MediaMetadataRetriever is a lightweight and efficient way to do this. MediaPlayer is too heavy and could arise performance issue in high performance environment like scrolling, paging, listing, etc.
Furthermore, Error (100,0) could happen on MediaPlayer since it’s a heavy and sometimes restart needs to be done again and again.
Uri uri = Uri.parse(pathStr);
MediaMetadataRetriever mmr = new MediaMetadataRetriever();
mmr.setDataSource(AppContext.getAppContext(),uri);
String durationStr = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
int millSecond = Integer.parseInt(durationStr);