old_contents: FFMPEG_PATH = '/usr/local/bin/ffmpeg'
  
  VIDEO_CODEC = 'h264' # used with ffprobe to detect whether or not we need to encode
  VIDEO_ENCODER = 'h264_omx'
  
  AUDIO_CODEC = 'aac' # used with ffprobe to detect whether or not we need to encode
  AUDIO_ENCODER = 'aac'
  
  BITRATE = '2500k'
  
  INPUT_EXTS = ['.mkv']
  OUTPUT_EXT = '.mp4'
  
new_contents: FFMPEG_PATH = '/usr/local/bin/ffmpeg'
  
  VIDEO_CODEC = 'h264' # used with ffprobe to detect whether or not we need to encode
  VIDEO_ENCODER = 'h264_omx'
  
  AUDIO_CODEC = 'aac' # used with ffprobe to detect whether or not we need to encode
  AUDIO_ENCODER = 'aac'
  
  BITRATE = '2500k'
  
  INPUT_EXTS = ['.mkv', '.mp4']
  OUTPUT_EXT = '.mp4'
  
subject: Add mp4 as input ext