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Originally Posted by I LOVE Little Brown Asses
I have been experimenting with compression software and settings. cleaner, sorenson, final cut compressor. Looking for the highest image quality possible with the smallest file size (aren't we all?)
Have you found any optimal settings for bit rates, key frames, and audio sampling rates for large (640X480) and small (320X240) clips? any opinions on the compression software listed above?
Thanks for your knowledge.
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Lol now you're asking for some trade secrets there my friend :P
BUT, when it comes to compression, what you're realling looking at is : How many surfers do you think will watch your video and how much Bandwidth do you want to spend on the video?
Cause, quite honestly, if you don't have a BD limit, friggin' pump up the resolution! lol
But in my experience, when working with say, a 640x480 trailer that lasts about a minute, you want the trailer to be about 6-7 megs tops.... (thats what most of my customers prefer).
Depending on your content (if its mostly black video, when you compress it, your file will be ultra small for example), you can compress it at a bitrate of 650 to 800 to get a good file size without too much of a sacrifice in quality.
Anything over a 1000 kbps is overkill for your bandwidth. The quality will look great, but the improvement in image quality over a 1000 kpbs is barely noticeable.
When it comes to 320x240, well, logically you're exporting for the slow surfers right? so you want a small size file. I usually pump them out at 1.5 to 2mb per 1 minute trailers. I prefer about 300 kpbs for the 320x240 format. It gives you a decent quality image, without sacrificing too much in quality.
and REMEMBER, 80% of a viewing experience is AUDIO. So don't be cheap on your audio quality. Keep the 44khz!! it might increase your file size by 100kb, but goddamn its worth not having to hear distracting audio distortions!
Well, hope that helped out