gr.Video(type="pil", label="Output Video",format="mp4")
         fps_video = gr.Number(0,label='FPS')
-        video_drop = gr.Dropdown(choices=models,value=models[0])
-        tracking_drop = gr.Dropdown(choices=trackers,value=models[0])
+        video_drop = gr.Dropdown(choices=models,value=models[0],label = "Select the model")
+        tracking_drop = gr.Dropdown(choices=trackers,value=trackers[0], label="Select the tracking method")
         video_iou_threshold = gr.Slider(label="IOU Threshold",interactive=True, minimum=0.0, maximum=1.0, value=0.45)
         video_conf_threshold = gr.Slider(label="Confidence Threshold",interactive=True, minimum=0.0, maximum=1.0, value=0.25)
         gr.Examples(examples=examples_videos,inputs=video_input,outputs=video_output)