mirror of
https://github.com/wader/fq.git
synced 2024-12-25 14:23:18 +03:00
e77f776999
Think it makes it clearer and also less likely to collide with a field name a deocder wants to use.
866 lines
24 KiB
Plaintext
866 lines
24 KiB
Plaintext
$ fq -i -d mp3 . test.mp3
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mp3> .headers | ., tovalue, toactual, tosym, type, length?
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|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.headers[0:1]:
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|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
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0x00|49 44 33 04 00 00 00 00 00 23 54 53 53 45 00 00|ID3......#TSSE..| [0]{}: header (id3v2)
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* |until 0x2c.7 (45) | |
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[
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{
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"flags": {
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"experimental_indicator": false,
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"extended_header": false,
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"unsynchronisation": false,
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"unused": 0
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},
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"frames": [
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{
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"flags": {
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"compression": false,
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"data_length_indicator": false,
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"encryption": false,
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"file_alter_preservation": false,
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"grouping_identity": false,
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"read_only": false,
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"tag_alter_preservation": false,
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"unsync": false,
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"unused0": 0,
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"unused1": 0,
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"unused2": 0
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},
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"id": "TSSE",
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"size": 15,
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"text": "Lavf58.45.100",
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"text_encoding": "utf8"
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}
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],
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"magic": "ID3",
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"padding": "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
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"revision": 0,
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"size": 35,
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"version": 4
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}
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]
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null
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null
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"array"
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1
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mp3> .headers[0] | ., type, length?
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|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.headers[0]{}: header (id3v2)
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0x00|49 44 33 |ID3 | magic: "ID3" (valid)
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0x00| 04 | . | version: 4
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0x00| 00 | . | revision: 0
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0x00| 00 | . | flags{}:
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0x00| 00 00 00 23 | ...# | size: 35
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0x00| 54 53 53 45 00 00| TSSE..| frames[0:1]:
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0x10|00 0f 00 00 03 4c 61 76 66 35 38 2e 34 35 2e 31|.....Lavf58.45.1|
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0x20|30 30 00 |00. |
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0x20| 00 00 00 00 00 00 00 00 00 00 | .......... | padding: raw bits (all zero)
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"object"
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7
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mp3> .headers[-1000] | ., type, length?
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null
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"null"
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0
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mp3> .headers[1000] | ., type, length?
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null
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"null"
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0
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mp3> .headers[1:3] | ., type, length?
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[]
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"array"
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0
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mp3> .headers[0:-1] | ., type, length?
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[]
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"array"
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0
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mp3> .headers[-1000:2000] | ., type, length?
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[
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{
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"flags": {
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"experimental_indicator": false,
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"extended_header": false,
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"unsynchronisation": false,
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"unused": 0
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},
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"frames": [
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{
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"flags": {
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"compression": false,
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"data_length_indicator": false,
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"encryption": false,
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"file_alter_preservation": false,
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"grouping_identity": false,
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"read_only": false,
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"tag_alter_preservation": false,
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"unsync": false,
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"unused0": 0,
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"unused1": 0,
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"unused2": 0
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},
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"id": "TSSE",
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"size": 15,
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"text": "Lavf58.45.100",
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"text_encoding": "utf8"
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}
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],
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"magic": "ID3",
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"padding": "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
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"revision": 0,
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"size": 35,
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"version": 4
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}
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]
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"array"
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1
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mp3> .headers["test"] | ., type, length?
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error: expected an object with key "test" but got: array
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mp3> [.headers[]] | type, length?
