Create app.py

app.py

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+# app.py – Cartoon Explainer Generator (Multilingual)
+
+import os
+import uuid
+import streamlit as st
+from gtts import gTTS
+from transformers import pipeline
+from diffusers import StableDiffusionPipeline
+from PIL import Image
+from moviepy.editor import ImageClip, AudioFileClip, concatenate_videoclips, CompositeAudioClip
+
+# Setup
+st.set_page_config(page_title="🎬 Cartoon Explainer Video Generator", layout="centered")
+st.title("🎨 Cartoon Explainer Video Generator")
+
+# Caching Model Load
+@st.cache_resource(show_spinner=False)
+def load_text_gen():
+    return pipeline("text-generation", model="tiiuae/falcon-rw-1b")
+
+@st.cache_resource(show_spinner=False)
+def load_image_gen():
+    return StableDiffusionPipeline.from_pretrained("CompVis/stable-diffusion-v1-4").to("cpu")
+
+text_gen = load_text_gen()
+image_gen = load_image_gen()
+
+# UI Inputs
+topic = st.text_input("Enter a topic (e.g., Newton's Third Law)")
+lang = st.selectbox("Select Narration Language", ["English", "Telugu", "Hindi"])
+generate = st.button("🎥 Generate Cartoon Explainer")
+
+# Language Code Mapping
+lang_map = {"English": "en", "Telugu": "te", "Hindi": "hi"}
+
+if generate and topic:
+    with st.spinner("🧠 Generating story..."):
+        prompt = f"Explain the concept '{topic}' using a creative cartoon-style story for school kids."
+        story_text = text_gen(prompt, max_new_tokens=200, temperature=0.7)[0]["generated_text"]
+        sentences = story_text.strip().split(".")
+        scenes = [s.strip() for s in sentences if len(s.strip()) > 20]
+
+    st.subheader("📖 Story Summary")
+    st.write(story_text)
+
+    audio_path = f"audio_{uuid.uuid4().hex}.mp3"
+    gTTS(text=story_text, lang=lang_map[lang]).save(audio_path)
+
+    with st.spinner("🎨 Generating cartoon scenes..."):
+        image_paths = []
+        for i, scene in enumerate(scenes):
+            img_prompt = f"Cartoon-style illustration of: {scene}"
+            image = image_gen(img_prompt).images[0]
+            img_path = f"scene_{i}_{uuid.uuid4().hex}.png"
+            image.save(img_path)
+            image_paths.append(img_path)
+
+    with st.spinner("🎬 Creating video..."):
+        clips = [
+            ImageClip(path).set_duration(3).fadein(0.3).fadeout(0.3)
+            for path in image_paths
+        ]
+        final_video = concatenate_videoclips(clips, method="compose")
+
+        # Narration
+        narration = AudioFileClip(audio_path)
+
+        # Optional background music
+        music_path = "bg_music.mp3"
+        if os.path.exists(music_path):
+            music = AudioFileClip(music_path).volumex(0.1)
+            background = music.subclip(0, final_video.duration)
+            final_audio = CompositeAudioClip([narration, background])
+        else:
+            final_audio = narration
+
+        final_video = final_video.set_audio(final_audio)
+
+        output_path = f"explainer_{uuid.uuid4().hex}.mp4"
+        final_video.write_videofile(output_path, fps=24, codec="libx264", threads=2, preset="ultrafast")
+
+    st.subheader("✅ Cartoon Explainer Video")
+    st.video(output_path)
+    st.download_button("⬇️ Download Video", open(output_path, "rb").read(), file_name="cartoon_explainer.mp4")
+    st.download_button("🔊 Download Narration", open(audio_path, "rb").read(), file_name="narration.mp3")