Music videos - proper way to resize

[Nick Less]

I began to encode music videos recently. Before, while i was just encoding normal movies, i did everything according to the gknot guide here and it worked great. Now that i'm encoding music videos, i have no idea what resolution i should use. Say i want an average 3-4 minute video to be around 100-150 MB with audio at 192 kbps. What's the best value for Bits/(Pixel*Frame) box? And also, how do i use compresibility check - i do it and then load the file but i don't see any changes whatsoever? And also, should i use any filters with old videos or not?

[CWR03]

What's the best value for Bits/(Pixel*Frame) box?
There isn't one. It will vary for many reasons, including your own perception of quality. Your only option is to experiment and find a setting that fits your preference.

[Sharktooth]

What's the best value for Bits/(Pixel*Frame) box? ...
:readrule:, expecially:
12) How NOT to post on this forum:
...
Do not ask "what's best" because this question cannot be answered objectively. Each and everyone has their own view about what's best in a certain area. The best is what works best for you!

[jggimi]

Nick,

If the videos were designed for broadcast at 4:3, you will usually find you will need a higher bit rate than with widescreen movies. This is because there are more pixels per frame at 4:3.

I recommend compressibility testing, instead of trying to rely on a specific bpf ratio.

[Sharktooth]

... and Bits/(Pixel*Frame) is not an accurate metric for quality as it depends higly on the source compressibility.
as jggimi said, a compression test will give you much more info for obtaining the desired quality/filesize compromise.

[casperse]

So is this test the % Value done by AutoGknot ?
(Compressibility Percentage?)

What is the "min" value? I read something about minimum 50% ?

Sorry if this is a NOB Q :D

[CWR03]

The "min" value is what you can tolerate. It'll let you go a lot lower than 50%, but naturally it'll look terrible. If you want a smaller file size, don't use a percentage compressability. 2-pass encoding (only done through selecting an output size) will yield a better quality and/or a smaller filesize.