tyconvert and tyc.c pack header question

[Rick Weldon]

Hey all,

I don't know if anyone has noticed that tyconvert has the program mux rate
set to best quality by default (its hard coded in the source), and oddly
enough tyc.c for unix boxen has it set to medium quality by default (at
least the copy I snagged did). This value gets set in the mpeg pack header
that is created and written to the resultant system mpeg file that is
created when converting from ty stream to system mpeg.

My question on this is how important is it that the pack header be correct.
If you record on your TiVo at best quality (5800 kbps) and then set the
pack header to medium (2600 kbps) what effect will this have on playback? Or
vice-versa, you record at medium but tyconvert sets the pack header mux rate
to best.

Anyone know what will happen under these circumstances? Could this be a
source of audio sync problems? As in the decoder is trying to play at one
rate and its really recorded at another.

Of course you have nothing to worry about if you record on your TiVo at best
quality and use tyconvert on windowz. You may want to check this value if
you use tyc.c under cygwin or on Unix boxen prior to compilation.

Rick