Re: I dream of converting this file to a real mp3
"Wesley J. Landaker" <[email protected]> Tue, 28 Oct 2008 20:50:36 -0600
| Newsgroups | gmane.org.user-groups.nmlug |
|---|---|
| Organization | icecavern.net |
| Message-ID | <[email protected]> |
Here is an a real example MP3 WAV and the corresponding MP3 after I stripped theff RIFF header: $ file tmp.wav tmp.wav: RIFF (little-endian) data, WAVE audio, MPEG Layer 3, mono 8000 Hz $ xxd -g 1 tmp.wav | head -40 0000000: 52 49 46 46 08 35 00 00 57 41 56 45 66 6d 74 20 RIFF.5..WAVEfmt 0000010: 1e 00 00 00 55 00 01 00 40 1f 00 00 e8 03 00 00 ....U...@....... 0000020: 01 00 00 00 0c 00 01 00 02 00 00 00 48 00 01 00 ............H... 0000030: 71 05 66 61 63 74 04 00 00 00 98 af 01 00 64 61 q.fact........da 0000040: 74 61 ca 34 00 00 ff e3 18 c4 00 0b 80 05 6f bf ta.4..........o. 0000050: 41 00 00 f6 ed a2 5d 96 dc 00 03 86 33 e5 1c 4c A.....].....3..L 0000060: bc e1 73 fc 9f 2e 1f f0 f7 86 39 48 7f 38 bc a4 ..s.......9H.8.. 0000070: 3e a7 1c 2e f2 05 21 f5 38 e1 79 0f ff fc a2 c3 >.....!.8.y..... 0000080: ff 00 30 b8 08 51 28 b8 58 40 1f fd fd e2 ff e3 ..0..Q(.X@...... 0000090: 18 c4 0d 10 81 7e e3 db 87 10 20 40 88 44 1d 8d .....~.... @.D.. 00000a0: c0 cf 20 5d 8f 20 60 ac 9f e2 15 c8 d0 a7 98 43 .. ]. `........C 00000b0: ff 81 8b d4 ec e7 43 94 39 00 45 7f e4 72 40 00 ......C.9.E..r@. 00000c0: 08 b0 7c b8 c0 44 54 f7 fe 00 73 b5 ff 97 ff af ..|..DT...s..... 00000d0: eb fe 37 38 bc c3 ff e3 18 c4 06 0f c0 d2 f7 21 ..78...........! 00000e0: 87 30 00 5e 82 f3 a7 89 0c 78 58 38 e1 e6 2c ee .0.^.....xX8..,. 00000f0: 78 0f 6f f1 21 01 68 61 5a 68 8e 11 39 bc c8 f3 x.o.!.haZh..9... 0000100: a2 ee ae 82 62 07 68 84 01 5f 63 be 1b 28 00 dc ....b.h.._c..(.. 0000110: 48 55 02 80 e3 bf f5 bd 7a 65 de 8f 00 40 ff e3 HU......ze...@.. 0000120: 18 c4 02 0d 00 8a e7 a9 cd 00 00 02 0f ff ac 88 ................ 0000130: 20 e0 ed 29 0e e2 99 74 f2 27 d4 83 99 98 1d 41 ..)...t.'.....A 0000140: 22 f3 b7 f8 2b 60 5a 54 d3 ff ff ff ff f5 03 44 "...+`ZT.......D 0000150: 42 8b 82 a9 62 6e 8b 9b 1a 8e 20 26 5f f0 25 ce B...bn.... &_.%. 0000160: 17 3c 16 05 62 29 ff e3 18 c4 09 0b 40 7a eb 20 .<..b)......@z. 0000170: 00 52 00 13 86 c5 67 01 01 91 51 a6 52 12 10 2e .R....g...Q.R... 0000180: b1 5f ff ff ff ff f9 4c d8 7e 44 58 a2 4a 5c d7 ._.....L.~DX.J\. 0000190: bd 69 cd 3e ee c4 ff d7 3b 54 26 12 8c 82 26 62 .i.>....;T&...&b 00001a0: 85 0b 2b 4a 9a 24 b1 44 ff ff ff ff af ed ff e3 ..+J.$.D........ 00001b0: 18 c4 17 09 80 76 eb 20 01 d2 04 0e d6 58 0a e3 .....v. .....X.. 00001c0: 12 a5 b5 a4 9d 07 86 06 bd 3f ff 3d 7d 04 40 04 .........?.=}.@. 00001d0: 0e 08 b8 f0 42 0b 5a 71 79 65 a6 52 08 aa 73 fd ....B.Zqye.R..s. 00001e0: 88 4f ac fa 6d a5 5d 81 9e 30 b6 40 85 0b 17 78 .O..m.][email protected] 00001f0: c0 c5 de e7 b9 1e ff e3 18 c4 2c 0c 01 3e eb 20 ..........,..>. 0000200: 39 84 48 7c 54 fc 33 f6 46 00 c4 ab 63 5b 42 f3 9.H|T.3.F...c[B. 0000210: 5d fb 59 2a 79 cf cf 0d b8 3c 1a d0 7b fd 84 92 ].Y*y....<..{... 0000220: 0a be a1 28 d3 30 ab ab 15 8a 02 6e 50 d6 eb 18 ...(.0.....nP... 0000230: 7a af ff fa 7f 40 05 2b e8 05 e0 d1 4a 82 ff e3 z....@.+....J... 0000240: 18 c4 37 0b 80 a6 eb 20 02 4c 20 a3 41 64 41 54 ..7.... .L .AdAT 0000250: 91 35 b5 38 21 2c 1a 6b 6a 2c db 1d e0 d9 df 51 .5.8!,.kj,.....Q 0000260: c5 ba af 90 2c 40 33 de 84 8c af d8 53 bb b3 ff ....,@3.....S... 0000270: 7a 97 bc df 94 21 23 fb 59 00 ca 29 44 d7 07 5c z....!#.Y..)D..\ $ cp tmp.wav tmp.mp3 $ khexedit tmp.wav # use your hex editor of choice (strip everything before the ff fa @ 232) $ file tmp.mp3 tmp.mp3: MPEG ADTS, layer III, v1, 96 kbps, JntStereo $ xxd -g 1 tmp.mp3 | head -10 0000000: ff fa 7f 40 05 2b e8 05 e0 d1 4a 82 ff e3 18 c4 ...@.+....J..... 0000010: 37 0b 80 a6 eb 20 02 4c 20 a3 41 64 41 54 91 35 7.... .L .AdAT.5 0000020: b5 38 21 2c 1a 6b 6a 2c db 1d e0 d9 df 51 c5 ba .8!,.kj,.....Q.. 0000030: af 90 2c 40 33 de 84 8c af d8 53 bb b3 ff 7a 97 ..,@3.....S...z. 0000040: bc df 94 21 23 fb 59 00 ca 29 44 d7 07 5c e6 3c ...!#.Y..)D..\.< -- Wesley J. Landaker <[email protected]> <xmpp:[email protected]> OpenPGP FP: 4135 2A3B 4726 ACC5 9094 0097 F0A9 8A4C 4CD6 E3D2 _______________________________________________ NMLUG mailing list [email protected] http://lists.b9.com/cgi-bin/mailman/listinfo/nmlug
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