VideoConverter | cross platform application | Video Utils library

While writing a video converter program in c # form, I measure the convert speed with the progress bar. I am actually measuring using certain techniques, but I want to give the user how much CPU he uses with the actual values, that is, the speed of the process.

I am making a converter using the ffmepg library via c # form. I can convert all my videos to whatever format I want. But I get the following error in mpeg2, mpeg, mpeg4 formats. My code is;

I'm trying to write a converter in C # using Nreco.VideoConverter. I've never had any experience with these before. I started researching this area because I was asked at work. My problem is; I can change the bitrate value in video converter. If you have a combobox or a specific value. But, if there is any value to enter from the textbox, I cannot adapt the code accordingly. Below is the code I use. Please help.

Code is;

I'm trying to create a phonegap app that converts videos into maybe 30 or so jpeg frames.. This page converts a bigbuckbunny video into 30 frames > https://www.pewify.com/test/ (taken from https://bgrins.github.io/videoconverter.js/demo/)

It runs fine on an iPhone x running iOS 12 in mobile safari, it takes about 12-15 seconds to complete, but the same code packaged into a iOS cordova app running on the same phone will take almost 160 seconds to complete (both end results the same, but almost 10x as long), it works fine for android browsers or an android cordova app though

I'm using cordova android 7.0 and cordova ios 4.5.4 (phonegap cli-8.0.0) for the app

I've tried removing all unneeded plugins with just the bare minimum code but to no effect, it still runs just as slow

From what i understand phonegap is just using a webview similar to safari to render the app but in this case it works but much slower, on top of that the phone starts to get heated up (presumably doing some intensive CPU?)

Did read something about using WKWebview being faster in cordova instead but that messes up the app with lots of CORS and 'operation insecure" errors so have decided not to implement that for now (unless that is the solution?)

Hopefully someone can point me in the right direction as i'm not exactly sure what is the issue here as it works somewhat flawlessly in android (both chrome and phonegap) but only in iOS safari and not the phonegap app

How can i get the resulting file name after the conversion that is converted using nreco.videoconverter my requirement is to save the file path to database

I'm working on a project using python(3.6) and Django(2.0) in which i'm converting a video to mp4 if it's in any other formate.

Here's my code:

from views.py:

Hello i am trying to make the below code work... but i am getting the error at conv.convertmedia line Value of type 'String' cannot be converted to 'FFMpegInput()'

I run a batch script:

I am trying to speed up audio and video to 4 times using a C# wrapper class for ffmpeg.

Here is how it looks.