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app.py

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+import subprocess
+import tempfile
+import os
+import gradio as gr
+
+
+def compress_video(video_path, crf=28, max_width=1280):
+    if video_path is None:
+        return None
+
+    out_path = os.path.join(tempfile.gettempdir(), "compressed_" + os.path.basename(video_path))
+
+    cmd = [
+        "ffmpeg", "-y", "-i", video_path,
+        "-vf", f"scale='min({max_width},iw)':-2",
+        "-c:v", "libx264", "-crf", str(crf), "-preset", "slower",
+        "-c:a", "aac", "-b:a", "128k",
+        "-movflags", "+faststart",
+        out_path,
+    ]
+    subprocess.run(cmd, check=True, capture_output=True)
+    return out_path
+
+
+demo = gr.Interface(
+    fn=compress_video,
+    inputs=[
+        gr.Video(label="Input video"),
+        gr.Slider(18, 35, value=28, step=1, label="CRF (higher = smaller file, lower quality)"),
+        gr.Slider(480, 1920, value=1280, step=10, label="Max width (px)"),
+    ],
+    outputs=gr.Video(label="Compressed video"),
+    title="Video Compressor (ffmpeg)",
+    description="Server-side H.264 re-encode to shrink file size. Runs entirely on the HF Space, no local processing.",
+)
+
+if __name__ == "__main__":
+    demo.launch()

packages.txt

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+ffmpeg

requirements.txt

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+gradio==5.9.1