Re: [videoblogging] 3ivx compression -- Help!

Fri, 30 Dec 2005 09:21:52 -0800

You can do two pass compression without encoding once, then doing it again manually.
Just set the first pass settings, then set the second pass settings, then leave the compressor on second pass and go to compress the movie. Works the same except you don't have to go through all the steps again to get that second compression.

-Josh


On 12/30/05, 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 orH.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

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