Use this command to read several animation sequences and write them to
pfsstreams. This command is useful with those pfs programs, which take
several pfs streams as arguments. For example, the following command
can be used to combine two animations so that there are stitched
pfsinmulti anim_a-%04d.hdr anim_b-%04d.hdr -- pfscat @1 @2
arguments @1 and @2 are replaced with named pipes for anim_a-%04d.hdr
and anim_b-%04d.hdr frames respectively. command argument is
obligatory and it must be preceded with --. There should be as many
@1, @2, .., @n arguments as there are animation sequences given as
Arguments --frames, --skip-frames and other options are
handled the same way as in pfsin program. Also pfsinmulti
recognizes the same file formats as pfsin.
Technically, pfsinmulti creates a named pipe for each pfsstream,
replaces @n arguments with the names of those pipes and deletes
the pipes when command finishes.