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"array"
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1
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mp3> .headers | keys
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[
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0
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]
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mp3> .headers | has("a")
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error: cannot check whether array has a key: a
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mp3> .headers | has(0)
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true
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mp3> .headers | type
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"array"
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mp3> .headers | tonumber
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error: tonumber cannot be applied to: array
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mp3> .headers | tostring
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"[{\"flags\":{\"experimental_indicator\":false,\"extended_header\":false,\"unsynchronisation\":false,\"unused\":0},\"frames\":[{\"flags\":{\"compression\":false,\"data_length_indicator\":false,\"encryption\":false,\"file_alter_preservation\":false,\"grouping_identity\":false,\"read_only\":false,\"tag_alter_preservation\":false,\"unsync\":false,\"unused0\":0,\"unused1\":0,\"unused2\":0},\"id\":\"TSSE\",\"size\":15,\"text\":\"Lavf58.45.100\",\"text_encoding\":\"utf8\"}],\"magic\":\"ID3\",\"padding\":\"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\",\"revision\":0,\"size\":35,\"version\":4}]"
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mp3> .headers + ""
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error: cannot add: array ([{"flags":{"experimental_ ...]) and string ("")
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mp3> .headers + 1
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error: cannot add: array ([{"flags":{"experimental_ ...]) and number (1)
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mp3> .headers._start | ., type, length?
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0
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"number"
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0
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mp3> .headers._stop | ., type, length?
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360
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"number"
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360
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mp3> .headers._len | ., type, length?
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360
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"number"
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360
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mp3> .headers._name | ., type, length?
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"headers"
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"string"
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7
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mp3> .headers._actual | ., type, length?
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null
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"null"
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0
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mp3> .headers._sym | ., type, length?
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null
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"null"
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0
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mp3> .headers._description | ., type, length?
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null
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"null"
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0
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mp3> .headers._path | ., type, length?
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[
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"headers"
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]
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"array"
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1
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mp3> .headers._bits | ., type, length?
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|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
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0x00|49 44 33 04 00 00 00 00 00 23 54 53 53 45 00 00|ID3......#TSSE..|.: raw bits 0x0-0x2c.7 (45)
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* |until 0x2c.7 (45) | |
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"string"
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360
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mp3> .headers._bytes | ., type, length?
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|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
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0x00|49 44 33 04 00 00 00 00 00 23 54 53 53 45 00 00|ID3......#TSSE..|.: raw bits 0x0-0x2c.7 (45)
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* |until 0x2c.7 (45) | |
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"string"
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45
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mp3> .headers._error | ., type, length?
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null
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"null"
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0
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mp3> .headers._gap | ., type, length?
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false
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"boolean"
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mp3> .headers.a = 1
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error: expected an object but got: array ([{"flags":{"experimental_ ...])
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mp3> .headers[0] = 1
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{
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"footers": [],
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"frames": [
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{
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"audio_data": "\u0000\u0000\u0000\u0000\u0000",
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"crc_calculated": "827a",
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"header": {
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"bitrate": 56000,
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"channel_mode": "none",
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"channels": "mono",
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"copyright": 0,
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"emphasis": "none",
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"layer": 3,
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"mpeg_version": "1",
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"original": 0,
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"padding": "not_padded",
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"private": 0,
