m4a logs:

	Queue start: 1 tasks, 12 thread(s).
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STATUS of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STATUS of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STATUS of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STATUS of type Gst.MessageType>
	message.type <flags GST_MESSAGE_DURATION_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_LATENCY of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STARmessage.type of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_ASYNC_DONE of type Gst.MessageType>
	message.type <flags GST_MESSAGE_NEW_CLOCK of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_DURATION_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_EOS of type Gst.MessageType>

mp3 logs:

	Queue start: 1 tasks, 12 thread(s).
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STATUS of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STATUS of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STATUS of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STATUS of type Gst.MessageType>
	message.type <flags GST_MESSAGE_DURATION_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_LATENCY of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STREAM_STARmessage.type of type Gst.MessageType>
	message.type <flags GST_MESSAGE_LATENCY of type Gst.MessageType>
	message.type <flags GST_MESSAGE_TAG of type Gst.MessageType>
	message <Gst.Message objecmessage.type amessage.type 0x7fd65bf5d2e0 (GstMessage amessage.type 0x55d16394a5a0)>
	found_tag
	append_tag title
	append_tag artist
	append_tag replaygain-album-peak
	append_tag datetime
	append_tag replaygain-album-gain
	append_tag album
	append_tag comment
	append_tag genre
	append_tag replaygain-track-gain
	append_tag replaygain-track-peak
	append_tag album-artist
	append_tag track-number
	append_tag image
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_ASYNC_DONE of type Gst.MessageType>
	message.type <flags GST_MESSAGE_NEW_CLOCK of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_STATE_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_DURATION_CHANGED of type Gst.MessageType>
	message.type <flags GST_MESSAGE_EOS of type Gst.MessageType>