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*Details: File format summary

    
 

 

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Go to:  Summary  |  Documentation  |  Signatures |  Compression  |  Character encoding  |  Rights  |  Reference files   Properties  
 

Signatures
External signatures File extension: mp1
Internal signatures
Name MPEG 1 Audio Layer I (protected)
Description You have to check for two or more frames in a row to be sure you are dealing with an mpeg file. Frame header: MPEG-1, layer I, protected (FFF6h); Bitrate index Sampling Frequency, padding bit (1 byte), Minimum value 10h, maximum value Ebh; Minimum length of frame-3 to maximum length of frame -3; next frame header (FFF6h) repeat
Byte sequences
Position type Absolute from BOF
Offset 0
Byte order  
Value FFF6[10:EB]{29-769}FFF6[10:EB]{29-769}FFF6[10:EB]{29-769}FFF6[10:EB]{29-769}
Name MPEG 1 Audio Layer I (unprotected)
Description You have to check for two or more frames in a row to be sure you are dealing with an mpeg file. Frame header: MPEG-1, layer I, unprotected (FFF7h); Bitrate index Sampling Frequency, padding bit (1 byte), Minimum value 10h, maximum value EBh; Minimum length of frame-3 to maximum length of frame -3; next frame header (FFF7h) repeat
Byte sequences
Position type Absolute from BOF
Offset 0
Byte order  
Value FFF7[10:EB]{29-769}FFF7[10:EB]{29-769}FFF7[10:EB]{29-769}FFF7[10:EB]{29-769}
Name MPEG 2 Audio Layer I (protected)
Description You have to check for two or more frames in a row to be sure you are dealing with an mpeg file. Frame header: MPEG-2, layer I, protected (FFFEh); Bitrate index Sampling Frequency, padding bit (1 byte), Minimum value 10h, maximum value Ebh; Minimum length of frame-3 to maximum length of frame -3; next frame header (FFFEh) repeat
Byte sequences
Position type Absolute from BOF
Offset 0
Byte order  
Value FFFE[10:EB]{29-769}FFFE[10:EB]{29-769}FFFE[10:EB]{29-769}FFFE[10:EB]{29-769}
Name MPEG 2 Audio Layer I (unprotected)
Description You have to check for two or more frames in a row to be sure you are dealing with an mpeg file. Frame header: MPEG-2, layer I, unprotected (FFFFh); Bitrate index Sampling Frequency, padding bit (1 byte), Minimum value 10h, maximum value EBh; Minimum length of frame-3 to maximum length of frame -3; next frame header (FFFFh) repeat
Byte sequences
Position type Absolute from BOF
Offset 0
Byte order  
Value FFFF[10:EB]{29-769}FFFF[10:EB]{29-769}FFFF[10:EB]{29-769}FFFF[10:EB]{29-769}
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