On Fri, Nov 07, 2003 at 11:49:03AM -0800, Steven M. Schultz wrote: > > On Fri, 7 Nov 2003, Richard Ellis wrote: > > > It's been so long since I bumped up to -G 54 for timeshifting I > > don't remember, but when I tested it the reduction was worth > > enough to convince me that it was worth staying with. I'd have > > to run a test with/without to give you actual numbers, which I > > can do if you'd like. > > After we figure out what's going awry on your system I think we > would be interested in the difference between a standard gop size > of 15 or so and the 54.
Ok, here's one real world example of the difference between GOP size 18 and GOP size 54. The captured video is 38824 mjpeg frames or about 21.5905 minutes long. The only difference between these two file sizes was changing -G 54 to -G 18. GOP 54 (-G 54) 435,188,015 bytes of m2v data GOP 18 (-G 18) 447,716,340 bytes of m2v data I calcualte that to be a 2.798% reduction in the size of the file. Not enormous percentage wise, but still, a small reduction that if one's playback unit handles it, is almost "free". I say "free" because I did not have to change quantization levels nor throw away some high frequency info to achieve the reduction. ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
