On Wed, 15 Jun 2005, Trent Piepho wrote:
> On Wed, 15 Jun 2005, Steven M. Schultz wrote:
> > mpeg2enc -D 10 -G 15 -b 6400 -c --dualprime-mpeg2 -E -10 -f 8 -q 2 -K
> > tmpgenc -4 1 -2 1 -o $N.m2v
> > ----------------------
> You are specifying a bitrate of 6400 bits per SECOND. Not bits per frame.
Used mpeg2enc for long?
If you have then you know the '-b' value is in units of kbits/sec
(kbit = 1000).
Or did you forget that?
Who said anything about bits/frame? Certainly not I. There were
sizes given but not in any context of bits/frame.
Where was any mention off bits/frame given?
The numbers were long term average over the entire encoding - the
average frame SIZES were given for comparision. It's plain to see
there is very little variation no matter what parameters are used
for the encoding or if 20% of the frames are dropped or not.
The frames that are dropped are the ones that are the hardest to
encode because they contain mismatched fields (thus the expectation
that compression would be better). You knew that of course and just
forgot it.
Steven Schultz
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