FFmpeg custom command is to short!

Please change:

In line 912

$form['ffmpeg_wrapper']['custom']["ffmpeg_video_custom_command"] = array(
    '#type' => 'textfield',
    '#title' => t('Custom FFmpeg command'),
    '#description' => t('You can craft your own FFmpeg command. Please see the FFmpeg documentation for correct syntax. The command will replace <em>%in_file</em> and <em>%out_file</em> with the generated files. Please note, you can not use | or > in your commands.'),
    '#default_value' => $configuration['ffmpeg_video_custom_command'] ? $configuration['ffmpeg_video_custom_command'] : '-i %in_file %out_file',
  );

to

$form['ffmpeg_wrapper']['custom']["ffmpeg_video_custom_command"] = array(
    '#type' => 'textarea',
    '#title' => t('Custom FFmpeg command'),
    '#description' => t('You can craft your own FFmpeg command. Please see the FFmpeg documentation for correct syntax. The command will replace <em>%in_file</em> and <em>%out_file</em> with the generated files. Please note, you can not use | or > in your commands.'),
    '#default_value' => $configuration['ffmpeg_video_custom_command'] ? $configuration['ffmpeg_video_custom_command'] : '-i %in_file %out_file',
  );

in order to have much space to put a large custom ffmpeg command.

Thanks!