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"protection_absent": true,
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"sample_count": 1152,
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"sample_rate": 44100,
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"sync": 2047
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},
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"side_info": {
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"granules": [
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[
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{
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"big_values": 0,
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"blocksplit_flag": 0,
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"count1table_select": 0,
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"global_gain": 0,
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"part2_3_length": 0,
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"preflag": 0,
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"region_address1": 0,
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"region_address2": 0,
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"scalefac_compress": 0,
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"scalefac_scale": 0,
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"table_select0": 0,
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"table_select1": 0,
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"table_select2": 0
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}
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],
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[
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{
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"big_values": 0,
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"blocksplit_flag": 0,
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"count1table_select": 0,
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"global_gain": 0,
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"part2_3_length": 0,
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"preflag": 0,
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"region_address1": 0,
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"region_address2": 0,
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"scalefac_compress": 0,
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"scalefac_scale": 0,
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"table_select0": 0,
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"table_select1": 0,
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"table_select2": 0
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}
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]
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],
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"main_data_begin": 0,
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"scfsi0": 0,
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"share": 0
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},
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"tags": {
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"abr_vbr": 0,
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"audiophile_replay_gain": 0,
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"bytes": 599,
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"encoder": "Lavc58.91",
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"encoder_delay": 576,
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"encoder_padding": 1287,
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"frames": 2,
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"header": "Info",
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"lame_ath_type": 0,
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"lame_flags": 0,
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"length": 599,
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"lowpass_filter": 0,
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"misc": 0,
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"mp3_gain": 0,
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"music_crc": 25328,
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"present_flags": {
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"bytes": true,
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"frames": true,
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"quality": true,
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"toc": true,
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"unused": 0
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},
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"preset": 0,
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"quality": 0,
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"radio_replay_gain": 0,
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"replay_gain_peak": 0,
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"tag_crc": 23093,
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"tag_revision": 0,
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"toc": [
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0,
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166,
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166,
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166,
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166,
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166,
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166,
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166,
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255,
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255,
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255,
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255,
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255,
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255,
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255,
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255,
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255,
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255,
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255
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],
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"vbr_method": 0
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}
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},
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{
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"audio_data": "\u0007\ufffdÎ3\ufffd\ufffdd\ufffd\ufffd\ufffd\b\u001cX\u001f^\u001f\u0018\u001cF\u0004\u001e\ufffd\ufffd\ufffd.Z\u000f\ufffd;\u0013k\ufffd\ufffd`P\u0014\u0004\u0003\u0002\ufffdD\fNhѣl\u001fx\ufffd\u0010\u000418?\ufffd\u0007Nt\ufffd\ufffd_\ufffdr\ufffd\ufffd\ufffdw.\u000f\ufffd\ufffd\ufffd|\u0010\fJ\u0000\ufffd\ufffd \u0001\ufffd\ufffd\ufffdy\ufffd\ufffdxO\ufffd\u000f)\u0007\\\ufffd7Q`\ufffd\"\ufffdj\ufffd\u001a~\ufffdU3n/\ufffd&\ufffd\ufffd\n$&\u001b=\u0004pT{J\ufffd\u00196\u001e\ufffd&\ufffd\u007f\ufffd\u0014\ufffd\u000b\rb\u007f\ufffd\ufffd\ufffd!F9G\ufffd\t\ufffd*\u001a\n\u0005}\u001e\u0005\u0004H\ufffdg~\ufffd\ufffd\ufffd!\u0013BA/\ufffd\ufffd\ufffdI\ufffdֵ\t\u0004@\ufffd\ufffdJ\ufffd\ufffd\u0011",
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"crc_calculated": "e5b0",
