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import streamlit as st
import os
# Video directory
VIDEO_FOLDER = "./src/synthda_falling_realreal/"
# Set page layout
st.set_page_config(layout="wide")
# Title and description (centered)
st.markdown("""
<h1 style="text-align: center;">Project SynthDa</h1>
<h3 style="text-align: center;">SynthDa Interpolation Demo Viewer</h3>
<p style="text-align: center;">
AutoSynthDa blends two input motion videos to <strong>generate kinematically coherent, synthetic action videos</strong>.<br>
Use the slider below to explore how the system interpolates motion from one video to another.<br>
Source: <a href="https://github.com/nvidia/synthda" target="_blank">github.com/nvidia/synthda</a>
</p>
""", unsafe_allow_html=True)
# Slider instruction (centered)
st.markdown(
'<p style="text-align: center;"><strong>Use the slider to control the interpolation between Input Video 1 (left) and Input Video 2 (right).</strong></p>',
unsafe_allow_html=True
)
# Slider (starts at 0.5)
weight = st.slider("Interpolation Weight", 0.1, 0.9, 0.5, step=0.1)
# Interpolation explanation (centered)
if weight == 0.0:
interp_text = "Showing Input Video 1 (no interpolation)"
elif weight == 1.0:
interp_text = "Showing Input Video 2 (no interpolation)"
else:
w2 = round(1.0 - weight, 1)
interp_text = f"Generated motion: {weight:.1f} from Input Video 1 + {w2:.1f} from Input Video 2"
st.markdown(f'<p style="text-align: center; color: #444;"><strong>{interp_text}</strong></p>', unsafe_allow_html=True)
# Filepaths
filename_interp = f"videos_generated_{weight:.1f}.mp4"
filename_input1 = "videos_generated_0.0.mp4"
filename_input2 = "videos_generated_1.0.mp4"
video_interp = os.path.join(VIDEO_FOLDER, filename_interp)
video_input1 = os.path.join(VIDEO_FOLDER, filename_input1)
video_input2 = os.path.join(VIDEO_FOLDER, filename_input2)
exists_interp = os.path.exists(video_interp)
exists_1 = os.path.exists(video_input1)
exists_2 = os.path.exists(video_input2)
# Layout: 3 columns for video display
col1, col2, col3 = st.columns(3)
with col1:
st.markdown("<div style='text-align: center; font-weight: bold;'>Input Video 1</div>", unsafe_allow_html=True)
if exists_1:
st.video(video_input1)
else:
st.error("Video 1 not found")
with col2:
st.markdown("<div style='text-align: center; font-weight: bold;'>Interpolated Video</div>", unsafe_allow_html=True)
if exists_interp:
st.video(video_interp)
else:
st.error("Interpolated video not found")
with col3:
st.markdown("<div style='text-align: center; font-weight: bold;'>Input Video 2</div>", unsafe_allow_html=True)
if exists_2:
st.video(video_input2)
else:
st.error("Video 2 not found")
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