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30 lines
2.3 KiB
Plaintext
30 lines
2.3 KiB
Plaintext
# ffmpeg -f lavfi -i sine -t 10ms test.mp3
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# fq '"aaaaa"*100, .frames[0], "bbbbb", .frames[0], "ccccc"*100 | tobytes' test.mp3 > unknown.mp3
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$ fq -d mp3 . unknown.mp3
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|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: unknown.mp3 (mp3)
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| | | error: mp3: error at position 0x365: exceeds max precent unknown bits, 73 > 50
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| | | headers[0:0]:
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0x000|61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61|aaaaaaaaaaaaaaaa| gap0: raw bits
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* |until 0x1f3.7 (500) | |
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0x1f0| ff fb 40 c0 00 00 00 00 00 00 00 00| ..@.........| frames[0:2]:
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0x200|00 00 00 00 00 00 00 00 00 49 6e 66 6f 00 00 00|.........Info...|
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* |until 0x364.7 (369) | |
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0x2a0| 62 62 62 62 62 | bbbbb | gap1: raw bits
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| | | footers[0:0]:
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0x360| 63 63 63 63 63 63 63 63 63 63 63| ccccccccccc| gap2: raw bits
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0x370|63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63|cccccccccccccccc|
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* |until 0x558.7 (end) (500) | |
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$ fq -o max_unknown=73 -d mp3 . unknown.mp3
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|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: unknown.mp3 (mp3)
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| | | headers[0:0]:
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0x000|61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61|aaaaaaaaaaaaaaaa| gap0: raw bits
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* |until 0x1f3.7 (500) | |
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0x1f0| ff fb 40 c0 00 00 00 00 00 00 00 00| ..@.........| frames[0:2]:
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0x200|00 00 00 00 00 00 00 00 00 49 6e 66 6f 00 00 00|.........Info...|
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* |until 0x364.7 (369) | |
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0x2a0| 62 62 62 62 62 | bbbbb | gap1: raw bits
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| | | footers[0:0]:
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0x360| 63 63 63 63 63 63 63 63 63 63 63| ccccccccccc| gap2: raw bits
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0x370|63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63|cccccccccccccccc|
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* |until 0x558.7 (end) (500) | |
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