code: def test_stream_missing_audio_bitrate():
      infos = """
  Input #0, mpeg, from 'clip.mp4':
    Duration: 00:02:15.00, start: 52874.498178, bitrate: 266 kb/s
      Stream #0:0[0x1e0]: Video: ..., 25 tbr, 90k tbn, 50 tbc
      Stream #0:1[0x1c0]: Audio: mp2, 0 channels, s16p
  At least one output file must be specified"""
  
      d = FFmpegInfosParser(infos, "clip.mp4").parse()
  
      assert d
      assert len(d["inputs"][0]["streams"]) == 2
      assert d["audio_found"]
      assert d["audio_bitrate"] is None
  
imports: import os
  import subprocess
  import time
  import numpy
  import pytest
  from moviepy.audio.AudioClip import AudioClip
  from moviepy.config import FFMPEG_BINARY
  from moviepy.video.compositing.CompositeVideoClip import clips_array
  from moviepy.video.io.ffmpeg_reader import FFMPEG_VideoReader, FFmpegInfosParser, ffmpeg_parse_infos
  from moviepy.video.io.VideoFileClip import VideoFileClip
  from moviepy.video.VideoClip import BitmapClip, ColorClip
label_desc: Use image node_id 15 for calling a global function with example usage: test_stream_missing_audio_bitrate() without return types