Add minimal ffprobe-based codec inspector

app.py

@@ -0,0 +1,83 @@
+import json
+import os
+import shutil
+import subprocess
+
+import gradio as gr
+
+
+def probe_video(video_path):
+    if not video_path:
+        return "Please upload a video.", None
+
+    if shutil.which("ffprobe") is None:
+        return (
+            "ffprobe not found. Add `ffmpeg` to packages.txt at the repo root.",
+            None,
+        )
+
+    try:
+        result = subprocess.run(
+            [
+                "ffprobe",
+                "-v", "quiet",
+                "-print_format", "json",
+                "-show_format",
+                "-show_streams",
+                video_path,
+            ],
+            capture_output=True,
+            text=True,
+            check=True,
+        )
+    except subprocess.CalledProcessError as e:
+        return f"ffprobe failed:\n{e.stderr}", None
+
+    info = json.loads(result.stdout)
+    fmt = info.get("format", {}) or {}
+    streams = info.get("streams", []) or []
+    v = next((s for s in streams if s.get("codec_type") == "video"), {})
+    a = next((s for s in streams if s.get("codec_type") == "audio"), {})
+
+    summary = {
+        "filename": os.path.basename(fmt.get("filename", "")),
+        "format": fmt.get("format_long_name") or fmt.get("format_name"),
+        "duration_sec": fmt.get("duration"),
+        "size_bytes": fmt.get("size"),
+        "overall_bitrate_bps": fmt.get("bit_rate"),
+        "video": {
+            "codec": v.get("codec_name"),
+            "profile": v.get("profile"),
+            "width": v.get("width"),
+            "height": v.get("height"),
+            "pix_fmt": v.get("pix_fmt"),
+            "frame_rate": v.get("r_frame_rate"),
+            "bitrate_bps": v.get("bit_rate"),
+        },
+        "audio": {
+            "codec": a.get("codec_name"),
+            "sample_rate": a.get("sample_rate"),
+            "channels": a.get("channels"),
+            "bitrate_bps": a.get("bit_rate"),
+        },
+    }
+    return json.dumps(summary, indent=2, ensure_ascii=False), video_path
+
+
+with gr.Blocks(title="OneVision Encoder Codec View") as demo:
+    gr.Markdown(
+        "# OneVision Encoder Codec View\n"
+        "Upload a video to inspect its container / codec metadata via `ffprobe`."
+    )
+    with gr.Row():
+        with gr.Column():
+            video_in = gr.Video(label="Input video", sources=["upload"])
+            run_btn = gr.Button("Probe", variant="primary")
+        with gr.Column():
+            video_out = gr.Video(label="Preview")
+            info_out = gr.Code(label="Metadata (JSON)", language="json")
+    run_btn.click(probe_video, inputs=video_in, outputs=[info_out, video_out])
+
+
+if __name__ == "__main__":
+    demo.launch()

packages.txt

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+ffmpeg