public boolean hasTrackFormatChanged() {
        return false;
    }
Returns true iff the extracted media supports intra-stream switching of formats (e.g. resolution)
and the format has changed. It only returns true at the first call when the format has changed,
then returns false until it has changed again.
MediaPlayer/src/main/java/net/protyposis/android/mediaplayer/MediaExtractor.java