Any ideas how to do that, preferably in a GUI program? I’m not good at CLI or scripts.

CONTEXT

I uploaded a video in Matroska mkv format (~1gb) to Internet Archive. IA added its own converted mp4 of much lower video quality (~500mb) & that’s the only video it will stream. The mkv only available by downloading.

As I’d prefer streaming availability, I used Handbrake (on Linux) to convert the mkv to mp4 myself, hoping to make a better quality mp4 that IA would stream.

Seems successful, plays fine locally, much better quality than IA’s mp4, & smaller file size (~800mb) than original mkv.

But I can’t upload it to IA as I get an error

There is a network problem

400 Bad Data

BadContent

Uploaded content is unacceptable.

Resource>video file has improper extension, try one of these: .mpv .mkv