Compressibility Check -> Nonsense or blessing?

[yosemite]

hi,

well, in many discussion with many ppl I spoke about the Comp. Check.
For some guys it's absolute neccesary other ppl never used it cause they think it has no use!

What do u think?

[N_F]

I'm somewhere between. I use it for every movie I make, but I could definitely live without it... If i have to chose I'll go for nonsense (but it's a close one)

[manono]

I think it's absolutely necessary.

[jonny]

It's the most important part of the encoding in my opinion, all the settings goes around it.

[TheWEF]

if you think it's a good idea to use the same settings, filters, resolution for another movie that might compress up to 5 times better or 5 times worse - go for nonsense.

[bkam]

It determines all my settings also, i.e., what filters to use, what size to resize to as well as resize method, whether to try for 1cd or do 2cds. I often start with Gknot for my first guestimate test then use Jonny's DivX5Enc to fine-tune for a good compressibility with various avs using different sizes or filters. Without it I would be at a loss to determine these things.

[stax76]

I think it's only important if filesize matters,
as far as I know file size don't grow that much
above 80% using DivX

[N_F]

Originally posted by TheWEF
if you think it's a good idea to use the same settings, filters, resolution for another movie that might compress up to 5 times better or 5 times worse - go for nonsense.

Well, you don't necesarilly need to use a comp. test to determine appropiate filters, resolution, etc...

As long as you have some experience with general video encoding, know the length of the movie and know the content (dark/light scenes, fast/low motion, etc...) you can usually make a good guess. (But of course you already know this...) And to be honest, I could never tell the difference between say 576H at ~60% and 640H at ~75% (I usually don't wear my glasses in front of the computer screen, that alone makes a bigger difference. At times I actually find myself doing comparions with AVSCompare without them, which isn't a very good idea as you may imagine... :) ).

It's a rare occasion that I find myself doing a drastic change after making a comp. test (though I guess it does happen (when I did Clerks a few weeks ago for instance which turned out to be extremely hard to compress)).

I'm not saying it's nonsence, but it's not a blessing either. It's one of many other tools in my toolbox.


Now Gordian Knot in itself, that's a blessing :)

[JohnMK]

Then I think in the spirit of the poster's intent, you should vote for 'blessing,' if you haven't already.