[email protected] wrote:
On Sun, 22 Feb 2009, John Detwiler wrote:
3. Standard DVD+R have 4.7 GB capacity, and hold about half an hour of
mpg's. My finished project (including 'feature' and 'extras') will be
at least 60-90 minutes altogether.
DVD+R discs don't hold "half an hour" of MPEG video. They hold 4.7G, and
how much time that is depends entirely on the bit rate. There isn't one
standard bit rate that everybody uses. In order to fill a DVD in half an
hour you must be using a bit rate of about 20Mbps, which is almost
certainly *much* too high. Many decoders won't even operate properly when
fed such a high-rate stream; I think the spec sets a maximum of about
10Mbps. Commercially published DVDs routinely fit several hours on a
single regular-density 4.7G disc, with bit rates as low as 2Mbps. Try
reducing your bit rate by a factor of at least five.
Is it possible you're estimating based on the space consumption of
uncompressed video, or the output of some kind of camcorder that does
some other kind of compression, like DV?
I didn't know the particular bitrates, great info.
Something relevant for John, I've read that DVD-R is more like a
commercial Video DVD than DVD+R. My ancient, but high-end, JVC had
never accepted any recordable media for 7 years not because I hadn't
tried. I tried DVD-R, I was amazed - it worked. (but not all DVD-R
work in it... it got me)
I tested a family photo slideshow on many different DVD players before I
burned the final product. You might do your own tests with various
brands of +R and -R. Maybe someone here has done alot of testing
already. ;)
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