X264 >Presets "Ultra Fast", "Medium", "Slower" etc...

jmc

Active member
#1
X264 >Presets "Ultra Fast", "Medium", "Slower" etc...

MP4 Profile, X264 "Advanced Profile Options" >Presets "Ultra Fast", "Medium", "Slower" ...

Hmm, Am sure I remember being told that in VRD Pro that ALL the 9 settings do actually work.

While in VRD nonPro there are actually only 3 working levels for the preset checkbox.

While testing a 4 minute (max bitrate) dvd .mpg file I got (VRDPro 762a) Seconds
EDIT (not Fps, miss wrote)...

39-(Ultra Fast)
39-(Super Fast)
39-(Very Fast)
47-(Faster)
47-(Fast)
47-(medium)
141-(Slow)
141-(Slower)
141-(Very Slow)

Basically goes from fast to really,really slow.

BUT I do also seem to remember actually finding a fps difference dropping from "Very Slow" to "Slower".
---------------------EDIT...sometime in the past.

Confused.

Thanks,
jmc
 
Last edited:

Dan203

Senior Developer
Staff member
#2
Consumer does not have the x264 encoder. It only has the Main Concept encoder. However these advanced options are presented for all H.264 encoders and it's not really easy for us to filter them. So what we did was map them as best we could to the options available for each encoder. In the MC encoder there are only 3 levels, so we basically split them so the top 3 are the same, the middle 3 are the same, etc... Same applies to the QuickSync encoder. Except I think it has 4 options, so we had to split them a bit asymmetrically for that one.
 

jmc

Active member
#3
Consumer does not have the x264 encoder. It only has the Main Concept encoder. However these advanced options are presented for all H.264 encoders and it's not really easy for us to filter them. So what we did was map them as best we could to the options available for each encoder. In the MC encoder there are only 3 levels, so we basically split them so the top 3 are the same, the middle 3 are the same, etc... Same applies to the QuickSync encoder. Except I think it has 4 options, so we had to split them a bit asymmetrically for that one.
Ok, good to know!

I just wish that instead of 30s to 40s to 140s seconds it was 30s to *80s* to 140s.

To actually have a true "mid" level setting for X264 in Pro.

Thanks,
jmc
 

Dan203

Senior Developer
Staff member
#4
We don't actually control the settings, they're built in to x264. So whatever they do it's completely internal. Nothing we can do to speed them up.
 
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