1.) Added it again. Though it is very inaccurate and only works when using encoders with bitrates.
2.) Seems like a duplicate of Parameter resets to default ?
3.) Please provide a screenshot of your exact settings. Which encoder are you using? What container format?
P.S.: One topic per issue next time please. 
Yes! Select a level only if you target hardware decoders. If you upload your video to YouTube, Vimeo or something it is not necessary.
With R2 it is possible to add support for many languages. If your language is not supported right now you can do it. Or maybe group up with other people from your country.
All you need to do is to translate this file. Keep the translation keys on the left side and translate the words on the right.
KEEP THE FILE STRUCTURE AS IT IS.
https://raw.githubusercontent.com/Vouk/voukoder/…ns/english.json
I set the min. required driver version to 418.81.
Effective with 2.0-beta3.
Ok, found the reason: Your configuration does not comply to level 4.1. It needs at least level 5. Why is that?
When not selecting any preset h264_nvenc takes "medium" as default.
h264_nvenc AVOptions:
-preset <int> E..V.... Set the encoding preset (from 0 to 11) (default medium)
default E..V....
slow E..V.... hq 2 passes
medium E..V.... hq 1 pass
fast E..V.... hp 1 pass
hp E..V....
hq E..V....
bd E..V....
ll E..V.... low latency
llhq E..V.... low latency hq
llhp E..V.... low latency hp
lossless E..V....
losslesshp E..V....A preset is a combination of (all) other single available options. So in fact if you don't specify any options, the encoder still does that internally without letting you know it. And this options by default require level 5.
I admit this is a bit confusing but I can not change this. This is happening in the NVIDIA driver software. But I changed the text of the error message:
You are not using beta2. You are using beta1. Otherwise you would not see the "Update" section.
Can you just open your eyes and take a look at the screenshots above? AC-3 is supported with mp4! If you can not see it please don't use voukoder anymore!
Daniel
Selecting "Level 1" is the problem.
Level 1:
Max. Bitrate: 64 kbit/s
Max. Resolution: 128x96 (176x144)
12 Mit/s exceeds the max. allowed bitrate. Also the resolution is too high. If you deselect "level 1" everything works.
Where is the problem? You can select this in voukoder.
Please tell me your exact encoder settings.
Implemented for x264 and x265 in 2.0-beta3.
That is intentional.
Voukoder R2 will only show containers that are suitable/working for the selected codecs. In Voukoder 1 wrong muxer / codec combination resulted in an error message.
Filter(s) is/are coming back in again.
My idea was to create something like "preset" files where every parameter is defined. When you select a preset in Voukoder it loads these parameters and set it as default (settings before will be overridden). StaxRip is a good example.
Initially you were talking about the x264 "preset" parameter, right? Sounds more like custom defined presets now. There is a huge difference between both. Custom encoder presets are planned already, but I'm currently focused on bugfixing right now.
More precise: I need to think about it if I want to have it implemented or not.
I don't want to have any hardcoded mapping of presets to a list of parameters as these presets might change in the future by the x264 devs.
Also if you save the the final configuration and load it again you would only have the single parameters selected again and there'd be no connection to the original preset anymore.
What if you first select "slow" then "fast"? Would it set the single params for "slow" and when selecting "fast" it'd overwrite them and add more from "fast?" This is creating a mess.
That's why I am not too excited about it.
Okay, understood. Will think about it. Not on high prio.
Can you elabobate on this? I don't get what you mean.
Please re-test with 2.0-beta3 and if it is still there write the exact steps on how to reproduce it.
It's fixed in 2.0-beta3.
I have tested this carefully, but can't reproduce it. Looks fine on my side.
Can anybody else reproduce this?