added auto_adjuster

app.py

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+from transformers.tools.base import launch_gradio_demo
+from audio_adjustment import AudioAdjustmentTool
+
+launch_gradio_demo(AudioAdjustmentTool)

audio_adjustment.py

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+import ffmpeg
+from transformers import Tool
+
+class AudioAdjustmentTool(Tool):
+    name = "audio_adjustment_tool"
+    description = """
+    This tool modifies audio levels for an input video.
+    Inputs are input_path, output_path, level (e.g. 0.5 or -13dB).
+    """
+    inputs = ["text", "text", "text"]
+    outputs = ["None"]
+
+    def __call__(self, input_path: str, output_path: str, level: str):
+        (
+            ffmpeg.input(input_path)
+            .output(output_path, af="volume={}".format(level))
+            .run()
+        )

requirements.txt

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+ffmpeg-python
+huggingface_hub
+transformers

tool_config.json

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+{
+  "description": "This tool modifies audio levels for an input video. Inputs are input_path, output_path, level (e.g. 0.5 or -13dB).",
+  "name": "audio_adjustment_tool",
+  "tool_class": "audio_adjustment.AudioAdjustmentTool"
+}
+