Create app.py

app.py

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+import tempfile
+
+import cv2
+import ffmpegio
+import gradio as gr
+import numpy as np
+import omegaconf
+import tensorflow as tf
+from pyprojroot.pyprojroot import here
+from huggingface_hub import hf_hub_url, cached_download
+
+from ganime.model.vqgan_clean.experimental.net2net_v3 import Net2Net
+
+IMAGE_SHAPE = (64, 128, 3)
+
+vqgan_path = cached_download(
+    hf_hub_url("Kurokabe", "VQGAN_Kimetsu-no-yaiba_Tensorflow/vqgan_kny_image_full")
+)
+gpt_path = cached_download(
+    hf_hub_url("Kurokabe", "GANime_Kimetsu-no-yaiba_Tensorflow/ganime_kny_video_full")
+)
+
+cfg = omegaconf.OmegaConf.load(here("configs/kny_video_gpt2_large_gradio.yaml"))
+cfg["model"]["first_stage_config"]["checkpoint_path"] = vqgan_path + "/checkpoint"
+cfg["model"]["transformer_config"]["checkpoint_path"] = gpt_path + "/checkpoint"
+
+model = Net2Net(**cfg["model"], trainer_config=cfg["train"], num_replicas=1)
+model.first_stage_model.build((20, *IMAGE_SHAPE))
+
+
+# def save_video(video):
+#     b, f, h, w, c = 1, 20, 500, 500, 3
+
+#     # filename = output_file.name
+#     filename = "./test_video.mp4"
+#     images = []
+#     for i in range(f):
+#         # image = video[0][i].numpy()
+#         # image = 255 * image  # Now scale by 255
+#         # image = image.astype(np.uint8)
+#         images.append(np.random.randint(0, 255, (h, w, c), dtype=np.uint8))
+
+#     ffmpegio.video.write(filename, 20, np.array(images), overwrite=True)
+#     return filename
+
+
+def save_video(video):
+    output_file = tempfile.NamedTemporaryFile(suffix=".mp4", delete=False)
+    b, f, h, w, c = video.shape
+
+    filename = output_file.name
+    video = video.numpy()
+    video = video * 255
+    video = video.astype(np.uint8)
+    ffmpegio.video.write(filename, 20, video, overwrite=True)
+    return filename
+
+
+def resize_if_necessary(image):
+    if image.shape[0] != 64 and image.shape[1] != 128:
+        image = tf.image.resize(image, (64, 128))
+    return image
+
+
+def normalize(image):
+    image = (tf.cast(image, tf.float32) / 127.5) - 1
+
+    return image
+
+
+def generate(first, last, n_frames):
+    # n_frames = 20
+    n_frames = int(n_frames)
+    first = resize_if_necessary(first)
+    last = resize_if_necessary(last)
+    first = normalize(first)
+    last = normalize(last)
+    data = {
+        "first_frame": np.expand_dims(first, axis=0),
+        "last_frame": np.expand_dims(last, axis=0),
+        "y": None,
+        "n_frames": [n_frames],
+        "remaining_frames": [list(reversed(range(n_frames)))],
+    }
+    generated = model.predict(data)
+
+    return save_video(generated)
+
+
+gr.Interface(
+    generate,
+    inputs=[
+        gr.Image(label="Upload the first image"),
+        gr.Image(label="Upload the last image"),
+        gr.Slider(
+            label="Number of frame to generate",
+            minimum=15,
+            maximum=100,
+            value=15,
+            step=1,
+        ),
+    ],
+    outputs="video",
+    title="Generate a video from the first and last frame",
+).launch(share=True)