Unfinished Part/Fragment merge

[StinutsPeanuts]

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A while ago I tried to download a couple of videos, that were going to be unavailable after a short period of time. I let it download overnight and went to sleep. When I returned the playlist was downloaded, except for 2 videos.

For each of the two (uncompleted videos) I have the same 'filestructure'. There's a part file, a Part-Frag file, a YTDL file and the complete video file (without audio).

I hoped I could just redownload the video, but it was taken down already (so there's no possible way I can get the URL back). Is there any possible way I could merge these files together to 'complete' the download?

Here's a screenshot for 1 video's output and its separate files:

[dstftw]

Video file is a completely downloaded video. m4a.part is a partially downloaded audio. Merge these, though you'll obviously have audio cut off.