tar+lzma+srep64i+precomp+Arc

[ChronoCross]

hello @rYL.
first write your code correctly:

tar+precomp+srep64i+lzma (arc is not nesessary)

example: you have a file of 10 mb

tar=10 mb
precomp=20mb
srep=12 mb
lzma=4 mb

[External compressor:precomp]
header = 0
packcmd   = precomp -intense0 -cn- {options} -o$$arcpackedfile$$.tmp  $$arcdatafile$$.tmp
unpackcmd = precomp -o$$arcdatafile$$.tmp -r $$arcpackedfile$$.tmp

[External compressor:srep]
header = 0
packcmd   = srep {options} -m3f $$arcdatafile$$.tmp $$arcpackedfile$$.tmp
unpackcmd = srep -d -s $$arcpackedfile$$.tmp $$arcdatafile$$.tmp

[External compressor:srep64]
header = 0
packcmd   = srep64 {options} -m3f $$arcdatafile$$.tmp $$arcpackedfile$$.tmp
unpackcmd = srep64 -d -s $$arcpackedfile$$.tmp $$arcdatafile$$.tmp

[External compressor:lzma64]

header = 0

packcmd   = lzma64 e lzma{:option} <stdin> <stdout>
unpackcmd = lzma64 d lzma{:option} <stdin> <stdout>

LZMA64I=COMPILED FOR INTEL optimization

this compression is good

-msrep:l256+lzma:a1:mfbt4:d200m:fb128:mc1000:lc8

have you the last update? srep_arc_2014_sept_october.7z
arc 12-sep-2014
srep 3.93 beta 30-sep-2014