Hi: I used to use tcrequant within MythArchive to shrink mpeg2
recordings (from DVB-T) to fit onto dvds. Just over a year ago I found
video corruption in recordings processed on an x86_64 box under Fedora
10, but not on an i686 box under CentOS_5. At about this time tcrequant
was deprecated and no longer built by default in the transcode package.
Later there was discussion on this list about using 'vamps' to do the
same job. I persisted with this but often had failures associated with
end-of-file effects in dvdauthor.
Recently I came across what seems to be a good replacement for the
tcrequant functionality, although it isn't a direct replacement because
it needs the size of the input file as a parameter. The code is very
closely based on the newer Metakine release that was also used in vamps,
and there is a makefile that makes installation painless. I have seen
no artefacts when using recompression factors of up to 3 on an x86_64
box, and the process is very fast.
The download is here:
http://code.flexion.org/M2VRequantiser.html
and there are threads at
http://www.gossamer-threads.com/lists/mythtv/dev/367308#367308
and on the atrpms and myth-users lists.
HTH
John Pilkington
