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samtools-depad(1)	      Bioinformatics tools	       samtools-depad(1)

NAME
     samtools depad - convert padded BAM to unpadded BAM

SYNOPSIS
     samtools depad [-SsCu1] [-T ref.fa] [-o output] in.bam

DESCRIPTION
     Converts  a BAM aligned against a padded reference to a BAM aligned against
     the depadded reference.  The padded  reference  may  contain  verbatim  "*"
     bases  in	it,  but  "*" bases are also counted in the reference numbering.
     This means that a sequence base-call aligned against  a  reference  "*"  is
     considered  to  be a cigar match ("M" or "X") operator (if the base-call is
     "A", "C", "G" or "T").  After depadding the reference "*" bases are deleted
     and such aligned sequence base-calls become insertions.   Similarly  trans-
     formations apply for deletions and padding cigar operations.

OPTIONS
     -S     Ignored  for  compatibility with previous samtools versions.  Previ-
	    ously this option was required if input was in SAM format,	but  now
	    the  correct format is automatically detected by examining the first
	    few characters of input.

     -s     Output in SAM format.  The default is BAM.

     -C     Output in CRAM format.  The default is BAM.

     -u     Do not compress the output.  Applies to either BAM	or  CRAM  output
	    format.

     -1     Enable  fastest  compression level.  Only works for BAM or CRAM out-
	    put.

     -T FILE
	    Provides the padded reference file.  Note that without this the  @SQ
	    line  lengths  will  be incorrect, so for most use cases this option
	    will be considered as mandatory.

     -o FILE
	    Specifies the output filename.  By default output is sent to stdout.

     --no-PG
	    Do not add a @PG line to the header of the output file.

AUTHOR
     Written by Heng Li from the Sanger Institute with extensions by Peter  Cock
     from the James Hutton Institute.

SEE ALSO
     samtools(1)

     Samtools website: <http://www.htslib.org/>

samtools-1.23.1 		  18 March 2026 	       samtools-depad(1)

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