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"header": {
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"bitrate": 64000,
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"channel_mode": "none",
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"channels": "mono",
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"copyright": 0,
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"emphasis": "none",
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"layer": 3,
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"mpeg_version": "1",
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"original": 1,
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"padding": "not_padded",
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"private": 0,
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"protection_absent": true,
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"sample_count": 1152,
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"sample_rate": 44100,
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"sync": 2047
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},
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"side_info": {
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"granules": [
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[
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{
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"big_values": 33,
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"block_type": "start block",
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"blocksplit_flag": 1,
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"count1table_select": 0,
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"global_gain": 151,
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"part2_3_length": 651,
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"preflag": 0,
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"scalefac_compress": 2,
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"scalefac_scale": 0,
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"subblock_gain0": 0,
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"subblock_gain1": 0,
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"subblock_gain2": 0,
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"switch_point": 0,
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"table_select0": 25,
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"table_select1": 9
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}
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],
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[
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{
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"big_values": 77,
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"block_type": "3 short windows",
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"blocksplit_flag": 1,
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"count1table_select": 0,
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"global_gain": 172,
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"part2_3_length": 769,
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"preflag": 0,
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"scalefac_compress": 9,
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"scalefac_scale": 0,
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"subblock_gain0": 0,
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"subblock_gain1": 0,
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"subblock_gain2": 0,
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"switch_point": 0,
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"table_select0": 24,
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"table_select1": 8
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}
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]
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],
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"main_data_begin": 0,
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"scfsi0": 0,
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"share": 0
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}
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},
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{
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"audio_data": "\u0011K6J\b\ufffdX\ufffd \ufffd)R\ufffd\ufffd\ufffd\ufffd\u0013\ufffd@$\ufffd\ufffd#BPV\r\u0018\u0011\u0003AްU`\ufffdDx\ufffdv\n\ufffd?\ufffdN\ufffdr\ufffd\ufffd5*ugb/\ufffdW\ufffd=Ŀ\ufffd\ufffd\u0012LAME3.100\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd",
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"crc_calculated": "61fd",
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"header": {
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"bitrate": 64000,
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"channel_mode": "none",
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"channels": "mono",
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"copyright": 0,
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"emphasis": "none",
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"layer": 3,
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"mpeg_version": "1",
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"original": 1,
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"padding": "padded",
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"private": 0,
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"protection_absent": true,
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"sample_count": 1152,
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"sample_rate": 44100,
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"sync": 2047
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},
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"side_info": {
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"granules": [
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[
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{
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"big_values": 28,
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"block_type": "end",
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"blocksplit_flag": 1,
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"count1table_select": 0,
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"global_gain": 148,
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"part2_3_length": 581,
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"preflag": 0,
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"scalefac_compress": 9,
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"scalefac_scale": 0,
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"subblock_gain0": 0,
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"subblock_gain1": 0,
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"subblock_gain2": 0,
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"switch_point": 0,
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"table_select0": 12,
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"table_select1": 6
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}
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],
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[
