Quote:
Originally Posted by TimStannard Interesting again! Mine defaults to 9.5/6/192,000 (and it's the same whether PAL or NTSC) Using 8.0b.
I've never messed with these things cos because of all sorts of reasons and excuses but mainly because I'm too lazy to find out the implications  Where did you get your "preferred" settigs from? Can you point me to a useful (the simpler the better) source? (Sorry if I've gone OT a bit - feel free to ove to another thread) |
Not a problem Tim,
I use the same formula Edward Troxel uses (the creator of excaliber)
using AC-3 audio at 192 Kbps, the formula is:
(36096 - (((# Minutes * 60) * 192) / 1024 )) / (# Minutes * 60)
meaning that if your video is 1 hour 40 minutes (a total
of 100 minutes) you would use:
(36096 - (((100 * 60) * 192) / 1024)) / (100 * 60)=5.829
meaning you can use an average bitrate of around
5,800,000.
If you are using PCM audio, the formula is:
(36096 - (((# Minutes * 60) * 1600) / 1024)) / (# Minutes * 60)
meaning that same 100 minute video would need an
average bitrate around 4,450,000. As you can see, using
AC-3 audio will allow the bitrate to be significantly
higher.
The reason to use 8,000,000 as the max bit rate is because some older players can only handle "8" to insure that my disc play in "most" players I use it as a max. If you know your machine can handle 9.5 thats fine but just keep it in mind it might ot work in others. I would go over to
www.jetdv.com :: View topic - Vol #1, Issue #7 (June 2003) you can find more information from Edwards news letters