X264 Quality differences

[weaver4]

I am encoding videos twice, one for my computer (and my WD TV Live box) and one for my ipad.

Computer: HP@L4.0 640x272 crf 22
iPad: MP@L3.1 640x272 crf 22

My question is "Is it really worth it? Is there that much difference between HP@L4.0 and MP@L3.1?"

[nurbs]

It's not worth it because
a) the iPad supports high profile, and
b) you can fit that resolution comfortably into level 3.1 even with 16 reference frames if you want to

[Blue_MiSfit]

At that resolution, CRF22 will probably never get to the MP@L3.1 bitrate limit, let alone HP.

Stick to HP@3.1. The iPad can play it just fine. Also, why the low resolution!? You should just keep full frame and do anamorphic encoding. I'm assuming DVD sources, of course..

Derek

[weaver4]

Smaller Resolution to keep the file size smaller.

My ipad is only 32Gig.

[Blue_MiSfit]

Use full resolution and increase CRF, in my experience this gives better overall results until you hit like CRF 25 or 26.

You're using a very high resolution display! It's a pity to lose 50% of your source resolution before it even touches the encoder.