src/streamlit_app.py

import altair as alt
import numpy as np
import pandas as pd
import streamlit as st
import os

# Set your video directory here
VIDEO_FOLDER = "./src/synthda_falling_realreal/"

st.set_page_config(layout="centered")
st.title("AutoSynthDa Pose Interpolation Viewer")

st.markdown("""
# AutoSynthDa Interpolation Viewer

AutoSynthDa blends two input motion videos to **generate kinematically coherent, synthetic action videos**.

Move the slider to explore how motion changes from one input to another. 

View code and try the code on Colab at github.com/nvidia/synthda
""")

# Slider for selecting weight
weight = st.slider("Interpolation Weight", 0.0, 1.0, step=0.1)

# Label logic
if weight == 0.0:
    st.success("Showing: Input Video 1 (No interpolation)")
elif weight == 1.0:
    st.success("Showing: Input Video 2 (No interpolation)")
else:
    w2 = round(1.0 - weight, 1)
    st.info(f"Generating motion by blending {weight:.1f} of Input Video 1 and {w2:.1f} of Input Video 2")


# Construct filename based on weight (rounded to one decimal for file matching)
filename = f"videos_generated_{weight:.1f}.mp4"
video_path = os.path.join(VIDEO_FOLDER, filename)

# Show video
if os.path.exists(video_path):
    st.video(video_path)
else:
    st.error(f"No video found for weight = {weight:.1f}")