I use QT7/Tiger and I use 3ivx Dual Pass - it is the best size/quailty ratio after much experimentation. The h.264 is a little smaller with the same quality but takes much longer to compress - plus the biggest drawback is that it requires QT7 to view.
What is the bug? I haven't noticed any problems. Will --- In videoblogging@yahoogroups.com, "Steve Watkins" <[EMAIL PROTECTED]> wrote: > > The way I understand it, it creates smaller and/or better quality > files. During the first pass, it analyses the footage and gets a > chancve to workout what bitrate etc for different scenes will work > best. So when it comes to do the actual encoding on the 2nd pass, the > encoder has more info about whats coming next, so can make better use > of available bitrate. > > Many people liked 3ivx dualpass, gave better results than single pass, > but a bug made it useless with QT7/tiger. However there is a > workaround for that bug: > > http://forums.3ivx.com/index.php?showtopic=83898 > > For many people it may not be worth the extra time/hassle of going for > a 2-pass solution, it depends how much you care about > quality/filesize. Try both, and see if the results are worth it. > 2-pass should be as much of a hassle as it is with 3ivx (manually > starting 2nd pass & doing bug workaround). > > I think the qt7.0.3 ipod video export option uses 2-pass, another > reason why its so slow. > > Steve of Elbows > > --- In videoblogging@yahoogroups.com, Harold Johnson > <[EMAIL PROTECTED]> wrote: > > > > What was the point of two passes anyway? I'm unfamiliar with this. > > > > Thanks, > > Harold > > http://podcasterherald.com > > > > On 12/30/05, Michael I <[EMAIL PROTECTED]> wrote: > > > > > > Great! > > > The days of 1st pass 2nd pass are over! > > > Thanks for the info. > > > Aloha. > > > *andrew michael baron <[EMAIL PROTECTED]>* wrote: > > > > > > I have Tiger, QT7 and 3ivx 4.5.1 > > > > > > I encode to single pass constant bitrate (or single pass average > bitrate > > > when file is too big) at 6400 kbits/sec [error in software makes this > > > setting confusing, but thats what I set it at] > > > compressor quality med, high or best, depending on motion > complexity of > > > footage (I usually preset at med). > > > maxium quality Quantizer is around 90%-100% (usually 95%) > > > minimum quality quantizer is around 10% > > > frames per second is 15. > > > keyframs forced every 300 delta frames > > > half-pixel motion and four vector motion engaged. > > > > > > Audio is AAC 44.1 128kbs > > > > > > On Dec 29, 2005, at 10:35 PM, Stan Hirson, Sarah Jones wrote: > > > > > > I've been doing some tests with 3ivx and QuickTime, but have not been > > > getting� file size economy� that is any better than MPEG4 or > H.264.� > > > > > > I got the idea of usinig 3ivx from the Rocketboom tools > documentation. It > > > was very helpful and generous, but I'm afraid I need some more > guidance > > > aboput specific settings.� The whole subject of compression has > been, > > > quite frankly, something that I've been avoiding because it is so > confusing > > > with its own language and parameters that, to me, don't make much > sense.� > > > > > > I am developing a vlog that will a lot of footage of horses in > motion. I > > > am trying to keep the bit rate as low as possible to avoid > stuttering while > > > showing some sense of motion as clean as possible on DSL bandwidth. > > > > > > What I am looking for from this list is some pointers to > instruction about > > > compression that is somewhere between the Freevlog tutorials and > the 3ivx > > > documentation.� > > > > > > I'd appreciate any advice. > > > > > > Thanks > > > > > > Stan Hirson > > > hestakaup.blogspot.com > > > > > > > > > > > > > > > SPONSORED LINKS > > > > Individual<http://groups.yahoo.com/gads? t=ms&k=Individual&w1=Individual&w2=Fireant&w3=Typepad&w4=Use&c=4&s=51&.sig= IkmOF87iVVg5aOV5s-5ShQ> > > > > Fireant<http://groups.yahoo.com/gads? t=ms&k=Fireant&w1=Individual&w2=Fireant&w3=Typepad&w4=Use&c=4&s=51&.sig=H1 5DYYUHQoulfARYZSKttA> > > > > Typepad<http://groups.yahoo.com/gads? t=ms&k=Typepad&w1=Individual&w2=Fireant&w3=Typepad&w4=Use&c=4&s=51&.sig=b K2vbSrJUIzcRadddW7krQ> > > > > Use<http://groups.yahoo.com/gads? t=ms&k=Use&w1=Individual&w2=Fireant&w3=Typepad&w4=Use&c=4&s=51&.sig=RO46 LszR1YSPWsK2mib1pA> > > > ------------------------------ > > > YAHOO! 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