1238 all clear siren m4a police department 1425267645 6b13de97193cf78166c6ba01ad0b7112 908a2adf7feb0d28de3e6188ec61f4e91f56afc196d75537c50910c505718fa9 2015 03 01 23 40 45 0 1000 mp4 iso iec 14496 3 aac stereo dataformat codec sample_rate channels bits_per_sample channelmode bitrate compression_ratio quicktime frame_rate 00000000 00000f4d 0000000000056cb3 2015 01t22 27 0500 com apple voicememos iphone os 8 1 2 itunsmpb creation_date encoding_tool undetermined language audio standard ftyp m4a hierarchy name size signature fourcc wide offset mdat moov mvhd creation_time modify_time time_scale duration preferred_rate preferred_volume matrix_a matrix_d matrix_w next_track_id creation_time_unix modify_time_unix trak tkhd flags_raw trackid volume mdia mdhd language_id playtime_seconds hdlr soun ore media component_subtype component_name minf smhd dinf dref url type number_entries data_references subatoms stbl stsd mp4a data_format reference_index audio_channels audio_bit_depth audio_sample_rate temporal_quality width resolution_x data_size frame_count pixel_depth color_table_id sample_description_table stts sample_count sample_duration time_to_sample_table stsc stsz stco udta meta mdir ilst itunes mean bit_depth controller display_scale video stts_framecount comments analyze timings