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A quick "save" (or export) of a fully recreated video file is actually indicative of a smart render - because copying data (unchanged) is quicker than re-encoding it.
HOWEVER bear in mind that many video editors work like this: when you "save", what you are actually saving is a project file which is nothing more than a set of instructions, usable only by that same program to recreate your editing commands when you reload the project. That's a small file and a trivial process - so, quick. It's not (usually) a usable video file.
In order to produce a usable video file as output, the command is often "export" (or similar terms) and it is typically here that you may choose from various output formats. I'd expect an export to take (possibly much) longer.
I haven't used your proposed app as I say, but it appears from the website (which isn't entirely clear) that it can produce outputs from various and mixed sources in various formats.
So my suggestion is to experiment with the app, but look for options to "export" as your chosen format - mp4 - directly from that app. You won't then need a further conversion, and rendering will be done just once - which (all other things equal) is optimal.
Use a short segment first (as a test) to save time, and use something like VLC to play it afterwards - VLC has a menu item that describes the file format, encoding, audio channels, and so on, so you can see technical details of what you made. Once you know how to use it, then do the whole thing. |
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