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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
I'm trying to upload a longplay video to odysee.com but the website has a 16GB file size limit for uploads and doesn't support video's uploaded in the MKV file format; apparently for compatibility issues.
It is a shame that most people don't read the documentation, or stop too quickly, Adjusting quality. Note: HandBrake does not have a copy function which sounds like what you are looking for. Also, you may want to try lossless-cut if you want to cut your video.