Custom Settings MAGIX AVC/AAC MP4 Requester settings

Nozzle wrote on 3/18/2021, 11:16 AM

Some questions from a new user really regarding some of the settings of the various encoders requested:

If choosing Mainconcept AVC mode, what effect does the "Number of Slices" slider do, is it for limiting/expanding the number of CPU cores?

If choosing NV Encoder to use Nvidia GFX card to perform the encoding, why is there no way to specify a parameter for the Constant QP Mode. (The "Number of Slices" slider noted in the first question becomes greyed-out)

Here, I make the assumption that Constant QP Mode is synonymous with the constant quality mode that one can use in Handbrake (shown in the screenshot below). The objective being that the output file size is not fixed by frame size, depth and rate but would get larger if it's a fast motion clip etc such that 'quality' is constant.

I find the manual is very lacking in this regard and the help files are fairly sparse.

Nozzle

Comments

Musicvid wrote on 3/18/2021, 7:29 PM

Number of slices is irrelevant and should be left alone, because you will screw up Motion Estimation!

https://www.vegascreativesoftware.info/us/forum/what-is-number-of-slices--96709/

You should start on the Nvidia website for questions about NVENC, because that's where it, and its settings, came from.

QP and CQ are not the same thing. You should explore the ffmpeg website to learn the differences; it's in the docs. Not only are they not "synonymous," there is no quantifiable correlation between the numbers.

Vegas does not support QC encoding natively. For the most part, the Vegas docs do not go into detail about settings for third-party encoders and plugins.

Nozzle wrote on 3/19/2021, 3:17 AM

Your last sentence says it all - third-party. I wasn't aware they were third party encoders, on account of them being available within the package by default (i.e. I haven't installed them separately... that is to say unless they were already on my system).

They are titled "MAGIX AVC/ACC" though, which indicates at least some sort of ownership

Nozzle

Musicvid wrote on 3/19/2021, 7:58 AM

I wasn't aware they were third party encoders, on account of them being available within the package by default 

Vegas does not install hardware encoders by default. That is not possible.

I don't have a Nvidia card, so the Nvidia encoder is not present on my system. I do have an Intel GPU, so the Intel Quicksync encoder is the only hardware encoder available on my system. It is nothing to do with Vegas "ownership," in that Vegas does not own NVIDIA. It does have to do with a "license."