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{
|
|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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"scalefac_scale": 0,
|
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|
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|
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"table_select2": 0
|
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}
|
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]
|
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|
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"main_data_begin": 9,
|
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"scfsi0": 15,
|
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"share": 0
|
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}
|
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}
|
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],
|
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"headers": [
|
|
1
|
|
]
|
|
}
|
|
mp3> .headers.a |= empty
|
|
error: expected an object with key "a" but got: array
|
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mp3> .headers[0] |= empty
|
|
{
|
|
"footers": [],
|
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"frames": [
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{
|
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"audio_data": "\u0000\u0000\u0000\u0000\u0000",
|
|
"crc_calculated": "827a",
|
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"header": {
|
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"bitrate": 56000,
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"channel_mode": "none",
|
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"channels": "mono",
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|
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"padding": "not_padded",
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"sync": 2047
|
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"side_info": {
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[
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"main_data_begin": 0,
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"share": 0
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},
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"tags": {
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"encoder": "Lavc58.91",
|
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"encoder_delay": 576,
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"encoder_padding": 1287,
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"frames": 2,
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"header": "Info",
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"lame_ath_type": 0,
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"lame_flags": 0,
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"length": 599,
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"music_crc": 25328,
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"present_flags": {
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"bytes": true,
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"frames": true,
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"quality": true,
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},
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}
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},
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{
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"audio_data": "\u0007\ufffdÎ3\ufffd\ufffdd\ufffd\ufffd\ufffd\b\u001cX\u001f^\u001f\u0018\u001cF\u0004\u001e\ufffd\ufffd\ufffd.Z\u000f\ufffd;\u0013k\ufffd\ufffd`P\u0014\u0004\u0003\u0002\ufffdD\fNhѣl\u001fx\ufffd\u0010\u000418?\ufffd\u0007Nt\ufffd\ufffd_\ufffdr\ufffd\ufffd\ufffdw.\u000f\ufffd\ufffd\ufffd|\u0010\fJ\u0000\ufffd\ufffd \u0001\ufffd\ufffd\ufffdy\ufffd\ufffdxO\ufffd\u000f)\u0007\\\ufffd7Q`\ufffd\"\ufffdj\ufffd\u001a~\ufffdU3n/\ufffd&\ufffd\ufffd\n$&\u001b=\u0004pT{J\ufffd\u00196\u001e\ufffd&\ufffd\u007f\ufffd\u0014\ufffd\u000b\rb\u007f\ufffd\ufffd\ufffd!F9G\ufffd\t\ufffd*\u001a\n\u0005}\u001e\u0005\u0004H\ufffdg~\ufffd\ufffd\ufffd!\u0013BA/\ufffd\ufffd\ufffdI\ufffdֵ\t\u0004@\ufffd\ufffdJ\ufffd\ufffd\u0011",
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"crc_calculated": "e5b0",
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"header": {
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"copyright": 0,
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"emphasis": "none",
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"private": 0,
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"sample_count": 1152,
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"sync": 2047
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},
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"side_info": {
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[
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{
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}
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],
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[
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{
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}
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],
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}
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},
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{
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"audio_data": "\u0011K6J\b\ufffdX\ufffd \ufffd)R\ufffd\ufffd\ufffd\ufffd\u0013\ufffd@$\ufffd\ufffd#BPV\r\u0018\u0011\u0003AްU`\ufffdDx\ufffdv\n\ufffd?\ufffdN\ufffdr\ufffd\ufffd5*ugb/\ufffdW\ufffd=Ŀ\ufffd\ufffd\u0012LAME3.100\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd",
|
|
"crc_calculated": "61fd",
|
|
"header": {
|
|
"bitrate": 64000,
|
|
"channel_mode": "none",
|
|
"channels": "mono",
|
|
"copyright": 0,
|
|
"emphasis": "none",
|
|
"layer": 3,
|
|
"mpeg_version": "1",
|
|
"original": 1,
|
|
"padding": "padded",
|
|
"private": 0,
|
|
"protection_absent": true,
|
|
"sample_count": 1152,
|
|
"sample_rate": 44100,
|
|
"sync": 2047
|
|
},
|
|
"side_info": {
|
|
"granules": [
|
|
[
|
|
{
|
|
"big_values": 28,
|
|
"block_type": "end",
|
|
"blocksplit_flag": 1,
|
|
"count1table_select": 0,
|
|
"global_gain": 148,
|
|
"part2_3_length": 581,
|
|
"preflag": 0,
|
|
"scalefac_compress": 9,
|
|
"scalefac_scale": 0,
|
|
"subblock_gain0": 0,
|
|
"subblock_gain1": 0,
|
|
"subblock_gain2": 0,
|
|
"switch_point": 0,
|
|
"table_select0": 12,
|
|
"table_select1": 6
|
|
}
|
|
],
|
|
[
|
|
{
|
|
"big_values": 0,
|
|
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|
|
"count1table_select": 0,
|
|
"global_gain": 210,
|
|
"part2_3_length": 0,
|
|
"preflag": 1,
|
|
"region_address1": 0,
|
|
"region_address2": 0,
|
|
"scalefac_compress": 0,
|
|
"scalefac_scale": 0,
|
|
"table_select0": 0,
|
|
"table_select1": 0,
|
|
"table_select2": 0
|
|
}
|
|
]
|
|
],
|
|
"main_data_begin": 9,
|
|
"scfsi0": 15,
|
|
"share": 0
|
|
}
|
|
}
|
|
],
|
|
"headers": []
|
|
}
|
|
mp3> .headers | setpath(["a"]; 1)
|
|
error: expected an object but got: array ([{"flags":{"experimental_ ...])
|
|
mp3> .headers | setpath([0]; 1)
|
|
[
|
|
1
|
|
]
|
|
mp3> .headers | delpaths([["a"]])
|
|
error: expected an object but got: array ([{"flags":{"experimental_ ...])
|
|
mp3> .headers | delpaths([[0]])
|
|
[]
|
|
mp3> ^D
|